Hi Flavio, I expect that you've found the solution to your problem now, but just in case, I have now published significantly improved version of the wx embedding example in CVS. Since Sourceforge can take some time to sort these things out, I have included the code here. I should also note that there has been quite a significant enhancement to the CVS version of backend_wx committed to CVS. You may wish to use this (although I don't think that the interface has changed anywhere. Details of the changes have been posted to the matplotlib-devel list, or you can see details at the top of the source file (matplotlib-devel archiving appears to be very slow). Regards Jeremy =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D= 3D=3D3D=3D3D=3D3D=3D3D """ Copyright (C) Jeremy O'Donoghue, 2003 License: This work is licensed under the PSF. A copy should be included with this source code, and is also available at http://www.python.org/psf/license.html This is a sample showing how to embed a matplotlib figure in a wxPanel. The example implements the full navigation toolbar, so you can automatica= =3D lly inherit standard matplotlib features such as the ability to zoom, pan and save figures in the supported formats. There are a few small complexities worth noting in the example: 1) By default, a wxFrame can contain a toolbar (added with SetToolBar()) but this is at the top of the frame. Matplotlib default is to put the controls at the bottom of the frame, so you have to manage the toolbar yourself. I have done this by putting the figure and toolbar into a sizer, but this means that you need to override GetToolBar for your wxFrame so that the figure manager can find the toolbar. 2) I have implemented a figure manager to look after the plots and axes. If you don't want a toolbar, it is simpler to add the figure directly and not worry. However, the figure manager looks after clipping of the figure contents, so you will need it if you want to navigate 3) There is a bug in the way in which my copy of wxPython calculates toolbar width on Win32, so there is a tricky line to ensure that the width of the toolbat is the same as the width of the figure. 4) Depending on the parameters you pass to the sizer, you can make the figure resizable or not. """ import matplotlib matplotlib.use('WX') from matplotlib.backends import Figure, Toolbar, FigureManager from matplotlib.axes import Subplot import Numeric as numpy from wxPython.wx import * class PlotFigure(wxFrame): def __init__(self): wxFrame.__init__(self, None, -1, "Test embedded wxFigure") self.fig =3D3D Figure(self, -1, (5,4), 75) self.toolbar =3D3D Toolbar(self.fig) self.toolbar.Realize() # On Windows, default frame size behaviour is incorrect # you don't need this under Linux tw, th =3D3D self.toolbar.GetSizeTuple() fw, fh =3D3D self.fig.GetSizeTuple() self.toolbar.SetSize(wxSize(fw, th)) # Create a figure manager to manage things self.figmgr =3D3D FigureManager(self.fig, 1, self) # Now put all into a sizer sizer =3D3D wxBoxSizer(wxVERTICAL) # This way of adding to sizer prevents resizing #sizer.Add(self.fig, 0, wxLEFT|wxTOP) # This way of adding to sizer allows resizing sizer.Add(self.fig, 1, wxLEFT|wxTOP|wxGROW) # Best to allow the toolbar to resize! sizer.Add(self.toolbar, 0, wxGROW) self.SetSizer(sizer) self.Fit() def plot_data(self): # Use ths line if using a toolbar a =3D3D self.figmgr.add_subplot(111) # Or this one if there is no toolbar #a =3D3D Subplot(self.fig, 111) t =3D3D numpy.arange(0.0,3.0,0.01) s =3D3D numpy.sin(2*numpy.pi*t) c =3D3D numpy.cos(2*numpy.pi*t) a.plot(t,s) a.plot(t,c) self.toolbar.update() def GetToolBar(self): # You will need to override GetToolBar if you are using an # unmanaged toolbar in your frame return self.toolbar if __name__ =3D3D=3D3D '__main__': app =3D3D wxPySimpleApp() frame =3D3D PlotFigure() frame.plot_data() frame.Show() app.MainLoop()
Hi,
I'm using Mac OS X 10.3 with fink. I've used matlabplot before, but
since I've apt-get'd and upgrade'd-all, I've been getting the errors:
/sw/lib/python2.4/site-packages/matplotlib/font_manager.py:425:
UserWarning: Could not open font file /Library/Fonts/NISC18030.ttf
warnings.warn("Could not open font file %s"%fpath)
** (bubba.py:15740): WARNING **: `GtkTextSearchFlags' is not an enum
type
** (bubba.py:15740): WARNING **: Cannot open font file for font
Helvetica 10
** (bubba.py:15740): WARNING **: Cannot open fallback font, nothing to
do
Then, matplotlib stops. I've reinstalled gtk, python, and matplotlib,
but simply reinstalling does not seem to work. Does anyone know what's
going on?
-Jon
Hello everyone,
when using errorbar() it is possible to change the attributes (linethickness
etc.) with setp(). This works really well.
But on the otherhand when you try to set the attributes within the
errorbar()-command it will not work - see the exapmle below.
Finding this a bit disturbing I took a look at "axes.py" where errorbar() is
placed. I found out that the drawing of those bars and caps (also
just beeing lines) are added to the plot without the "**kwargs".
Credulously and optimistic I just added it there and - of course - got an
errormessage. So I made a copy of kwargs in the method errorbar() and poped
out all the keywords which could be problematic (I only found out 'marker',
'ls' and 'linestyle') by
kwargs_bars = kwargs.copy() # make copy of kwargs (not only a
# pointer)
if kwargs.has_key('marker'): # Is the 'marker' keyword given in
# kwargs?
marker=kwargs_bars.pop('marker')# filter this entry out (would raise
# error "duplicate keyword argument")
if kwargs.has_key('ls'): # Is the 'ls' keyword given in kwargs?
marker=kwargs_bars.pop('ls') # filter this entry out (vlines, hlines
# would not be drawn)
if kwargs.has_key('linestyle'): # Is the 'linestyle' keyword given
marker=kwargs_bars.pop('linestyle') # in kwargs?
and then added **kwargs_bars to the following vlines, hlines and plots:
barlines.extend( self.hlines(y, x, left,**kwargs_bars) )
barlines.extend( self.hlines(y, x, right,**kwargs_bars) )
caplines.extend( self.plot(left, y, '|', ms=2*capsize,**kwargs_bars) )
caplines.extend( self.plot(right, y, '|', ms=2*capsize,**kwargs_bars) )
and also for yerr.
Now the example below worked fine.
I'm now thinking of two things - the second one of them beeing a
possible drawback.
i) I'm not sure if other keywords should also be poped out. I can't imagine
any further problems - but we all know that this means completely
nothing in the wide field of possible errormessages ;-)
ii) Like before you have the ability to set the color of the cap- and
barlines seperatly from the color of the line connecting the points.
The problem mentioned above (you can't change the thickness of the caps and
bars from the errorbar()-command) still persists for 'linestyle'. Therefor
I'm not sure if the confusion existing before is cleared away. Propably not.
Just imagine a user: "I would like to change the style of the bars and caps
to '-.'. Why do I have to use setp() instead of giving it to errorbar()?"
But I hope that the changes in axes.py are helpful.
Bye,
Martin
PS: Would it be more agreeable if I try to create a patch ruther
then sending the codesnippets? If yes: could anyone give me a hint on how
to find information about patches (how t omake them, how to apply
them)?
Thanks!
#-------------------------------------------------------------------------------
"""This little program shows that it makes an enormous difference
where the properties of the errorbar()-command are set.
a) within the command errorbar(...)
b) seperately with an setp() command
"""
from pylab import *
N=20
x = 1.0*arange(N)/(N-1)
yerrors = .02*rand(N) # errors in y
xerrors = .02*rand(N) # errors in x
y = exp(-x) # plain curve
figure(1)
subplot(121)
print ("Left : If the features are set with setp() everything works out
fine.")
error_plot_1 = errorbar(x,y, yerr=yerrors,xerr=xerrors,
ls='none',ecolor='r')
setp(error_plot_1,linewidth=3,markeredgewidth=2)
subplot(122)
print ("Right : But if one uses the command errorbars() itself not.")
error_plot = errorbar(x,y, yerr=yerrors,xerr=xerrors,
ls='none',ecolor='r',
linewidth=3,markeredgewidth=2)
show()
--
GMX DSL = Maximale Leistung zum minimalen Preis!
2000 MB nur 2,99, Flatrate ab 4,99 Euro/Monat: http://www.gmx.net/de/go/dsl
Hi matplotlib users, I'm looking for a way to remove and/or control the properties (color, thickness,...) of the lines (axis) around the graph. I spent already quite some time to search a solution. I have found only o= ne comment on these lines in the multiline-plot wiki: "It's on our list of things to change the way these axes lines are draw so that you can remove it, but it isn't done yet" Is this done now? Is there even a dirty trick to at least remove them? Thanks, David
Hi all, I have installed two different version of python One is in /usr/bin/python and the other is in /usr/local/bin I have installed matplotlib using /usr/bin/python setup.py build /usr/bin/python setup.py install It works fine. However if I try to install matplotlib using /usr/local/bin/python setup.py build it fails due to missing pygtk. How can I resolve this problem ? Can I add something to /usr/local/bin/python setup.py build and /usr/local/bin/python setup.py install ? Nils =20
>>>>> "Nils" == Nils Wagner <nw...@me...> writes: Nils> Can I add something to Nils> /usr/local/bin/python setup.py build Nils> and Nils> /usr/local/bin/python setup.py install ? You have a few choices: * don't enable the GTK backend for your matplotlib install in /usr/local/bin/python -- edit setup.py and set BUILD_GTK=0 * install pygtk and everything else you want in the /usr/local/bin/python before installing mpl there * update your PYTHONPATH and PKG_CONFIG_PATH so both can see the same pygtk install. This will only work if both pythons have the same major version number, eg both are 2.3 or both are 2.4. * use a subject heading when posting JDH
I've been having trouble gettin histograms to work on arrays. This is no= t the particular case that I've had, but illustrates the general error.=20 Wondering if anyone knew what I was doing wrong? Thanks. >>> from pylab import * >>> from numpy import * >>> x=3Dones([2,10]) >>> x array([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]]) >>> hist(x[0]) Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 1857, in hist ret =3D gca().hist(*args, **kwargs) File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 1676, in hist n,bins =3D matplotlib.mlab.hist(x, bins, normed) File "/usr/lib/python2.4/site-packages/matplotlib/mlab.py", line 617, i= n hist ymin -=3D 0.5 TypeError: unsupported operand type(s) for -=3D: 'str' and 'float'
I've finally figured out why I've been having trouble creating histograms= . As it turns out, if you pass to hist() a datatype that is numpy.ndarray instead of a Numeric array, you get the following error. Check this out: >>> import numpy >>> import Numeric >>> from pylab import * >>> y=3DNumeric.array([1,2]) >>> hist(y) # This works no problem >>> x=3Dnumpy.array([1,2]) >>> hist(x) Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line 1857, in hist ret =3D gca().hist(*args, **kwargs) File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 1676, in hist n,bins =3D matplotlib.mlab.hist(x, bins, normed) File "/usr/lib/python2.4/site-packages/matplotlib/mlab.py", line 621, i= n hist dy =3D (ymax-ymin)/bins TypeError: unsupported operand type(s) for -: 'str' and 'str' I'm not exactly sure why this is true, but I've empirically found this ou= t to be the case. If anyone knows why, I'd sure love to know. Thanks, Finny Kuruvilla
>>>>> "Finny" == Finny Kuruvilla <kur...@mo...> writes: Finny> I'm not exactly sure why this is true, but I've empirically Finny> found this out to be the case. If anyone knows why, I'd Finny> sure love to know. matplotlib will work with numpy, numarray *or* Numeric, but it doesn't work with all three at the same time. You need to set your "numerix" setting in your config file to agree with which package you are using (and then restart python). An example rc file is at http://matplotlib.sf.net/matplotlibrc We provide a numerix compatibility layer which you can consider using so you won't get into these troubles. This essentially guarantees that the array object you are using is the same as the one you have set in your configuration file import matplotlib.numerix as nx x=nx.array([1,2]) hist(x) You can inspect the value of the numerix parameter with import matplotlib print matplotlib.rcParams['numerix'] rcParams is a dictionary mapping a configuration parameter to a value. Most of these can be changed dynamically at runtime, but two, the 'numerix' and the 'backend' setting must be changed before importing the numerix module and pylab, respectively, because these trigger imports that are not easily undone. Most people just set these once in their rc file and are done with it, but you can set them in a script with from matplotlib import rcParams rcParams['numerix] = 'numpy' rcParams['backend'] = 'PS' # it is now safe to import numerix and pylab import matplotlib.numerix as nx # you'll be using numpy import pylab # with the postscript backend as default JDH JDH
Hi,
I'm trying to generate a contour plot with logarithmic axes. I'm
generating data on a grid defined by logspaces:
x_range = logspace(log10(xstart),log10(xend),num=25)
y_range = logspace(log10(ystart),log10(yend),num=25)
Then, to generate the plot I do the following:
[X,Y]=pylab.meshgrid(log10(x_range),log10(y_range))
pylab.contourf(X,Y,transpose(data))
And to obtain nicer tick mark labels, this dirty way:
xmajorForm = pylab.FormatStrFormatter('10e%.1f')
ax.xaxis.set_major_formatter(xmajorForm)
ymajorForm = pylab.FormatStrFormatter('10e%.1f')
ax.yaxis.set_major_formatter(ymajorForm)
Are there better ways to (1) set the x and y xis scaling to
logarithmic, and to (2) obtain nicely formatted tick mark labels ?
I tried playing around with the x and y axis data and with LogLocator
and LogFormatter but it doesn't seem to do the job.
Pieter
Hi, All, I am doing some plotting and I want to do some format change to my tick. Here is what I want: Origin ticks: 0.0 1.0 2.0 3.0 4.0 5.0 Ticks I want: 0.0mV 1000mv 2000mV 3000mV 4000mV 5000mV Just showing the ticks in an easier-read way. Because I don't want so see anything like 1.2345e-2, I want to see 12.345mV. Thanks very much.. CONFIDENTIALITY NOTE: This message is intended only for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this notice is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone at (86-10)8225 5779-361. _____________________________________________________________________________ Scanned by IBM Email Security Management Services powered by MessageLabs. For more information please visit http://www.ers.ibm.com _____________________________________________________________________________
Hello at all.
I need to do a real time plot where on the frame i have this like limit
line:
import math
dati =3D []
for freq in range(int(freqiniziale), (int(freqfinale )+ 1)):
forza =3D float(massa) * ((2*math.pi*freq)**2)/10
dati.append(forza)
ax1 =3D subplot(111)
plot(dati)
xlabel('Frequenza HZ')
ylabel('Deg')
title('Grafico Calibrazione')
ax2 =3D twinx()
plot([0.1,0.2,0.3],'r-')
ylabel('Forza')
ax2.yaxis.tick_right()
#dlg =3D wx.FileDialog(self, "Choose a file", ".", "", "*.*",
wx.SAVE)
#try:
# if dlg.ShowModal() =3D=3D wx.ID_OK:
# filename =3D dlg.GetPath()
# savefig(filename+'.pdf')
#finally:
# dlg.Destroy()
show()
with this i have the grap on the screen but i have to update every time
that i receive others data coming from two instruments (10 seconds),
how i can update the grap?
Regards
Luca=0A=0A=0A------------------------------------------------------=0ASco=
pri MOTOROLA K1, la nuova icona di design Motorola.Clicca e vinci !=0Ahtt=
p://click.libero.it/motorola16nov=0A
Hi, I'm a newbie trying to install matplotlib (0.87) on Linux (2.6.11,FC4). I have Python 2.4, wxPython 2.8.3 and all required libraries for matplotlib (freetype, libpng, zlib). I'm tring to use wxAgg as the backend, and there is a build error for matplotlib when it tries to compile the wxagg files.. I've attached the resulting output from the build. It will be great help if anyone can give throw some light on how to fix this build error. Thanks Praveen __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Praveen Gopalakrishnan wrote: > Hi, I'm a newbie trying to install matplotlib (0.87) on Linux > (2.6.11,FC4). I have Python 2.4, wxPython 2.8.3 and all required > libraries for matplotlib (freetype, libpng, zlib). I'm tring to use > wxAgg as the backend, and there is a build error for matplotlib when > it tries to compile the wxagg files.. I'm pretty sure that 0.87 will not build with wxPython2.8.* I think it's been fixed in SVN, but not in the 0.90 release either. You can: switch to wxPython 2.6 or search the archives of this list for the fix and patch your source (search for my name, that may help) or Use the SVN version of MPL. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chr...@no...
On May 7, 2007, at 11:21 AM, Christopher Barker wrote: > Praveen Gopalakrishnan wrote: >> Hi, I'm a newbie trying to install matplotlib (0.87) on Linux >> (2.6.11,FC4). I have Python 2.4, wxPython 2.8.3 and all required >> libraries for matplotlib (freetype, libpng, zlib). I'm tring to use >> wxAgg as the backend, and there is a build error for matplotlib when >> it tries to compile the wxagg files.. > > I'm pretty sure that 0.87 will not build with wxPython2.8.* I think > it's > been fixed in SVN, but not in the 0.90 release either. Chris is correct, you cannot build 0.87's _wxagg module using wxPython 2.8. However, you can edit setup.py and change the value of the BUILD_WXAGG variable from 'auto' to 0. This will inhibit the compilation of the module and everything should work fine. Ken
Hello everyone! I'm seeking help with real-time plotting using Python and MatPlotLib. I've encoutered several problems so far: 1. There is no function to just add a point to the existing curve, so each time the data is updated all the curve has to be redrawn. This is not a clean solution for the real-time plotting. 2. I'm trying to use threads in Python in order to be able to get the data and draw the curve at the same time. Sometimes it's working, and sometimes the graphics rendering just hangs. Moreover, if I try to use the Timer class for the plotting thread, it is invoked only one time. I wonder, if my threads are stirring with a graphical library ones. If there is no special thread handling with Tk, I'll investigate my code again. I'll appreciate any help. Thank you. Dendron.
Hi,
=20
I am new to matplotlib.
=20
I am trying to save a sample graph I created as a jpeg image. It seems for=
m the documentation that the type of image can be determined by the extensi=
on that is used. Commands seem simple enough.
=20
ind =3D arange(len(importance_IncNodePurity)) # the x locations for the gro=
ups
width =3D 0.35 # the width of the bars
p1 =3D bar(ind, importance_IncNodePurity, width, color=3D'r')
ylabel('Importance')
title('Importance Node Purity')
xticks(ind+width, importance_row_names)
psave=3D"c:\eclipse\dafaf.jpg"
savefig(psave)
show()
=20
=20
However, I seem to get the following errors and I have no idea what they me=
an.
=20
Traceback (most recent call last):
File "C:\Documents and Settings\dmontgomery\workspace\Test\src\create_table=
.py", line 259, in <module>
savefig(psave)
File "C:\Python25\Lib\site-packages\matplotlib\pylab.py", line 796, in save=
fig
return fig.savefig(*args, **kwargs)
File "C:\Python25\Lib\site-packages\matplotlib\figure.py", line 759, in sav=
efig
self.canvas.print_figure(*args, **kwargs)
File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_tkagg.py", =
line 188, in print_figure
**kwargs)
File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_agg.py", li=
ne 493, in print_figure
raise IOError('Do not know know to handle extension *%s' % ext)
IOError: Do not know know to handle extension *.jpg
=20
Thanks,
=20
David=
On Monday 17 September 2007 01:12:46 pm David Montgomery wrote:
> I am trying to save a sample graph I created as a jpeg image. It seems
> form the documentation that the type of image can be determined by the
> extension that is used. Commands seem simple enough.
>
> ind = arange(len(importance_IncNodePurity)) # the x locations for the
> groups width = 0.35 # the width of the bars
> p1 = bar(ind, importance_IncNodePurity, width, color='r')
> ylabel('Importance')
> title('Importance Node Purity')
> xticks(ind+width, importance_row_names)
> psave="c:\eclipse\dafaf.jpg"
> savefig(psave)
> show()
>
>
> However, I seem to get the following errors and I have no idea what they
> mean.
[...]
> File "C:\Python25\Lib\site-packages\matplotlib\backends\backend_agg.py",
> line 493, in print_figure raise IOError('Do not know know to handle
> extension *%s' % ext)
> IOError: Do not know know to handle extension *.jpg
It means the Agg library, which we use for rendering, does not know how to
create jpegs. Can you work with png's instead? They are a much better format
for plots and line art than jpegs.
Darren
Dear all, is there the possiblity in matplolib to buind dendograms ? I've searched a bit bout found no examples of it it seems not implemented is there a plan for doing it ? Thanks in advance for all reply Giorgio
Hi guys and girls, Quick question regarding matplotlib's svg backend... I've embeded pyhton into c++ and Qt's (4.3.3) svg support is having some problems with .svg files created by matplotlib. Text isn't showing up. Firefox displays the same .svg file correctly though... The problem: It seems some text stuff is stored in a section called defs at the end of the file with stuff linking to this earlier in the file. Qt doesn't like that and only displays the normal plot stuff (lines, etc.) but not the labels and other text. More exact: <use xlink:href="#c_7" ..... references <path id="c_7" d="M10.6875 ..... at the end of the file. When I simply cut and paste the defs section to the beginning of the file it solves the problem. What does the svg standard say about this? I assume Qt's implementation is defect... Has anybody else encountered this problem? I'll send an e-mail to Qt too and ask them about it. Hope you're all having a nice day. Regards, cputter
Hi there, Just an update regarding the svg problem I was having: I simply went back to 0.90 and that's working now. Would still be nice to know if the svg output from matplotlib complies with the standard or whether it's Qt that's messing things up. Merry x-mass! cputter On 21/12/2007, Christiaan Putter <cep...@go...> wrote: > > Hi guys and girls, > > Quick question regarding matplotlib's svg backend... > > I've embeded pyhton into c++ and Qt's (4.3.3) svg support is having some > problems with .svg files created by matplotlib. Text isn't showing up. > Firefox displays the same .svg file correctly though... > > The problem: > > It seems some text stuff is stored in a section called defs at the end of > the file with stuff linking to this earlier in the file. Qt doesn't like > that and only displays the normal plot stuff (lines, etc.) but not the > labels and other text. > > More exact: > > <use xlink:href="#c_7" ..... > > references > > <path id="c_7" d="M10.6875 ..... > > at the end of the file. > > > > When I simply cut and paste the defs section to the beginning of the file > it solves the problem. > > What does the svg standard say about this? I assume Qt's implementation > is defect... > > Has anybody else encountered this problem? I'll send an e-mail to Qt too > and ask them about it. > > Hope you're all having a nice day. > > Regards, > cputter > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >
Between 0.90 and 0.91, the SVG backend was changed to store the glyph outlines of the characters in the SVG file itself. (This is on by default, but can be turned off with the rc parameter svg.embed_char_paths). This helps make the SVG files much more portable, as the need to install the math fonts has long been a FAQ on this list. I've been doing all my testing with Firefox and Inkscape. Is there a simple Qt-based SVG viewer I could add to my testing regimen? I won't pretend to be an expert on the SVG spec, but it does say this: <http://www.w3.org/TR/SVG/struct.html#Head> ==== To provide some SVG user agents with an opportunity to implement efficient implementations in streaming environments, creators of SVG content are encouraged to place all elements which are targets of local URI references within a 'defs' element which is a direct child of one of the ancestors of the referencing element. For example: <?xml version="1.0" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg width="8cm" height="3cm" xmlns="http://www.w3.org/2000/svg"> <desc>Local URI references within ancestor's 'defs' element.</desc> <defs> <linearGradient id="Gradient01"> <stop offset="20%" stop-color="#39F" /> <stop offset="90%" stop-color="#F3F" /> </linearGradient> </defs> <rect x="1cm" y="1cm" width="6cm" height="1cm" fill="url(#Gradient01)" /> <!-- Show outline of canvas using 'rect' element --> <rect x=".01cm" y=".01cm" width="7.98cm" height="2.98cm" fill="none" stroke="blue" stroke-width=".02cm" /> </svg> View this example as SVG (SVG-enabled browsers only) In the document above, the linear gradient is defined within a 'defs' element which is the direct child of the 'svg' element, which in turn is an ancestor of the 'rect' element which references the linear gradient. Thus, the above document conforms to the guideline. ==== So we are complying to that part of the spec. The spec doesn't seem to say anything about whether the defs must appear before or after their use -- but maybe I just can't find the relevant paragraph. In any case, this should be easy enough to fix on matplotlib's end, and certainly won't break compliance with the spec. I'll have a look, and may come back to you for help with testing with Qt if you don't mind. Cheers, Mike Christiaan Putter wrote: > Hi there, > > Just an update regarding the svg problem I was having: > > I simply went back to 0.90 and that's working now. > > Would still be nice to know if the svg output from matplotlib complies > with the standard or whether it's Qt that's messing things up. > > Merry x-mass! > > cputter > > > > On 21/12/2007, *Christiaan Putter* <cep...@go... > <mailto:cep...@go...>> wrote: > > Hi guys and girls, > > Quick question regarding matplotlib's svg backend... > > I've embeded pyhton into c++ and Qt's (4.3.3) svg support is having > some problems with .svg files created by matplotlib. Text isn't > showing up. Firefox displays the same .svg file correctly though... > > The problem: > > It seems some text stuff is stored in a section called defs at the > end of the file with stuff linking to this earlier in the file. Qt > doesn't like that and only displays the normal plot stuff (lines, > etc.) but not the labels and other text. > > More exact: > > <use xlink:href="#c_7" ..... > > references > > <path id="c_7" d="M10.6875 ..... > > at the end of the file. > > > > When I simply cut and paste the defs section to the beginning of the > file it solves the problem. > > What does the svg standard say about this? I assume Qt's > implementation is defect... > > Has anybody else encountered this problem? I'll send an e-mail to > Qt too and ask them about it. > > Hope you're all having a nice day. > > Regards, > cputter > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > <mailto:Mat...@li...> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > <https://lists.sourceforge.net/lists/listinfo/matplotlib-users> > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > > > ------------------------------------------------------------------------ > > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA
Hi Michael, Sorry for getting back to you only now, and thanks for the help. If you have Qt installed there should be an sample Svg viewer app in the examples somewhere. If you'd like I can send it to you somehow, just let me know. I tested the new .svg you sent me it's rendering the same in Firefox and Qt. So it works. Once again thanks for your help and let me know if I can send you something to help with testing in Qt. Personally I think Qt's support for svg is still a bit iffy. Have a nice, Christiaan On 04/01/2008, Michael Droettboom <md...@st...> wrote: > > Can you please test the attached SVG file? > > Cheers, > Mike > > Michael Droettboom wrote: > > Between 0.90 and 0.91, the SVG backend was changed to store the glyph > > outlines of the characters in the SVG file itself. (This is on by > > default, but can be turned off with the rc parameter > > svg.embed_char_paths). This helps make the SVG files much more > > portable, as the need to install the math fonts has long been a FAQ on > > this list. I've been doing all my testing with Firefox and Inkscape. > > Is there a simple Qt-based SVG viewer I could add to my testing regimen? > > > > I won't pretend to be an expert on the SVG spec, but it does say this: > > > > <http://www.w3.org/TR/SVG/struct.html#Head> > > > > ==== > > > > To provide some SVG user agents with an opportunity to implement > > efficient implementations in streaming environments, creators of SVG > > content are encouraged to place all elements which are targets of local > > URI references within a 'defs' element which is a direct child of one of > > the ancestors of the referencing element. For example: > > > > <?xml version="1.0" standalone="no"?> > > <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" > > "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> > > <svg width="8cm" height="3cm" > > xmlns="http://www.w3.org/2000/svg"> > > <desc>Local URI references within ancestor's 'defs' element.</desc> > > <defs> > > <linearGradient id="Gradient01"> > > <stop offset="20%" stop-color="#39F" /> > > <stop offset="90%" stop-color="#F3F" /> > > </linearGradient> > > </defs> > > <rect x="1cm" y="1cm" width="6cm" height="1cm" > > fill="url(#Gradient01)" /> > > <!-- Show outline of canvas using 'rect' element --> > > <rect x=".01cm" y=".01cm" width="7.98cm" height="2.98cm" > > fill="none" stroke="blue" stroke-width=".02cm" /> > > </svg> > > > > View this example as SVG (SVG-enabled browsers only) > > > > In the document above, the linear gradient is defined within a 'defs' > > element which is the direct child of the 'svg' element, which in turn is > > an ancestor of the 'rect' element which references the linear gradient. > > Thus, the above document conforms to the guideline. > > > > ==== > > > > So we are complying to that part of the spec. The spec doesn't seem to > > say anything about whether the defs must appear before or after their > > use -- but maybe I just can't find the relevant paragraph. > > > > In any case, this should be easy enough to fix on matplotlib's end, and > > certainly won't break compliance with the spec. I'll have a look, and > > may come back to you for help with testing with Qt if you don't mind. > > > > Cheers, > > Mike > > > > Christiaan Putter wrote: > >> Hi there, > >> > >> Just an update regarding the svg problem I was having: > >> > >> I simply went back to 0.90 and that's working now. > >> > >> Would still be nice to know if the svg output from matplotlib complies > >> with the standard or whether it's Qt that's messing things up. > >> > >> Merry x-mass! > >> > >> cputter > >> > >> > >> > >> On 21/12/2007, *Christiaan Putter* <cep...@go... > >> <mailto:cep...@go...>> wrote: > >> > >> Hi guys and girls, > >> > >> Quick question regarding matplotlib's svg backend... > >> > >> I've embeded pyhton into c++ and Qt's (4.3.3) svg support is having > >> some problems with .svg files created by matplotlib. Text isn't > >> showing up. Firefox displays the same .svg file correctly > though... > >> > >> The problem: > >> > >> It seems some text stuff is stored in a section called defs at the > >> end of the file with stuff linking to this earlier in the file. Qt > >> doesn't like that and only displays the normal plot stuff (lines, > >> etc.) but not the labels and other text. > >> > >> More exact: > >> > >> <use xlink:href="#c_7" ..... > >> > >> references > >> > >> <path id="c_7" d="M10.6875 ..... > >> > >> at the end of the file. > >> > >> > >> > >> When I simply cut and paste the defs section to the beginning of > the > >> file it solves the problem. > >> > >> What does the svg standard say about this? I assume Qt's > >> implementation is defect... > >> > >> Has anybody else encountered this problem? I'll send an e-mail to > >> Qt too and ask them about it. > >> > >> Hope you're all having a nice day. > >> > >> Regards, > >> cputter > >> > >> > >> > >> > ------------------------------------------------------------------------- > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2005. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >> _______________________________________________ > >> Matplotlib-users mailing list > >> Mat...@li... > >> <mailto:Mat...@li...> > >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >> <https://lists.sourceforge.net/lists/listinfo/matplotlib-users> > >> > >> > >> > >> > ------------------------------------------------------------------------ > >> > >> > ------------------------------------------------------------------------- > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2005. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >> > >> > >> > ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Matplotlib-users mailing list > >> Mat...@li... > >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > > > -- > Michael Droettboom > Science Software Branch > Operations and Engineering Division > Space Telescope Science Institute > Operated by AURA for NASA > >
I've committed these changes to matplotlib SVN, and it should make it into the next release of 0.91.x, if we decide to make one. You may be right that Qt's SVG support is iffy (I don't know enough about the spec to be sure, so I'm not conceding that), but either way it doesn't bother me to make changes that help SVG work in more places. It's like all those pragmatic web developers who have to make things work with IE... Thanks for your help. I'll try to get the Qt SVG demo installed here so I can test with that the next time our SVG code changes. Cheers, Mike Christiaan Putter wrote: > Hi Michael, > > Sorry for getting back to you only now, and thanks for the help. > > If you have Qt installed there should be an sample Svg viewer app in the > examples somewhere. If you'd like I can send it to you somehow, just > let me know. > > I tested the new .svg you sent me it's rendering the same in Firefox and > Qt. So it works. > > Once again thanks for your help and let me know if I can send you > something to help with testing in Qt. Personally I think Qt's support > for svg is still a bit iffy. > > Have a nice, > > Christiaan > > On 04/01/2008, *Michael Droettboom* <md...@st... > <mailto:md...@st...>> wrote: > > Can you please test the attached SVG file? > > Cheers, > Mike > > Michael Droettboom wrote: > > Between 0.90 and 0.91, the SVG backend was changed to store the glyph > > outlines of the characters in the SVG file itself. (This is on by > > default, but can be turned off with the rc parameter > > svg.embed_char_paths). This helps make the SVG files much more > > portable, as the need to install the math fonts has long been a > FAQ on > > this list. I've been doing all my testing with Firefox and > Inkscape. > > Is there a simple Qt-based SVG viewer I could add to my testing > regimen? > > > > I won't pretend to be an expert on the SVG spec, but it does say > this: > > > > < http://www.w3.org/TR/SVG/struct.html#Head> > > > > ==== > > > > To provide some SVG user agents with an opportunity to implement > > efficient implementations in streaming environments, creators of SVG > > content are encouraged to place all elements which are targets of > local > > URI references within a 'defs' element which is a direct child of > one of > > the ancestors of the referencing element. For example: > > > > <?xml version="1.0" standalone="no"?> > > <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" > > " http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> > > <svg width="8cm" height="3cm" > > xmlns="http://www.w3.org/2000/svg"> > > <desc>Local URI references within ancestor's 'defs' > element.</desc> > > <defs> > > <linearGradient id="Gradient01"> > > <stop offset="20%" stop-color="#39F" /> > > <stop offset="90%" stop-color="#F3F" /> > > </linearGradient> > > </defs> > > <rect x="1cm" y="1cm" width="6cm" height="1cm" > > fill="url(#Gradient01)" /> > > <!-- Show outline of canvas using 'rect' element --> > > <rect x=".01cm" y=".01cm" width="7.98cm" height=" 2.98cm" > > fill="none" stroke="blue" stroke-width=".02cm" /> > > </svg> > > > > View this example as SVG (SVG-enabled browsers only) > > > > In the document above, the linear gradient is defined within a > 'defs' > > element which is the direct child of the 'svg' element, which in > turn is > > an ancestor of the 'rect' element which references the linear > gradient. > > Thus, the above document conforms to the guideline. > > > > ==== > > > > So we are complying to that part of the spec. The spec doesn't > seem to > > say anything about whether the defs must appear before or after their > > use -- but maybe I just can't find the relevant paragraph. > > > > In any case, this should be easy enough to fix on matplotlib's > end, and > > certainly won't break compliance with the spec. I'll have a > look, and > > may come back to you for help with testing with Qt if you don't > mind. > > > > Cheers, > > Mike > > > > Christiaan Putter wrote: > >> Hi there, > >> > >> Just an update regarding the svg problem I was having: > >> > >> I simply went back to 0.90 and that's working now. > >> > >> Would still be nice to know if the svg output from matplotlib > complies > >> with the standard or whether it's Qt that's messing things up. > >> > >> Merry x-mass! > >> > >> cputter > >> > >> > >> > >> On 21/12/2007, *Christiaan Putter* <cep...@go... > <mailto:cep...@go...> > >> <mailto: cep...@go... > <mailto:cep...@go...>>> wrote: > >> > >> Hi guys and girls, > >> > >> Quick question regarding matplotlib's svg backend... > >> > >> I've embeded pyhton into c++ and Qt's (4.3.3) svg support is > having > >> some problems with .svg files created by matplotlib. Text isn't > >> showing up. Firefox displays the same .svg file correctly > though... > >> > >> The problem: > >> > >> It seems some text stuff is stored in a section called defs > at the > >> end of the file with stuff linking to this earlier in the > file. Qt > >> doesn't like that and only displays the normal plot stuff > (lines, > >> etc.) but not the labels and other text. > >> > >> More exact: > >> > >> <use xlink:href="#c_7" ..... > >> > >> references > >> > >> <path id="c_7" d="M10.6875 ..... > >> > >> at the end of the file. > >> > >> > >> > >> When I simply cut and paste the defs section to the > beginning of the > >> file it solves the problem. > >> > >> What does the svg standard say about this? I assume Qt's > >> implementation is defect... > >> > >> Has anybody else encountered this problem? I'll send an > e-mail to > >> Qt too and ask them about it. > >> > >> Hope you're all having a nice day. > >> > >> Regards, > >> cputter > >> > >> > >> > >> > ------------------------------------------------------------------------- > > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2005. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > <http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/> > >> _______________________________________________ > >> Matplotlib-users mailing list > >> Mat...@li... > <mailto:Mat...@li...> > >> <mailto:Mat...@li... > <mailto:Mat...@li...>> > >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > >> <https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > >> > >> > >> > >> > ------------------------------------------------------------------------ > >> > >> > ------------------------------------------------------------------------- > > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2005. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > <http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/> > >> > >> > >> > ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Matplotlib-users mailing list > >> Mat...@li... > <mailto:Mat...@li...> > >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users > <https://lists.sourceforge.net/lists/listinfo/matplotlib-users> > > > > -- > Michael Droettboom > Science Software Branch > Operations and Engineering Division > Space Telescope Science Institute > Operated by AURA for NASA > > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA
Hello, I am trying to construct a plot that is a barchartwith the X-axis being dates. I have used the plot_dates to generated line plots that look great, however, I cannotfigure out a way to do a barchart with dates as theXaxis.Has anyone done one of these _________________________________________________________________ Explore the seven wonders of the world http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE