matplotlib-users Mailing List for matplotlib

signal seeker wrote:
> Bill,
> 
> The problem is I am writing a bunch of diagonistic tools for users who
> do not know anything about unix.
> they just want to type a bunch of commands on a shell and see the plots
> and they hardly know anything fancy like sending processes to the
> background :)
> 
> I guess, I am going to have to use threads or sub processes to spawn new
> plots.
That's exactly what Bill's ezplot is supposed to do. I am sure that he
will appreciate any helping making it easier to just work without the
user having to know or do anything. (I know I will.)

Bill,
The problem is I am writing a bunch of diagonistic tools for users who do
not know anything about unix.
they just want to type a bunch of commands on a shell and see the plots and
they hardly know anything fancy like sending processes to the background :)
I guess, I am going to have to use threads or sub processes to spawn new
plots.
Thanks,
ss
On 6/13/07, Bill Baxter <wb...@gm...> wrote:
>
> On 6/13/07, signal seeker <see...@gm...> wrote:
> >
> > Bill,
> >
> > Thanks for your reply. pylab(ion) is not what I meant. Consider this
> simply
> > script -
> > .....
> > # simple.py
> > from pylab import *
> > plot([1,2,3])
> > show()
> > ....
> >
> > Now, if I do python simple.py on a cmd prompt, this will open up a plot
> > window, but the script won't return until the plot window is closed.
> > I would like simple.py process to end but the plot window to be still
> up. I
> > have users who would like to type one command after another and not have
> to
> > close any of the plot windows created.
>
> I see. In that case, I think you just want
> $ simple.py &
> on unix and
> c:\> start python simple.py
> on Windows.
>
> In both cases you can put those commands into a script so the user
> just types 'run_simple'.
>
> --bb
>

Steve,
Thank you, I think you are right in general (the multiply by 60000 is
correct though). Since mucking about with my code a bit more it has
disappeared. Just strange to see an additive, as opposed to
multiplicative, error given the type of calcs that I am doing, hence my
doubting the meaning of the label.
many thanks
-Stuart
Steve Schmerler said:
>> lines1.extend(pylab.plot(In, inputFlow * 60000, 'g--'))
>
> Couldn't it be because of "inputFlow * 60000", which may cause the
> plotted values to be large (so it is related to what you do
> numerically)? The same happens for e.g. plot(array([1,2,3])+1e5), i.e.
> if the values' changes are small compared to their magnitude. Without
> that, the tick numbers would read 100001.0, 100002.0, 100003.0 in this
> example, which may not look very pretty.
-----------------------------
Stuart Yarrow

Stuart Yarrow wrote:
> Hi All,
> 
> An extra label is appearing on the plot I'm generating. I wonder if anyone
> could explain what it means/how to get rid of it?
> 
> The plot is available at http://test.outpost.org.uk/example.png - the
> unexplained label is the '+4.05674e7' in the upper right hand corner. This
> value doesn't appear to be related to what I'm doing numerically.
> 
> # Plot Results
> lines1 = []
> plot1 = pylab.subplot(211)
> lines1.extend(pylab.plot(In, thrust / g, 'b-'))
> pylab.ylabel('Thrust (kgf)')
> pylab.grid(True)
> ax2 = pylab.twinx()
> lines1.extend(pylab.plot(In, inputFlow * 60000, 'g--'))
Couldn't it be because of "inputFlow * 60000", which may cause the 
plotted values to be large (so it is related to what you do 
numerically)? The same happens for e.g. plot(array([1,2,3])+1e5), i.e. 
if the values' changes are small compared to their magnitude. Without 
that, the tick numbers would read 100001.0, 100002.0, 100003.0 in this 
example, which may not look very pretty.
HTH
-- 
cheers,
steve
Random number generation is the art of producing pure gibberish as 
quickly as possible.

Hello,
I am quite new to matplotlib.
I'm drawing some points on a figure and have implemented a pick_event
callback, in order to show something near the point I click. Now the problem
is that when I show the text near the point, it hides a lot of other points,
so I would like the text to dissapear (for example after some seconds).
How could I do this ? (if it's possible)
Btw, since I use matplotlib, I completely abandoned gnuplot.
It's the best free plotting tool that I found.
Thank you.
Best regards,
-- 
Alexandru Ionut Munteanu
 _____________________________________________________________________________ 
Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail 

Bill,
Thanks for your reply. pylab(ion) is not what I meant. Consider this simply
script -
.....
# simple.py
from pylab import *
plot([1,2,3])
show()
....
Now, if I do python simple.py on a cmd prompt, this will open up a plot
window, but the script won't return until the plot window is closed.
I would like simple.py process to end but the plot window to be still up. I
have users who would like to type one command after
another and not have to close any of the plot windows created.
I looked at ezplot, but it looks like a rather heavy weight soln, but maybe
I need to do something similar. Is there any other way around this?
Thanks,
ss
On 6/12/07, Bill Baxter <wb...@gm...> wrote:
>
> I'm not sure what you're after exactly, but your design needs may be
> solved by calling pylab.ion(True).
> If not the ezplot library that I wrote may do it for you.
> http://www.python.org/pypi/ezplot/0.1.0a3
>
> --bb
>
> On 6/13/07, signal seeker <see...@gm...> wrote:
> >
> > Hi All,
> >
> > I am very new to matplotlib and still trying to find my way through docs
> and
> > api, so please excuse me if there is a simple way to do this.
> >
> > So the situation is this - I would like to write a script that spawns
> > multiple plots and exits, but the plots window do not die
> > until they are explicitly closed.
> > Is there a simple way to do this. All the examples that
> > I have looked at so far have scripts that
> > only exit once the call to show() returns.
> > Is there some mechanism that
> > matplotlib provides to make the show() return? I am of course using the
> > pylab interface now, but I can start using the core matplotlib api if
> need.
> > Thanks in advance for your time.
> >
> > Regards,
> > -ss
> >
> >
> -------------------------------------------------------------------------
> > This SF.net email is sponsored by DB2 Express
> > Download DB2 Express C - the FREE version of DB2 express and take
> > control of your XML. No limits. Just data. Click to get it now.
> > http://sourceforge.net/powerbar/db2/
> > _______________________________________________
> > Matplotlib-users mailing list
> > Mat...@li...
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
> >
>

Hi All,
An extra label is appearing on the plot I'm generating. I wonder if anyone
could explain what it means/how to get rid of it?
The plot is available at http://test.outpost.org.uk/example.png - the
unexplained label is the '+4.05674e7' in the upper right hand corner. This
value doesn't appear to be related to what I'm doing numerically.
My plotting code is below (should probably tidy this up!):
# Plot Results
lines1 = []
plot1 = pylab.subplot(211)
lines1.extend(pylab.plot(In, thrust / g, 'b-'))
pylab.ylabel('Thrust (kgf)')
pylab.grid(True)
ax2 = pylab.twinx()
lines1.extend(pylab.plot(In, inputFlow * 60000, 'g--'))
pylab.ylabel('Flow (lpm)')
pylab.legend(lines1, ('Thrust', 'Flow'), 2) #(0.02,0.8)
plot1.set_xticklabels([])
pylab.title('%s / %s (%d lpm) / %d bar' % (self.thruster.name,
self.valve.name, self.valve.ratedFlow * 60000, sysPres * 10**-5))
lines2 = []
plot2 = pylab.subplot(212)
lines2.extend(pylab.plot(In, thrusterPower * 0.001, 'c--'))
lines2.extend(pylab.plot(In, valvePower * 0.001, 'r:'))
lines2.extend(pylab.plot(In, totalPower * 0.001, 'm-'))
pylab.ylabel('Power (kW)')
pylab.grid(True)
ax4 = pylab.twinx()
lines2.extend(pylab.plot(In, 1000 * efficiency / g, 'y-'))
pylab.ylabel('Efficiency (kgf/kW)')
pylab.xlabel('Control Current (normalised)')
pylab.legend(lines2, ('Thruster', 'Valve', 'Total', 'Efficiency'), 2)
#(0.02,0.6)
pylab.savefig(filename, orientation='landscape')
pylab.clf()
Thanks in advance for any help/advice.
-Stuart
-----------------------------
Stuart Yarrow

On 2007年6月12日 13:34:35 -0500, "Johnny Lin" <jl...@jo...>
said:
> Hi all,
> 
> I'm creating a cylindrical map, global in longitude and centered around
> 180 and the equator, using the following code:
> 
> map = Basemap( projection='cyl', resolution='l'
> , llcrnrlon=0, urcrnrlon=360
> , llcrnrlat=-76.875, urcrnrlat=76.875
> , lon_0=180, lat_0=0 )
> map.drawmeridians(pylab.arange(0,361,45), labels=[0,0,0,1])
> 
> The result is a map with labels of 0, 45E, 90E, ... 45W, but without
> a label at 0 (i.e. 360). Does anyone know how to make that label
> come up? I'm running Python 2.4 in Mac OSX 10.4, with matplotlib
> 0.90.1 and basemap 0.9.5.
> 
> Thanks much!
> 
> Best,
> -Johnny
> -- 
Johnny: The labels are drawn from 180E to 180W, and each longitude is
only labelled once. That means you don't get a the wraparound longitude
labelled at both the left and right side of the plot Sorry!
-Jeff
------
Jeffrey S. Whitaker
Phone: (303)497-6313
FAX: (303)497-6449
NOAA/OAR/CDC R/CDC1 
325 Broadway, Boulder, CO, USA 80305-3328 
http://www.cdc.noaa.gov/people/jeffrey.s.whitaker