matplotlib-devel Mailing List for matplotlib

On Thu, Dec 16, 2010 at 11:13 AM, Benjamin Root <ben...@ou...> wrote:
> I have been working on a new feature for mplot3d. It is a bit of a hack
> but with this patch the offset information in a tick formatter can now be
> displayed. The offset text is located so that the offset texts for two
> jointed axis are not co-located, and is placed at the same distance away
> from the axis as the axis label. The text is aligned so that it should
> always be "tucked" underneath the axis as one rotates the plot. There are a
> few edge cases as one rotates where an offset text will "stick out", but
> they should be very infrequent.
>
> I have attached a patch to enable this feature and also an example script
> that showcases it.
>
> This is how it should look:
> http://dl.dropbox.com/u/7325604/mplot3d_offsettest.png
>
> Let me know what you think, and if all is good, I will add it to the
> development branch soon.
>
> Ben Root
>
Since there haven't been any objections, I will commit this to the
development branch today.
Ben Root

On Wed, Dec 15, 2010 at 4:47 PM, Justin Peel <jp...@gm...> wrote:
> I decided to revisit this briefly and found another pretty easy change
> that gives a fairly significant speed boost for a large number of
> points. Basically, I just used two list comprehensions instead of
> looping.
>
>
Justin,
I finally had a chance to test this out and it does seem to give a slight
speedup. It also does make for some cleaner code as well, which is always a
plus! I still think the main clog, though, is the double for-loops that the
code is contained in. I will probably take a closer look at it in January
to see if there is a different way to accomplish the same thing.
Ben Root

I built a binary installer for matplotlib trunk rev 8843 (because it 
leaks memory less than 1.0.0 release). I built it the same way I built 
the 1.0.0 binary 
<http://www.astro.washington.edu/users/rowen/BuildingMatplotlibForMac.htm
l> on Mac OS X 10.4 using python.org Python 2.6.x (where x is probably 
6).
The binary is available here:
<http://www.astro.washington.edu/users/rowen/python/matplotlib-1.0.0+svn8
843-python.org-py2.6-macosx10.3.dmg>
It work fine on Mac OS X 10.4 and 10.5, but on 10.6 attempting to import 
pylab almost always segfaults (and the few times I've gotten it to work 
on 10.6 I can break it by deleting ~/.fontconfig and ~/.matplotlib and 
running Python again). I've tried it on newly created accounts and it 
segfaults. Another user of Snow Leopard first reported the problem. So 
it's not just me.
I've appended part of a crash log.
I built this binary the same way I built the matplotlib 1.0.0 binary, 
which has no problems.
Any ideas?
-- Russell
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Application Specific Information:
abort() called
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0x90e1b176 __kill + 10
1 libSystem.B.dylib 0x90e1b168 kill$UNIX2003 + 32
2 libSystem.B.dylib 0x90ead89d raise + 26
3 libSystem.B.dylib 0x90ec39bc abort + 93
4 org.python.python 0x004e3e99 Py_FatalError + 73
5 libSystem.B.dylib 0x90e2046b _sigtramp + 43
6 ??? 0000000000 0 + 0
7 libSystem.B.dylib 0x90e29378 
_Unwind_GetLanguageSpecificData + 24
8 libstdc++.6.dylib 0x940c4d86 __gxx_personality_v0 + 120
9 libgcc_s.1.dylib 0x0389f476 _Unwind_Backtrace + 278
10 libgcc_s.1.dylib 0x0389f890 _Unwind_Resume + 112
11 ft2font.so 0x03d5c3a3 
FT2Font::FT2Font(std::string) + 4385
12 ft2font.so 0x03d5c805 
ft2font_module::new_ft2font(Py::Tuple const&) + 505
13 ft2font.so 0x03dc89c2 
Py::ExtensionModule<ft2font_module>::invoke_method_varargs(void*, 
Py::Tuple const&) + 90
14 ft2font.so 0x03d7170c 
method_varargs_call_handler + 342
15 org.python.python 0x004bcd25 PyEval_EvalFrameEx + 19429
16 org.python.python 0x004bee9d PyEval_EvalCodeEx + 2109
17 org.python.python 0x004bcf0c PyEval_EvalFrameEx + 19916