[Matplotlib-users] Memory leak involving matplotlib in webapplication
Hi, I have problems with a memory leak in a webapplication involving matplotlib. Basically, I have a function which usies the OO way of generating the graph, printing it to a StringIO object and returning that. I've posted a question with the details on stackoverflow ( http://stackoverflow.com/questions/7740832/need-help-identifying-a-memory-leak-involving-matplotlib-and-flask). Any ideas are highly appreciated. -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Matplotlib 1.1.0 and PySide
Dear all, matplotlib users and devs, I have been trying the latest announced version of Matplotlib (1.1.0). The new feature that attracted me is the PySide support. However, I tried to install it under Ubuntu 11.04, but I needed pyqt4 installed in order to install it from source. Is there a way to install it with only pyside installed? Once installed, I could uninstall pyqt4, and run my python scripts, with replacing pyqt4 by pyside. However, I am not sure what the ETS environment variable is (yes, it s related to the enthought tool suite, but what if I do not want it - for now), and I had to set the QT_API variable on the command line call to python: setting it as a normal environment variable does not work. So, to be able to use only pyside, I need to do: QT_API=pyside python myscript.py Is that the right way to do so? Is there any way of setting the QT_API more definitely, and not having to change the call to python? So far, my program (I really have only one at the moment) seems to work well, using QtCore, QtGui and phonon, except for phonon, where it seems that seeking in a file does not really work under Ubuntu... if anyone has an idea (I know, not the right mailing list, but just in case). At last, probably a question that will solve all the above ones: when is the new Matplotlib version going to be included in EPD? That's, by the way, mainly the reason why I consider using PySide instead of PyQt4. Thanks for reading! Cheers, Jean-Louis -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Memory leak involving matplotlib in webapplication
On Thu, Oct 13, 2011 at 12:42 AM, Viktor Forsman viktor.fors...@gmail.com wrote: Hi, I have problems with a memory leak in a webapplication involving matplotlib. Basically, I have a function which usies the OO way of generating the graph, printing it to a StringIO object and returning that. I've posted a question with the details on stackoverflow (http://stackoverflow.com/questions/7740832/need-help-identifying-a-memory-leak-involving-matplotlib-and-flask). Any ideas are highly appreciated. What version of matplotlib and numpy are you using? Does it help to do: import gc gc.collect() after a call to plot total or plot month? Also, you appear to be adding data to plot_values and storing this on every call. Are you sure the leak is in mpl and not here? JDH -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] X Error since upgrade to 1.1.0
Using interactively (via emacs/ipython), on closing a plot window I see: X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 (X_GetProperty) Resource id: 0x5802e1b -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] X Error since upgrade to 1.1.0
On Thu, Oct 13, 2011 at 8:03 AM, Neal Becker ndbeck...@gmail.com wrote: Using interactively (via emacs/ipython), on closing a plot window I see: X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 (X_GetProperty) Resource id: 0x5802e1b Could you give us some more information. What operating system? Which matplotlib backend and GUI version? What version of ipython? What, exactly do you do to reproduce the problem? -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] X Error since upgrade to 1.1.0
linux fedora 15 x86_64 backend : Qt4Agg Now it's gone away, after killing the *Python* buffer and restarting the python process. If it comes back I'll try to get more info. John Hunter wrote: On Thu, Oct 13, 2011 at 8:03 AM, Neal Becker ndbeck...@gmail.com wrote: Using interactively (via emacs/ipython), on closing a plot window I see: X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 (X_GetProperty) Resource id: 0x5802e1b Could you give us some more information. What operating system? Which matplotlib backend and GUI version? What version of ipython? What, exactly do you do to reproduce the problem? -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] X Error since upgrade to 1.1.0
On Thursday, October 13, 2011, Neal Becker ndbeck...@gmail.com wrote: Using interactively (via emacs/ipython), on closing a plot window I see: X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 (X_GetProperty) Resource id: 0x5802e1b Which backend/platform? Ben Root -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plotting two (x) axes for the same figure
Hi,
Not directly answering your questions but the code below produces what you
are trying to achieve:
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
plt.close('all')
fig1 = plt.figure(figsize=(11, 8.5))
ax1 = SubplotHost(fig1, 111)
fig1.add_subplot(ax1)
## define data
x = np.arange(1,11)
y = np.random.random(len(x))
# First X-axis
ax1.plot(x, y)
xmin, xmax = ax1.xaxis.get_view_interval()
ax1.xaxis.set_label_text(First X-axis)
ax1.yaxis.set_label_text(Sample data)
# Second X-axis
parx = ax1.twiny()
offset = 0, -60
new_axisline = parx.get_grid_helper().new_fixed_axis
parx.axis[bottom] = new_axisline(loc=bottom, axes=parx, offset=offset)
parx.axis[bottom].label.set_text(Second X-axis)
line1, = parx.plot((1./x), np.ones(len(x)))
line1.set_visible(0)
parx.set_xlim(xmin=xmax,xmax=xmin)
parx.axis[top].set_visible(False)
ax1.grid(1)
plt.tight_layout()
plt.show()
A few notes:
1-) axes is plural for axis. I always get confused with these words. Tricky
English :)
2-) This code uses the older AxisGrid toolkit functions, and not super
efficient since it makes an empty plot call with a different x-units.
However, using the same ideas and with some dedication you can create
multi-axes like the one shown here -
http://imageshack.us/photo/my-images/820/plot1r.png/
I had tried the newer AxisGrid approach as JJ suggested but I failed making
the plot look pretty. Plus sometimes using the AffineTransforms are not very
practical.
3-) I said empty plot call but it is actually where you convert your unit.
(np.ones call is another dummy call since the line is made invisible after
its call) To me it is more explicit than converting units via transforms. In
this example I just assume x as wavelength and convert it to wavenumber with
1/x. You need to adjust that call according to your unit conversion as well
as adjusting the limits of your newly scaled unit.
As usual JJ can give a more elegant solution for your question, but
sometimes practicality beats purity and you engineer your own solution.
On Wed, Oct 12, 2011 at 11:36 PM, List Comprehension
listcomprehens...@gmail.com wrote:
Hello, I am interested in plotting two (x) axes for the same figure (one of
is just showing linearly transformed values of the other); one of them
offset from the plot if possible. For instance, I have the following code:
import numpy as np
import matplotlib.pyplot as plt
import mpl_toolkits.axisartist as AA
## define data
x = np.array(range(11))
xlab = x*2
y = np.random.random(len(x))
fig = plt.figure()
## first axes which is only for drawing the axis
axsecond = AA.Subplot(fig, 1,1,1)
fig.add_subplot(axsecond)
axsecond.set_xlim([min(xlab),max(xlab)])
axsecond.set_xticks(np.linspace(min(xlab),max(xlab),5))
axsecond.axis[bottom, top, left, right].set_visible(False)
axsecond.axis[newx] = axsecond.new_floating_axis(nth_coord=0, value=1)
axsecond.axis[newx].set_axis_direction(top)
axsecond.set_clip_on(False)
axsecond.axis[newx].toggle(all=True)
axsecond.axis[newx].set_visible(True)
plt.draw()
## the main set of axes containing the data
axmain = fig.add_subplot(1,1,1)
plt.plot(x,y)
In this example I wonder
1) How to turn off the top axis of axmain so the ticks from axsecond are
visible? Something like axmain[top].set_visible(False) (which does not
work of course).
2) If I wanted to include an offset (below the main axis), I feel like
something like the following should work but doesn't:
ax.axis[newx] = ax.new_floating_axis(nth_coord=0, value=-0.2) ## outside
of (0,1)
ax.axis[newx].set_axis_direction(bottom)
ax.set_clip_on(False)
Thanks in advance!
--
Gökhan
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Re: [Matplotlib-users] Memory leak involving matplotlib in webapplication
I use matplotlib 1.1 and numpy 1.5.0 gc.collect() after the function call solved the problem! Thanks alot! Den torsdagen den 13:e oktober 2011 skrev John Hunterjdh2...@gmail.com: On Thu, Oct 13, 2011 at 12:42 AM, Viktor Forsman viktor.fors...@gmail.com wrote: Hi, I have problems with a memory leak in a webapplication involving matplotlib. Basically, I have a function which usies the OO way of generating the graph, printing it to a StringIO object and returning that. I've posted a question with the details on stackoverflow ( http://stackoverflow.com/questions/7740832/need-help-identifying-a-memory-leak-involving-matplotlib-and-flask ). Any ideas are highly appreciated. What version of matplotlib and numpy are you using? Does it help to do: import gc gc.collect() after a call to plot total or plot month? Also, you appear to be adding data to plot_values and storing this on every call. Are you sure the leak is in mpl and not here? JDH -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib 1.1.0 and PySide
Hi Jean-Louis, On Thu, Oct 13, 2011 at 1:47 AM, Durrieu Jean-Louis jean-louis.durr...@epfl.ch wrote: Is that the right way to do so? Is there any way of setting the QT_API more definitely, and not having to change the call to python? Yes, in your $HOME/.bashrc file that your shell loads at startup time, you can write export QT_API=pyside And this will ensure that you always have this variable set as part of your 'environment'. The concept of 'environment' is a unix-specific idea of a set of variables and other parameters visible to any program; you can actually read and write the enviroment in python by importing 'os' and using the os.environ variable: $ export SOMEVAR=Hello matplotlib $ ipython --no-banner In [1]: import os In [2]: os.environ['SOMEVAR'] Out[2]: 'Hello matplotlib' Cheers, f -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib 1.1.0 and PySide
On 10/12/2011 10:47 PM, Durrieu Jean-Louis wrote: Dear all, matplotlib users and devs, I have been trying the latest announced version of Matplotlib (1.1.0). The new feature that attracted me is the PySide support. However, I tried to install it under Ubuntu 11.04, but I needed pyqt4 installed in order to install it from source. Is there a way to install it with only pyside installed? There is no compiled qt4 code, so installation should not require pyqt4--and I don't think it does. What led to your conclusion that you needed it to install from source? In any case, I opened https://github.com/matplotlib/matplotlib/issues/521 for this. Once installed, I could uninstall pyqt4, and run my python scripts, with replacing pyqt4 by pyside. However, I am not sure what the ETS environment variable is (yes, it s related to the enthought tool suite, but what if I do not want it - for now), and I had to set the QT_API variable on the command line call to python: setting it as a normal environment variable does not work. So, to be able to use only pyside, I need to do: QT_API=pyside python myscript.py Is that the right way to do so? Is there any way of setting the QT_API more definitely, and not having to change the call to python? This does not make sense to me. Assuming you are using bash, put this in your .bashrc file: export QT_API=pyside Anything you execute in a terminal window opened after that change should find the new environment variable. Eric So far, my program (I really have only one at the moment) seems to work well, using QtCore, QtGui and phonon, except for phonon, where it seems that seeking in a file does not really work under Ubuntu... if anyone has an idea (I know, not the right mailing list, but just in case). At last, probably a question that will solve all the above ones: when is the new Matplotlib version going to be included in EPD? That's, by the way, mainly the reason why I consider using PySide instead of PyQt4. Thanks for reading! Cheers, Jean-Louis -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib 1.1.0 and PySide
Hi Eric, Fernando, thanks for your answers! On Oct 13, 2011, at 8:47 PM, Eric Firing wrote: On 10/12/2011 10:47 PM, Durrieu Jean-Louis wrote: There is no compiled qt4 code, so installation should not require pyqt4--and I don't think it does. What led to your conclusion that you needed it to install from source? It s just that when I type python setup.py build/--help/install, depending on whether pyqt4 is installed or not, the script detects that Qt is present or not (respectively), and pyside does not change that behaviour. I must admit I did not try to run my script even when Qt was not detected, maybe it works... But I guess there is a consequence to the detection of Qt at the build step? Sorry for not providing the exact output of the build step, I m on another computer. On my mac, the section of interest is: OPTIONAL BACKEND DEPENDENCIES libpng: 1.5.2 Tkinter: Tkinter: version not identified, Tk: 8.5, Tcl: 8.5 Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: yes Qt: no Qt4: Qt: 4.7.3, PyQt4: 4.8.5 Cairo: no Here, it detected my pyqt4. But when it s not there, even if pyside is installed, I get a Qt4: no instead... Do you mean that it's still going to work, even it was not detected there? This does not make sense to me. Assuming you are using bash, put this in your .bashrc file: export QT_API=pyside Anything you execute in a terminal window opened after that change should find the new environment variable. Oh, sorry for that! I must have been confused, I think I only typed QT_API=pyside at the prompt, so I guess without the export (doh!), that was useless... Since the doc (somewhere) talked about ETS environment variables, I thought there was something else to it. If not, then I ll have to learn my bash again :-) Not a big issue, anyway! Cheers! Jean-Louis -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Matplotlib 1.1.0 and PySide
On 10/13/2011 09:50 AM, Durrieu Jean-Louis wrote: Hi Eric, Fernando, thanks for your answers! On Oct 13, 2011, at 8:47 PM, Eric Firing wrote: On 10/12/2011 10:47 PM, Durrieu Jean-Louis wrote: There is no compiled qt4 code, so installation should not require pyqt4--and I don't think it does. What led to your conclusion that you needed it to install from source? It s just that when I type python setup.py build/--help/install, depending on whether pyqt4 is installed or not, the script detects that Qt is present or not (respectively), and pyside does not change that behaviour. I must admit I did not try to run my script even when Qt was not detected, maybe it works... But I guess there is a consequence to the detection of Qt at the build step? Sorry for not providing the exact output of the build step, I m on another computer. On my mac, the section of interest is: OPTIONAL BACKEND DEPENDENCIES libpng: 1.5.2 Tkinter: Tkinter: version not identified, Tk: 8.5, Tcl: 8.5 Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to import gtk in your build/install environment Mac OS X native: yes Qt: no Qt4: Qt: 4.7.3, PyQt4: 4.8.5 Cairo: no Here, it detected my pyqt4. But when it s not there, even if pyside is installed, I get a Qt4: no instead... Do you mean that it's still going to work, even it was not detected there? Yes, it should work fine; as far as I know, nothing depends on the outcome of that auto-detection for qt4. The pyside support is always included in backend_qt4.py and backend_qt4agg.py, which are pure python, and are present regardless of whether pyqt4 itself is detected. Eric This does not make sense to me. Assuming you are using bash, put this in your .bashrc file: export QT_API=pyside Anything you execute in a terminal window opened after that change should find the new environment variable. Oh, sorry for that! I must have been confused, I think I only typed QT_API=pyside at the prompt, so I guess without the export (doh!), that was useless... Since the doc (somewhere) talked about ETS environment variables, I thought there was something else to it. If not, then I ll have to learn my bash again :-) Not a big issue, anyway! Cheers! Jean-Louis -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot arrows for wind direction (degrees)
Another quick question,
I noticed that the wind direction appeared back-to-front so I have added a
negative to my equation as I am in the southern hemisphere. It now looks
correct but I wanted to check if this is the right way to do this? I saw
something called 'flip' for barb but nothing for quiver.
Thanks, see code below
map = Basemap(projection='merc',llcrnrlat=-40,urcrnrlat=-33,
llcrnrlon=139.0,urcrnrlon=151.0,lat_ts=0,resolution='i')
x,y=map(*N.meshgrid(LON,LAT))
u=-1*N.sin(WDIR*N.pi/180)# added negative to account for
southern hemisphere
v=-1*N.cos(WDIR*N.pi/180)
map.quiver(x,y,u, v)
On Wed, Oct 5, 2011 at 3:20 PM, questions anon questions.a...@gmail.comwrote:
thank you! of course!
On Wed, Oct 5, 2011 at 3:08 PM, Eric Firing efir...@hawaii.edu wrote:
On 10/04/2011 05:40 PM, questions anon wrote:
Excellent, thank you. That works for both quiver and barb.
In regards to the shape that has to do with the netcdf file, wind
direction variable also has lat and lon. I ended up needing to slice so
I could skip a few points otherwise there was too many arrows on the
map.
Below is the code that worked in case someone else needs help.
Are you sure it worked correctly? I don't think so. See below.
Thanks again
from netCDF4 import Dataset
import numpy as N
import pylab as plt
from numpy import ma as MA
from mpl_toolkits.basemap import Basemap
import os
ncfile=Dataset('E:/temp_winddir/IDZ00026_VIC_ADFD_Wind_Dir_SFC.nc',
'r+', 'NETCDF4')
WDIR=ncfile.variables['Wind_Dir_SFC'][20,0::5,0::5]
Don't you need to convert from degrees to radians? sin and cos (used
below) expect radians, not degrees. You can use N.deg2rad(WDIR) to
convert.
LAT=ncfile.variables['latitude'][0::5]
LON=ncfile.variables['longitude'][0::5]
TIME=ncfile.variables['time'][20]
ncfile.close()
map = Basemap(projection='merc',llcrnrlat=-40,urcrnrlat=-33,
llcrnrlon=139.0,urcrnrlon=151.0,lat_ts=0,resolution='i')
x,y=map(*N.meshgrid(LON,LAT))
u=1*N.sin(WDIR)
v=1*N.cos(WDIR)
map.quiver(x,y,u, v)
Assuming you do convert to radians the above will work for your mercator
projection but it will not align the vectors correctly with respect to
the parallels and meridians for other projections, so you should use
map.rotate_vector as in the basemap quiver demo.
Eric
# otherwise use the barb tool - map.barbs(x,y,u, v)
plt.title('Wind Direction')
plt.show()
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Re: [Matplotlib-users] plot arrows for wind direction (degrees)
On Thursday, October 13, 2011, questions anon questions.a...@gmail.com wrote: Another quick question, I noticed that the wind direction appeared back-to-front so I have added a negative to my equation as I am in the southern hemisphere. It now looks correct but I wanted to check if this is the right way to do this? I saw something called 'flip' for barb but nothing for quiver. It probably nothing to do with southern hemisphere but rather that it is typical for wind data to be recorded and displayed as direction from, instead of direction to. If you think flip should be available for quiver(), file a feature request. Ben Root -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot arrows for wind direction (degrees)
On 10/13/2011 12:22 PM, Benjamin Root wrote: On Thursday, October 13, 2011, questions anon questions.a...@gmail.com mailto:questions.a...@gmail.com wrote: Another quick question, I noticed that the wind direction appeared back-to-front so I have added a negative to my equation as I am in the southern hemisphere. It now looks correct but I wanted to check if this is the right way to do this? I saw something called 'flip' for barb but nothing for quiver. It probably nothing to do with southern hemisphere but rather that it is typical for wind data to be recorded and displayed as direction from, instead of direction to. If you think flip should be available for quiver(), file a feature request. It looks to me like the barb flip is for something else entirely--it is a right-hand versus left-hand sort of flip. This would be inappropriate for quiver, which makes symmetric arrows. I would strongly oppose any proposal for a kwarg to reverse the direction of the arrows. Eric Ben Root -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] key_press_event weirdness
Hi, I am experiencing something a bit strange with 'key_press_event': The event is not detected unless I click with the mouse on the canvas (The grey area around the axis). I verified this with my own code as well as with some unmodified example ( http://matplotlib.sourceforge.net/examples/event_handling/keypress_demo.html?highlight=key_press_event ). I built mpl from a recent revision (a few days old). Does anyone else experience this? Is this the expected behavior? I believe it was enough to have the figure window focused to get key events before, but I haven't used this feature for some time. Thanks, Jorges -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] key_press_event weirdness
On Thu, Oct 13, 2011 at 9:52 PM, Jorge Scandaliaris jorgesmbox...@yahoo.eswrote: Hi, I am experiencing something a bit strange with 'key_press_event': The event is not detected unless I click with the mouse on the canvas (The grey area around the axis). I verified this with my own code as well as with some unmodified example ( http://matplotlib.sourceforge.net/examples/event_handling/keypress_demo.html?highlight=key_press_event ). I built mpl from a recent revision (a few days old). Does anyone else experience this? Is this the expected behavior? I believe it was enough to have the figure window focused to get key events before, but I haven't used this feature for some time. Thanks, Jorges Which backend and platform are you using? Ben Root -- All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
