Re: [Matplotlib-users] A problem of masked "pcolorfast" on WXAgg
This is a longstanding problem with the quadmesh extension code that is
used by pcolorfast when the grid is not rectangular. It is not likely
to be fixed on the maintenance branch, but it is fixed on the svn trunk,
thanks to work by Michael Drooettboom.
Eric
minakawa wrote:
> Hello List,
>
> I found a problem that masked "pcolorfast" does not work properly in
> zooming,
> It seems that masked area is not refreshed after zooming on "WXAgg".
> I think "pcolorfast" works well on pylab.plot though.
>
> "pcolormesh" is the same while "pcolor"acts appropriately,
> Please look at the attached picture and try the sample program.
>
> My environment is;
>
>Windows XP
>Python 2.4
>WxPython 2.8
>matplotlib 0.91.2
>
> Noriko Minakawa
>
>
>
>
>
>
> ���#!/usr/bin/env python
>
> import numpy as npy
> import matplotlib.numerix as nx
>
> import matplotlib.numerix.ma as ma
> from matplotlib import cm, colors
>
> import matplotlib
>
> matplotlib.use('WXAgg')
> from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as
> FigureCanvas
> from matplotlib.backends.backend_wx import NavigationToolbar2Wx
>
> from matplotlib.figure import Figure
>
> import wx
>
> class CanvasFrame(wx.Frame):
>
> def __init__(self):
> wx.Frame.__init__(self,None,-1,
> 'CanvasFrame',size=(550,350))
>
> #self.SetBackgroundColour(wx.NamedColor("WHITE"))
>
> self.figure = Figure()
> ax1 = self.figure.add_subplot(121)
> ax2 = self.figure.add_subplot(122)
>
> x = npy.arange(0, 4.0, 0.05, dtype=float)
> y = npy.arange(0, 5.0, 0.05, dtype=float)
>
> z = npy.sqrt(x[npy.newaxis,:-1]**2 + y[:-1,npy.newaxis]**2)
>
> Z = ma.masked_where(z < 1, z)
>
> X, Y = npy.meshgrid(x,y)
>
> ax1.pcolor(X,Y,Z)
> ax2.pcolorfast(X,Y,Z)
>
> ax1.set_title('pcolor')
> ax2.set_title('pcolorfast')
>
> self.canvas = FigureCanvas(self, -1, self.figure)
>
> self.sizer = wx.BoxSizer(wx.VERTICAL)
> self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
> self.SetSizer(self.sizer)
> self.Fit()
>
> self.add_toolbar() # comment this out for no toolbar
>
>
> def add_toolbar(self):
> self.toolbar = NavigationToolbar2Wx(self.canvas)
> self.toolbar.Realize()
> tw, th = self.toolbar.GetSizeTuple()
> fw, fh = self.canvas.GetSizeTuple()
>
> self.toolbar.SetSize(wx.Size(fw, th))
> self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
>
> # update the axes menu on the toolbar
> self.toolbar.update()
>
> def OnPaint(self, event):
> self.canvas.draw()
>
> class App(wx.App):
>
> def OnInit(self):
> 'Create the main window and insert the custom frame'
> frame = CanvasFrame()
> frame.Show(True)
>
> return True
>
> app = App(0)
> app.MainLoop()
>
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[Matplotlib-users] A problem of masked "pcolorfast" on WXAgg
Hello List,
I found a problem that masked "pcolorfast" does not work properly in
zooming,
It seems that masked area is not refreshed after zooming on "WXAgg".
I think "pcolorfast" works well on pylab.plot though.
"pcolormesh" is the same while "pcolor"acts appropriately,
Please look at the attached picture and try the sample program.
My environment is;
Windows XP
Python 2.4
WxPython 2.8
matplotlib 0.91.2
Noriko Minakawa
<>#!/usr/bin/env python
import numpy as npy
import matplotlib.numerix as nx
import matplotlib.numerix.ma as ma
from matplotlib import cm, colors
import matplotlib
matplotlib.use('WXAgg')
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.backends.backend_wx import NavigationToolbar2Wx
from matplotlib.figure import Figure
import wx
class CanvasFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self,None,-1,
'CanvasFrame',size=(550,350))
#self.SetBackgroundColour(wx.NamedColor("WHITE"))
self.figure = Figure()
ax1 = self.figure.add_subplot(121)
ax2 = self.figure.add_subplot(122)
x = npy.arange(0, 4.0, 0.05, dtype=float)
y = npy.arange(0, 5.0, 0.05, dtype=float)
z = npy.sqrt(x[npy.newaxis,:-1]**2 + y[:-1,npy.newaxis]**2)
Z = ma.masked_where(z < 1, z)
X, Y = npy.meshgrid(x,y)
ax1.pcolor(X,Y,Z)
ax2.pcolorfast(X,Y,Z)
ax1.set_title('pcolor')
ax2.set_title('pcolorfast')
self.canvas = FigureCanvas(self, -1, self.figure)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
self.SetSizer(self.sizer)
self.Fit()
self.add_toolbar() # comment this out for no toolbar
def add_toolbar(self):
self.toolbar = NavigationToolbar2Wx(self.canvas)
self.toolbar.Realize()
tw, th = self.toolbar.GetSizeTuple()
fw, fh = self.canvas.GetSizeTuple()
self.toolbar.SetSize(wx.Size(fw, th))
self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
# update the axes menu on the toolbar
self.toolbar.update()
def OnPaint(self, event):
self.canvas.draw()
class App(wx.App):
def OnInit(self):
'Create the main window and insert the custom frame'
frame = CanvasFrame()
frame.Show(True)
return True
app = App(0)
app.MainLoop()
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Re: [Matplotlib-users] Curve fitting ...
I would recommend using "pylab.load" for reading the data. For example:
x, y = pylab.load("filename", unpack=True) # with other options as
required
sa6113 <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
09/02/2008 07:34 PM
To
matplotlib-users@lists.sourceforge.net
cc
Subject
[Matplotlib-users] Curve fitting ...
Hello there, I have a problem on curve fitting , would you please help me
?! I want to to develop a application that reads a text file with 2
columns of floating point data (as x and y) and performs a polynomial
curve fit of the data at the order specified by the end user and then
provides the curve-fit coefficients as well as the curve fit errors. My
problem is in curve fit errors , I want to abtain Max and L2-norm of
error. In addition I use "matplotlib.mlab module " and polyfit function
for computing polynomial curve fit. Regards.
View this message in context: Curve fitting ...
Sent from the matplotlib - users mailing list archive at Nabble.com.
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Re: [Matplotlib-users] Basemap 0.9.9 ImportError
Ryan May wrote: > Hi, > > I'm getting the following on Gentoo Linux: > #python hurrtracks.py > Traceback (most recent call last): > File "hurrtracks.py", line 7, in > from matplotlib.toolkits.basemap import Basemap as Basemap > File > "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/__init__.py", > line 1, in > from basemap import __doc__, __version__ > File > "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/basemap.py", > line 33, in > import pyproj, sys, os, math, dbflib > File > "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/pyproj.py", > line 49, in > from _geod import Geod as _Geod > ImportError: > /usr/lib64/python2.5/site-packages/matplotlib/toolkits/basemap/_geod.so: > undefined symbol: pj_errno > > Any clues as to why this would be happening? As far as I can tell, > pj_errno would be in Proj, which basemap has a version of internally. > > Ryan > > Ryan: Nothing comes immediately to mind - unless something went wrong with your build.Could you rebuild basemap and send me the a log of the build off-list? -Jeff -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX: (303)497-6449 NOAA/OAR/PSD R/PSD1Email : [EMAIL PROTECTED] 325 BroadwayOffice : Skaggs Research Cntr 1D-124 Boulder, CO, USA 80303-3328 Web: http://tinyurl.com/5telg - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Basemap 0.9.9 ImportError
Hi, I'm getting the following on Gentoo Linux: #python hurrtracks.py Traceback (most recent call last): File "hurrtracks.py", line 7, in from matplotlib.toolkits.basemap import Basemap as Basemap File "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/__init__.py", line 1, in from basemap import __doc__, __version__ File "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/basemap.py", line 33, in import pyproj, sys, os, math, dbflib File "/usr/lib/python2.5/site-packages/matplotlib/toolkits/basemap/pyproj.py", line 49, in from _geod import Geod as _Geod ImportError: /usr/lib64/python2.5/site-packages/matplotlib/toolkits/basemap/_geod.so: undefined symbol: pj_errno Any clues as to why this would be happening? As far as I can tell, pj_errno would be in Proj, which basemap has a version of internally. Ryan -- Ryan May Graduate Research Assistant School of Meteorology University of Oklahoma - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Create powerpoint slide and/or presentation from script?
On Mon, 11 Feb 2008, Ted Drain apparently wrote: > Is econpy still under development? Yes. Primarily during summers. ;-) New developers and other contributors are welcome. Cheers, Alan Isaac - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] font
Mike -- thanks for your response. I thought I had tried this and it didn't work. I guess I didn't I just tried the following equivalent approach: ML.rcParams['font.family'] = 'serif' ML.rcParams['font.serif'] = ['Cambria Math'] + ML.rcParams['font.serif'] and it worked like a charm. Thanks again. Michael Droettboom <[EMAIL PROTECTED]> wrote: > You shouldn't edit rcsetup.py directly -- that is part of the matplotlib > source code. Instead, you should edit the matplotlibrc settings file. > > In there, you'll actually want to change two settings: > > 1) Add Cambria to the front of the font.serif list > 2) Set "font.family" to "serif", so that mpl will use that list. > > Hope this helps, > Mike > > [EMAIL PROTECTED] wrote: > > I would like to be able to use Cambria font > > (http://en.wikipedia.org/wiki/Cambria_(typeface)) for all text on my > > charts. > > > > I am adding these charts to a MS Word 2007 document written in the same > > font. > > > > I tried to add Cambria as the fist string in rcsetup.py | defaultParams | > > 'font.serif'. That didn't work. Can I use this font for the charts? > > > > > > - > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2008. > > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > > ___ > > Matplotlib-users mailing list > > Matplotlib-users@lists.sourceforge.net > > 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 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] needed grp2idx
s_pushparaj <[EMAIL PROTECTED]> writes: > I am working to plot and compare distributions. For that I require the > grp2idx.m file to run boxplotC.m. Kindly help me get the request m file. It looks like you got the wrong list. This list is for discussing matplotlib, a Python plotting package. You refer to "m files", by which I suppose you mean Matlab code. You can find Matlab code at http://www.mathworks.com/matlabcentral/ -- Jouni K. Seppänen http://www.iki.fi/jks - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] needed grp2idx
Dear list I am working to plot and compare distributions. For that I require the grp2idx.m file to run boxplotC.m. Kindly help me get the request m file. with thanks Pushparaj -- View this message in context: http://www.nabble.com/needed-grp2idx-tp15412798p15412798.html Sent from the matplotlib - users mailing list archive at Nabble.com. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Curve fitting ...
Hello there, I have a problem on curve fitting , would you please help me ?! I want to to develop a application that reads a text file with 2 columns of floating point data (as x and y) and performs a polynomial curve fit of the data at the order specified by the end user and then provides the curve-fit coefficients as well as the curve fit errors. My problem is in curve fit errors , I want to abtain Max and L2-norm of error. In addition I use "matplotlib.mlab module " and polyfit function for computing polynomial curve fit. Regards. -- View this message in context: http://www.nabble.com/Curve-fitting-...-tp15369630p15369630.html Sent from the matplotlib - users mailing list archive at Nabble.com. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Create powerpoint slide and/or presentation from script?
Thanks! Is econpy still under development? > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Alan G Isaac > Sent: Monday, February 11, 2008 10:00 AM > To: matplotlib-users@lists.sourceforge.net > Subject: Re: [Matplotlib-users] Create powerpoint slide and/or > presentation from script? > > On Mon, 11 Feb 2008, Ted Drain apparently wrote: > > Does anyone know of a way to create a powerpoint slide from a plot? > > http://code.google.com/p/econpy/source/browse/trunk/utilities/mso. > py> > > hth, > Alan Isaac > > > > > --- > -- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Create powerpoint slide and/or prese ntation from script?
On Mon, 11 Feb 2008, Ted Drain apparently wrote: > Does anyone know of a way to create a powerpoint slide from a plot? http://code.google.com/p/econpy/source/browse/trunk/utilities/mso.py> hth, Alan Isaac - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Create powerpoint slide and/or presentation from script?
Does anyone know of a way to create a powerpoint slide from a plot? I'm assuming that it's possible to have a script that savse a PNG of the plot and then use a VB (or preferably python) script to create a slide (or append that slide to an existing presentation). I've google'ed around but I'm having trouble finding a decent example of doing this on the web. Any examples would be greatly appreciated. Thanks, Ted - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to get current value of xlim/ylim?
Slackenerny <[EMAIL PROTECTED]> writes: >>>graph = f.add_subplot(...) > I could help myself with >> graph.get_xlim() > So, how could I have helped myself, without annoying you? ;) The commands getp(graph) and setp(graph) might have helped. -- Jouni K. Seppänen http://www.iki.fi/jks - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to get current value of xlim/ylim?
Hello Heiko - dir(graph) would at least have given you a list of the functions and attributes, so you may have been able to spot the get_xlim function. I use that a lot, Mark > > -- > > Date: Mon, 11 Feb 2008 14:14:03 +0100 > From: Slackenerny <[EMAIL PROTECTED]> > Subject: Re: [Matplotlib-users] How to get current value of xlim/ylim? > To: matplotlib-users@lists.sourceforge.net > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=iso-8859-15 > > Hi, > I could help myself with > > graph.get_xlim() > which I found after finally guessing the right expressions for Google, > but I wonder how I could have found it in the help() output... > I've been searching that for quite sometime and didn't come up with > anything... > So, how could I have helped myself, without annoying you? ;) > > best wishes > > - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] aspect_ratio in combination with sharex
On Feb 11, 2008 2:35 PM, Michael Droettboom <[EMAIL PROTECTED]> wrote: > Before I look into this further: what version of mpl are you using? > I am using 0.91.2 using the win32 installer for Python 2.4. Thanks for looking into this, Mark - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] aspect_ratio in combination with sharex
Before I look into this further: what version of mpl are you using?
Mark Bakker wrote:
> I seem to have tracked down the problem.
> After calling the aspect_ratio function, the data limits don't get set.
> When a new axis with sharex is called, it gets the old data limits.
> After I call draw() or ax.draw() the datalimit gets set correctly.
> And creating a subplot with sharex works fine.
> Maybe the datalimit needs to be set at the end of the aspect_ratio function?
> (I presume that is part of the draw() command)
> Mark
>
> from pylab import *
>
> x,y = meshgrid(linspace(0,5,5),linspace(0,5,5))
>
> figure()
> ax = subplot(211)
> ax.contour(x,y,x)
> ax.set_aspect('equal',adjustable='datalim')
> print ax.get_xlim() # Prints 0 to 5 while datalimit is much larger
> draw()
> print ax.get_xlim() # Now datalimit is correct and sharex works
> ax2 = subplot(212,sharex=ax)
> draw()
>
> On Feb 11, 2008 9:56 AM, Mark Bakker <[EMAIL PROTECTED]
> > wrote:
>
> Hello -
>
> I have a hard time getting aspect_ratio to work correctly with sharex.
> This used to work quite a while ago, and has been broken for a long
> time (or at least I don't know how to get it to work)
> But I finally found the time to put a simple example together to
> determine if I do something wrong, or whether this can be fixed easily.
>
> When I make a small contour plot setting the aspect ratio equal
> works fine:
>
> from pylab import *
>
> x,y = meshgrid(linspace(0,5,5),linspace(0,5,5))
>
> figure()
> ax = subplot(211)
> ax.contour(x,y,x)
> ax.set_aspect('equal',adjustable='datalim')
> draw()
>
> Note that the datalim on the x-axis is expanded, as the data limit
> on the y-axis is the determining factor.
>
> If I now try to do the same thing while linking the x-axis of a
> second subplot to the first one, then
> the same call to set_aspect changes the data limit on the y-axis
> while keeping the x-axis fixed.
> That seems inconsistent and is not the behavior I want:
>
> figure()
> ax = subplot(211)
> ax.contour(x,y,x)
> ax2 = subplot(212,sharex=ax)
> ax.set_aspect('equal',adjustable='datalim')
> draw()
>
> Any idea what I am doing wrong?
>
> Thanks, Mark
>
>
>
>
>
> -
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
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>
>
>
>
> ___
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--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA
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Re: [Matplotlib-users] font
You shouldn't edit rcsetup.py directly -- that is part of the matplotlib source code. Instead, you should edit the matplotlibrc settings file. In there, you'll actually want to change two settings: 1) Add Cambria to the front of the font.serif list 2) Set "font.family" to "serif", so that mpl will use that list. Hope this helps, Mike [EMAIL PROTECTED] wrote: > I would like to be able to use Cambria font > (http://en.wikipedia.org/wiki/Cambria_(typeface)) for all text on my charts. > > I am adding these charts to a MS Word 2007 document written in the same font. > > I tried to add Cambria as the fist string in rcsetup.py | defaultParams | > 'font.serif'. That didn't work. Can I use this font for the charts? > > > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > 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 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] How to get current value of xlim/ylim?
Hi, I could help myself with > graph.get_xlim() which I found after finally guessing the right expressions for Google, but I wonder how I could have found it in the help() output... I've been searching that for quite sometime and didn't come up with anything... So, how could I have helped myself, without annoying you? ;) best wishes > Hello List, > assume I'm creating a plot via >>f = Figure(figsize=(5,4), dpi=100) >>graph = f.add_subplot(111, autoscale_on=False, xlim=[4,50], ybound=-2) >>graph.plot(x,y,"g--o", ms=5) > then the user zooms around a little does this and that. > Now I want to draw a second plot, which uses the new xlim and ylim > values from the old plot (i.e. has the same scaling). How can read out > those values? > best wishes > heiko -- Mit freundlichen Grüßen Slackenerny mailto:[EMAIL PROTECTED] - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] How to get current value of xlim/ylim?
Hello List, assume I'm creating a plot via >f = Figure(figsize=(5,4), dpi=100) >graph = f.add_subplot(111, autoscale_on=False, xlim=[4,50], ybound=-2) >graph.plot(x,y,"g--o", ms=5) then the user zooms around a little does this and that. Now I want to draw a second plot, which uses the new xlim and ylim values from the old plot (i.e. has the same scaling). How can read out those values? best wishes heiko - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] aspect_ratio in combination with sharex
I seem to have tracked down the problem.
After calling the aspect_ratio function, the data limits don't get set.
When a new axis with sharex is called, it gets the old data limits.
After I call draw() or ax.draw() the datalimit gets set correctly.
And creating a subplot with sharex works fine.
Maybe the datalimit needs to be set at the end of the aspect_ratio function?
(I presume that is part of the draw() command)
Mark
from pylab import *
x,y = meshgrid(linspace(0,5,5),linspace(0,5,5))
figure()
ax = subplot(211)
ax.contour(x,y,x)
ax.set_aspect('equal',adjustable='datalim')
print ax.get_xlim() # Prints 0 to 5 while datalimit is much larger
draw()
print ax.get_xlim() # Now datalimit is correct and sharex works
ax2 = subplot(212,sharex=ax)
draw()
On Feb 11, 2008 9:56 AM, Mark Bakker <[EMAIL PROTECTED]> wrote:
> Hello -
>
> I have a hard time getting aspect_ratio to work correctly with sharex.
> This used to work quite a while ago, and has been broken for a long time
> (or at least I don't know how to get it to work)
> But I finally found the time to put a simple example together to determine
> if I do something wrong, or whether this can be fixed easily.
>
> When I make a small contour plot setting the aspect ratio equal works
> fine:
>
> from pylab import *
>
> x,y = meshgrid(linspace(0,5,5),linspace(0,5,5))
>
> figure()
> ax = subplot(211)
> ax.contour(x,y,x)
> ax.set_aspect('equal',adjustable='datalim')
> draw()
>
> Note that the datalim on the x-axis is expanded, as the data limit on the
> y-axis is the determining factor.
>
> If I now try to do the same thing while linking the x-axis of a second
> subplot to the first one, then
> the same call to set_aspect changes the data limit on the y-axis while
> keeping the x-axis fixed.
> That seems inconsistent and is not the behavior I want:
>
> figure()
> ax = subplot(211)
> ax.contour(x,y,x)
> ax2 = subplot(212,sharex=ax)
> ax.set_aspect('equal',adjustable='datalim')
> draw()
>
> Any idea what I am doing wrong?
>
> Thanks, Mark
>
>
-
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[Matplotlib-users] aspect_ratio in combination with sharex
Hello -
I have a hard time getting aspect_ratio to work correctly with sharex.
This used to work quite a while ago, and has been broken for a long time (or
at least I don't know how to get it to work)
But I finally found the time to put a simple example together to determine
if I do something wrong, or whether this can be fixed easily.
When I make a small contour plot setting the aspect ratio equal works fine:
from pylab import *
x,y = meshgrid(linspace(0,5,5),linspace(0,5,5))
figure()
ax = subplot(211)
ax.contour(x,y,x)
ax.set_aspect('equal',adjustable='datalim')
draw()
Note that the datalim on the x-axis is expanded, as the data limit on the
y-axis is the determining factor.
If I now try to do the same thing while linking the x-axis of a second
subplot to the first one, then
the same call to set_aspect changes the data limit on the y-axis while
keeping the x-axis fixed.
That seems inconsistent and is not the behavior I want:
figure()
ax = subplot(211)
ax.contour(x,y,x)
ax2 = subplot(212,sharex=ax)
ax.set_aspect('equal',adjustable='datalim')
draw()
Any idea what I am doing wrong?
Thanks, Mark
-
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___
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