Re: [Matplotlib-users] [newbie] live plots of multiple lines
Hello Chris, Hello list, On Thursday 27 March 2008 18:26, Chris Withers wrote: Matthias Michler wrote: I'm not sure that I understand you correctly. The code I refering is the one which I attached some mails ago. The following works for me: Ah, okay, to get the problem I was having, change your script as follows: - from pylab import * from datetime import datetime from time import sleep ion() # interactive mode 'on' figure() ax = subplot(111, autoscale_on=True) x, y = [datetime.now()], [0] line = plot(x, y, label=my_data)[0] # get the line-object as the first element # of the tuple returned by plot legend() for i in arange(30): x.append(datetime.now()) # append new values y.append(i**2) line.set_data(x,y)# reset data ax.relim()# reset axes limits ax.autoscale_view() # rescale axes draw()# redraw current figure sleep(0.3)# wait 0.3 seconds ioff() show() So, basically make the x axis time instead of numbers. I think the problem is actually that the daets are quite long in their format. If they were rotated through 90 degress it'd likely be fine. How would I do this? I'm not sure it is the easiest way, but it works for me: for label in ax.xaxis.get_majorticklabels(): label.set_rotation(+90) Also, how would I get this kind of updating with bar charts or errorbars? In the case of bar charts and errorbars it is quite difficult to reset the data. e.g. errobar (from the docstring) Return value is a length 3 tuple. The first element is the Line2D instance for the y symbol lines. The second element is a list of error bar cap lines, the third element is a list of line collections for the horizontal and vertical error ranges I think it is quite expensive to reset all x/ydata of the lines by yourself and I have no idea how to reset data of line collections. I would replot the errorbars, but maybe somebody else knows a good way to reset the data of errorbars. regards Matthias - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] prctile not interpolating
You can use the scipy version: |~|[10]from scipy.stats import stats |~|[11]stats.scoreatpercentile(x,50) Out [11]:7.5 Le vendredi 28 mars 2008, David Simpson a écrit : I would like to find percentiles, with interpolation where needed, but the matplotlib prctile seems to be different to matlab in this respect: In [1]: x = array([ 3.0, 5.0, 7.0, 8.0, 9.0, 11.0 ]) In [2]: median(x) Out[2]: 7.5 In [3]: prctile(x,50) Out[3]: 8.0 is there a function available which does include interpolation, or should I just write my own? (I'd also like 10th and 90th percentiles for example). Thanks, Dave - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplac e ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Lionel Roubeyrie - [EMAIL PROTECTED] Chargé d'études et de maintenance LIMAIR - la Surveillance de l'Air en Limousin http://www.limair.asso.fr - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [newbie] live plots of multiple lines
Matthias Michler wrote: I'm not sure it is the easiest way, but it works for me: for label in ax.xaxis.get_majorticklabels(): label.set_rotation(+90) Yes, that's what I was using, just wondered if there was a better way... Also, how would I get this kind of updating with bar charts or errorbars? In the case of bar charts and errorbars it is quite difficult to reset the data. Oh, I also meant to ask about scatter, can the data be easilly reset there? For bar charts and errorbar plots, I agree ;-) How would I just blank the figure and replot? (I have just been calling errorbar lots, but I'm guessing that if I add a legend, I'll have one entry for each time I called errorbar :-S) cheers, Chris -- Simplistix - Content Management, Zope Python Consulting - http://www.simplistix.co.uk - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [newbie] live plots of multiple lines
On Friday 28 March 2008 13:57, Chris Withers wrote: Matthias Michler wrote: I'm not sure it is the easiest way, but it works for me: for label in ax.xaxis.get_majorticklabels(): label.set_rotation(+90) Yes, that's what I was using, just wondered if there was a better way... At least I don't know a better way, but I'm not an expert. Also, how would I get this kind of updating with bar charts or errorbars? In the case of bar charts and errorbars it is quite difficult to reset the data. Oh, I also meant to ask about scatter, can the data be easilly reset there? Scatter returns a line collection and I don't know if there is a method to reset their x/ydata. For bar charts and errorbar plots, I agree ;-) How would I just blank the figure and replot? I'm not sure, but maybe clf() to clear the whole figure and cla() to clear the axes does the job. (I have just been calling errorbar lots, but I'm guessing that if I add a legend, I'll have one entry for each time I called errorbar :-S) regards, Matthias - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Polygon masking possible?
I am not sure how should I use it any hints? From: [EMAIL PROTECTED] To: matplotlib-users@lists.sourceforge.net Subject: Re: [Matplotlib-users] Polygon masking possible? Date: Fri, 14 Mar 2008 18:03:13 + CC: [EMAIL PROTECTED] On Friday 14 March 2008 16:44:54 Chiara Caronna wrote: I tried ds9 and It looks like this is what I would like to do (though I couldn't try funtools, but what you describe is good). DO you think it is possible to make something like this with matplotlib? Thanks a lot for your The initiating thread (from January) had some suggestions. In particular, some code that does this from Rob Hetland: Hope that helps, Jose _ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vistamkt=en-USform=QBRE - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] [newbie] live plots of multiple lines
On Fri, Mar 28, 2008 at 8:20 AM, Matthias Michler
[EMAIL PROTECTED] wrote:
On Friday 28 March 2008 13:57, Chris Withers wrote:
Matthias Michler wrote:
I'm not sure it is the easiest way, but it works for me:
for label in ax.xaxis.get_majorticklabels():
label.set_rotation(+90)
Yes, that's what I was using, just wondered if there was a better way...
At least I don't know a better way, but I'm not an expert.
Also, how would I get this kind of updating with bar charts or
errorbars?
In the case of bar charts and errorbars it is quite difficult to reset
the data.
Oh, I also meant to ask about scatter, can the data be easilly reset there?
Scatter returns a line collection and I don't know if there is a method to
reset their x/ydata.
We do not have good built in support for this kind of thing (though we
should add it). One approach is to write a custom artist, as in this
example. I'm using GTK only for the idle handling callback, but you
can use whatever approach works for you. The important part is the
example showing how to write a custom artist for dynamic data:
import gtk
import numpy as np
import matplotlib
matplotlib.use('GTKAgg')
import matplotlib.pyplot as plt
import matplotlib.artist as artist
import matplotlib.colors as colors
import matplotlib.agg as agg
class DynamicMarkers(artist.Artist):
def __init__(self, buffersize=30):
artist.Artist.__init__(self)
self.buffersize = buffersize
self.x = []
self.y = []
self.count = 0
self.path = None
self.markersize = 10.
self.facecolor = colors.colorConverter.to_rgb('blue')
self.edgecolor = colors.colorConverter.to_rgb('black')
def add(self, x, y):
self.count+=1
self.x.append(x)
self.y.append(y)
if self.countself.buffersize:
del self.x[0]
del self.y[0]
def draw(self, renderer):
if self.axes is None:
raise RuntimeError('you must first add me to the axes')
if self.path is None:
# use square markers
side = renderer.points_to_pixels(self.markersize)
offset = side*0.5
path = agg.path_storage()
path.move_to(-offset, -offset)
path.line_to(-offset, offset)
path.line_to(offset, offset)
path.line_to(offset, -offset)
path.end_poly()
self.path = path
gc = renderer.new_gc()
self._set_gc_clip(gc) # Artist method
gc.set_foreground(self.edgecolor)
renderer.draw_markers(gc, self.path, self.facecolor, self.x,
self.y, self.get_transform())
fig = plt.figure()
ax = fig.add_subplot(111)
myline = DynamicMarkers(30)
ax.add_artist(myline)
ax.set_xlim(-20, 1)
ax.set_ylim(0,1)
def animate(*args):
i = animate.i
print 'animate', i
myline.add(i, np.random.rand())
ax.set_xlim(i-30, i+1)
fig.canvas.draw()
animate.i += 1
if animate.i200: return True
else: return False
gtk.idle_add(animate)
animate.i = 0
plt.show()
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Re: [Matplotlib-users] Setting font family in ticks not possible. Bug?
More complete:
I tried all permunations of backends. Now I stick to PS, because I use
matplotlib from commandline with scripts. The environment is debian/etch
with a current version of matplotlib (self compiled).
Try this script
from pylab import *
t = arange(0.0, 2.0, 0.01)
s = sin(2*pi*t)
plot(t, s)
grid(True)
# matlab handle graphics style
xticklines = getp(gca(), 'xticklines')
yticklines = getp(gca(), 'yticklines')
xgridlines = getp(gca(), 'xgridlines')
ygridlines = getp(gca(), 'ygridlines')
xticklabels = getp(gca(), 'xticklabels')
yticklabels = getp(gca(), 'yticklabels')
setp(xticklines, 'linewidth', 3)
setp(yticklines, 'linewidth', 3)
setp(xgridlines, 'linestyle', '-')
setp(ygridlines, 'linestyle', '-')
setp(yticklabels, 'color', 'r', fontsize='medium')
setp(xticklabels, 'color', 'r', fontsize='medium', family='sans-serif')
savefig('axprops_demo')
**
On my system the line
setp(xticklabels, 'color', 'r', fontsize='medium', family='sans-serif')
doesn't change the font family.
Best regards:
Gerolf
--
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Private: Klopstockstrasse 21 - 65187 Wiesbaden - Germany
Office: Room 46-332 - Erwin-Schrödinger-Str.46 - TU Kaiserslautern - Germany
Web: gerolf.ziegenhain.com
Tel.: +49-611-18840590
Fax: +49-611-18840599
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Re: [Matplotlib-users] Setting font family in ticks not possible. Bug?
Hi,
Thanks for all the replies! Of course it is not directly a bug. But
awkward. This is how I was finally able to change alle fonts and the
whole layout of the plot:
fig_width_pt = 246.0 # Get this from LaTeX using \showthe\columnwidth
inches_per_pt = 1.0/72.27 # Convert pt to inch
golden_mean = (sqrt(5)-1.0)/2.0 # Aesthetic ratio
fig_width = fig_width_pt*inches_per_pt # width in inches
fig_height = fig_width*golden_mean # height in inches
fig_size = [fig_width,fig_height]
params = {'backend': 'ps','axes.labelsize': 10,'text.fontsize':
10,'legend.fontsize': 10,'text.usetex':
True,'text.latex.preamble':[\usepackage{bm},\usepackage{textcomp}],
'figure.figsize': fig_size, 'font.family' : 'sans-serif', 'font.style':
'normal', 'font.weight':'normal',}
rcParams.update(params)
...
ffont = {'family':'sans-serif','fontsize':10,'weight':'bold'}
ax1=gca()
ax1.set_xticklabels(ax1.get_xticks(),ffont)
ax1.set_yticklabels(ax1.get_yticks(),ffont)
subplots_adjust(top=1-.13)
xticks(**ffont)
yticks(**ffont)
Best regards:
Gerolf
On Thu 27.Mar.08 14:54, Darren Dale wrote:
On Thursday 27 March 2008 01:27:28 pm Gerolf Ziegenhain wrote:
More complete:
I tried all permunations of backends. Now I stick to PS, because I use
matplotlib from commandline with scripts. The environment is debian/etch
with a current version of matplotlib (self compiled).
Try this script
from pylab import *
t = arange(0.0, 2.0, 0.01)
s = sin(2*pi*t)
plot(t, s)
grid(True)
# matlab handle graphics style
xticklines = getp(gca(), 'xticklines')
yticklines = getp(gca(), 'yticklines')
xgridlines = getp(gca(), 'xgridlines')
ygridlines = getp(gca(), 'ygridlines')
xticklabels = getp(gca(), 'xticklabels')
yticklabels = getp(gca(), 'yticklabels')
setp(xticklines, 'linewidth', 3)
setp(yticklines, 'linewidth', 3)
setp(xgridlines, 'linestyle', '-')
setp(ygridlines, 'linestyle', '-')
setp(yticklabels, 'color', 'r', fontsize='medium')
setp(xticklabels, 'color', 'r', fontsize='medium', family='sans-serif')
savefig('axprops_demo')
**
On my system the line
setp(xticklabels, 'color', 'r', fontsize='medium', family='sans-serif')
doesn't change the font family.
Do you use usetex? If you do, the mathtext is rendered using latex, and
latex renders mathtext in serif fonts.
Darren
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--
Dipl. Phys. Gerolf Ziegenhain
Web: http://gerolf.ziegenhain.com
Email: [EMAIL PROTECTED]
Fax: +49 611 18840599
Phone: +49 611 18840590
Office: Erwin-Schrödinger-Str. 46 / Room 46.332 / 67663 Kaiserslautern /
Germany
Private: Klopstockstr. 21 / 65187 Wiesbaden / Germany
-
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[Matplotlib-users] wxagg back-end bug on windows?
Hi all,
I'm having an odd issue with the wxAgg back-end:
windows XP
python 2.5.2 (from python.org)
wxPython 2.8.7.1 unicode (binary from wxPython.org)
MPL 0.91.2 (binary from MPl site)
when I run:
import matplotlib
matplotlib.use('wxagg')
import pylab
I get a popup dialog:
This application failed to start because wxmsw26uh_vc.dll was not found
It looks like it is looking for a wxPython2.6 dll, which it doesn't
find, because I'm running wxPython2.8
I'm guessing this binary was compiled against wxPython2.6, but I thought
the current wxAgg back-end didn't try to use the accelerated module for
wxPython2.8.
Any ideas?
By the way, there are a number of other small bugs cropping up in the
pylab window with wxagg too -- but I'll look at those once I solve this.
Is no one else using MPL with wxPython2.8?
-Chris
--
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Emergency Response Division
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Seattle, WA 98115 (206) 526-6317 main reception
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Re: [Matplotlib-users] wxagg back-end bug on windows?
Chris Barker wrote: Hi all, I'm having an odd issue with the wxAgg back-end: Update: If I remove: matplotlib/backends/_wxagg.pyd The problem goes away. It looks like that pyd is getting loaded even though I'm running wxPython2.8 However, now I get a non-valid png when I do savefig -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/ORR(206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [EMAIL PROTECTED] - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
