[Matplotlib-users] lines with fixed pixel thickness
Dear users, I would like to draw lines with fixed pixel thickness, for example 1, 2, or 3 pixels, which remains 1 pixel, even if I zoom in and out the graph in my interactive application. How can I do this with matplotlib? I tried to set linewidth to 1 on creating LineCollection, but this creates too thick lines. If I set it to 0.25 or 0.1, for example, then some lines on the screen are thin, but some line instances are simply missing (not visible), depending on the zoom. Thank you for your help, János -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] plot with discontinuous x-axis
Hi there, i'd like to plot a data series with signal values over timestamps, what works perfectly. But if I want to display 2 series with different time domains, theres a gap in between. For example my first set of data is from time (x) 1-3 and the second from 7-8. If I send the mixed array to the plot, I will receive something like that: y|x x x x x x x| 0 1 2 3 4 5 6 7 8 9 10 11 But if there is considerably more time between the to data sets, it soon will look confusing. What i need is a graph over this: y| x x x x x x x| 1 2 3 7 8 9 Of course I could do this with 2 subplots, but i want to scroll over a whole set of data. Is it possible wih matplotlib, or is there a workaround? Thanks! Hubert -- View this message in context: http://old.nabble.com/plot-with-discontinuous-x-axis-tp32155499p32155499.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot with discontinuous x-axis
On Thu, Jul 28, 2011 at 5:41 AM, denoise hubert.g...@partner.bmw.de wrote: Hi there, i'd like to plot a data series with signal values over timestamps, what works perfectly. But if I want to display 2 series with different time domains, theres a gap in between. For example my first set of data is from time (x) 1-3 and the second from 7-8. If I send the mixed array to the plot, I will receive something like that: y| x x x x x x x| 0 1 2 3 4 5 6 7 8 9 10 11 But if there is considerably more time between the to data sets, it soon will look confusing. What i need is a graph over this: y| x x x x x x x| 1 2 3 7 8 9 Of course I could do this with 2 subplots, but i want to scroll over a whole set of data. Is it possible wih matplotlib, or is there a workaround? There are a couple examples here: http://stackoverflow.com/questions/5656798/python-matplotlib-is-there-a-way-to-make-a-discontinuous-axis Warren Thanks! Hubert -- View this message in context: http://old.nabble.com/plot-with-discontinuous-x-axis-tp32155499p32155499.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] how can i use utf-8 or just how can i plot the datetime in local settings ?
This is a bug in that matplotlib is not reading the preferred encoding correctly, because doing so has undesired side effects in some cases. An easy workaround is to add the following to the top of your script (before importing matplotlib): import locale locale.setlocale(locale.LC_ALL, '') Note, you will also need to select a font that has Cyrillic characters. The default font shipped with matplotlib Vera Sans does not, but you can use its more-Unicode-complete sibling DejaVu Sans (installed on most Linux systems by default). Interestingly, another use had a similar problem quite recently. The following branch of matplotlib may also fix your problem: https://github.com/mdboom/matplotlib/tree/locale_formatting To test this, you would need to build it from source, and then set the rcParam axes.formatter.use_locale to True. Cheers, Mike On 08/01/2011 12:23 AM, Alexey Uimanov wrote: Here the code #!/usr/bin/env python from pylab import figure, show from matplotlib.dates import AutoDateLocator, AutoDateFormatter, drange, DateFormatter import datetime import random dates = drange(datetime.datetime(2010, 1, 1), datetime.datetime(2010, 12,31), datetime.timedelta(days = 1)) opens = map(lambda a: random.random(), dates) fig = figure() ax = fig.add_subplot(111) ax.plot_date(dates, opens, '-') majloc = AutoDateLocator() majform = AutoDateFormatter(majloc) ax.xaxis.set_major_locator(majloc) ax.xaxis.set_major_formatter(majform) ax.autoscale_view() ax.grid(True) fig.autofmt_xdate() show() It is just the same code as date_demo1.py from examples directory with some modifications My current locale is ru_RU.UTF-8 and i want plot the date ruller along X axis in format of my locale, with russian names of months. I can not do this because of this error when printing the chart Traceback (most recent call last): File /usr/lib/python2.7/site-packages/matplotlib/backends/backend_gtk.py, line 394, in expose_event self._render_figure(self._pixmap, w, h) File /usr/lib/python2.7/site-packages/matplotlib/backends/backend_gtkagg.py, line 75, in _render_figure FigureCanvasAgg.draw(self) File /usr/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py, line 394, in draw self.figure.draw(self.renderer) File /usr/lib/python2.7/site-packages/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/python2.7/site-packages/matplotlib/figure.py, line 798, in draw func(*args) File /usr/lib/python2.7/site-packages/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/python2.7/site-packages/matplotlib/axes.py, line 1946, in draw a.draw(renderer) File /usr/lib/python2.7/site-packages/matplotlib/artist.py, line 55, in draw_wrapper draw(artist, renderer, *args, **kwargs) File /usr/lib/python2.7/site-packages/matplotlib/axis.py, line 971, in draw tick_tups = [ t for t in self.iter_ticks()] File /usr/lib/python2.7/site-packages/matplotlib/axis.py, line 907, in iter_ticks majorLabels = [self.major.formatter(val, i) for i, val in enumerate(majorLocs)] File /usr/lib/python2.7/site-packages/matplotlib/dates.py, line 486, in __call__ return self._formatter(x, pos) File /usr/lib/python2.7/site-packages/matplotlib/dates.py, line 336, in __call__ return self.strftime(dt, self.fmt) File /usr/lib/python2.7/site-packages/matplotlib/dates.py, line 362, in strftime return cbook.unicode_safe(dt.strftime(fmt)) File /usr/lib/python2.7/site-packages/matplotlib/cbook.py, line 41, in unicode_safe else: return unicode(s, preferredencoding) UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 0: ordinal not in range(128) When lauching this with LANG=C everythig works but datetime prints in english locale. Version of matplotlib is 1.0.1 What am i doing wrong ? -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Michael Droettboom Science Software Branch Space Telescope Science Institute Baltimore, Maryland, USA -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net
Re: [Matplotlib-users] lines with fixed pixel thickness
On Fri, Jul 29, 2011 at 4:51 PM, Mátyás János mjan...@gmail.com wrote: Dear users, I would like to draw lines with fixed pixel thickness, for example 1, 2, or 3 pixels, which remains 1 pixel, even if I zoom in and out the graph in my interactive application. How can I do this with matplotlib? I tried to set linewidth to 1 on creating LineCollection, but this creates too thick lines. If I set it to 0.25 or 0.1, for example, then some lines on the screen are thin, but some line instances are simply missing (not visible), depending on the zoom. Thank you for your help, János Janos, This sounds like some bugs that may have been fixed at some point. Which version of matplotlib are you using, and which backend? Ben Root -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Autoscaling after removing lines.
Hy all, I recently had a pretty hard time trying to figure out how to properly autoscale a plot after removing a line (see attached script). Finally I found at [1] that I have to explicitly refresh the axes dataLim before autoscaling. In [1] John Hunter says that computing the proper dataLim can be complicated if there are several types of artists in the axes, like polygons and collections an that [it] would be useful to have an Axes method like auto_datalim to for the datalim to readjust to all the current data. My question is whether such a function has been implemented. Besides any suggestions about how to deal with this are welcome. I just need to adjust to lines right now but this may change in the future. Best regards Goyo [1] http://old.nabble.com/Removing-a-line-from-a-plot-td7249600.html autoscaling_issues.py Description: Binary data -- BlackBerryreg; DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos much more. Register early save! http://p.sf.net/sfu/rim-blackberry-1___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] close gtk2 figure without main_quit() call
I am writing gtk2 application on python, I need to plot a chart in separate window and i just use this code def matplot_print(self, print_values): \brief print data by matplotlib and shw the figure \param print_values [(name - is a string, [(datetime, value)] - is a list of data to plot)] - list of charts to plot fig = plt.figure() ax = fig.add_subplot(111) names = map(lambda a: a[0], print_values) lines = map(lambda chart: ax.plot_date(map(lambda chd: chd[0], chart[1]), map(lambda chy: chy[1], chart[1]), '-'), print_values) plt.figlegend(lines, names, 'upper left') majloc = AutoDateLocator() majform = AutoDateFormatter(majloc) ax.xaxis.set_major_locator(majloc) ax.xaxis.set_major_formatter(majform) ax.autoscale_view() ax.grid(True) fig.autofmt_xdate() fig.show() The figure is showing and everything works before closing the window of figure. It seems that figure call gtk.main_quit() when closing it's window. How to override this behaviour ? -- BlackBerryreg; DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos much more. Register early save! http://p.sf.net/sfu/rim-blackberry-1 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Matlab-like Cursor Mode
Hi All, Something I use a lot in Matlab is probing points from a plot, basically clicking to select the nearest point and show a tooltip with the x and y values. I didn't manage to reproduce this exactly with matplotlib, but I found the code from the link below which is close enough to what I need: http://stackoverflow.com/questions/4652439/is-there-a-matplotlib-equivalent-of-matlabs-datacursormode Is there a better way, or something along those lines is the best option? Thanks in advance, Tudor -- BlackBerryreg; DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos much more. Register early save! http://p.sf.net/sfu/rim-blackberry-1 ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] plot with discontinuous x-axis
Warren Weckesser, on 2011-08-01 09:49, wrote: There are a couple examples here: http://stackoverflow.com/questions/5656798/python-matplotlib-is-there-a-way-to-make-a-discontinuous-axis I was going to say: Damn those stackoverflow cool kids, reinventing the wheel when we already have an example for this in git: https://github.com/matplotlib/matplotlib/blob/master/examples/pylab_examples/broken_axis.py but now I see that's exactly the example that's the top answer, there, heh. best, -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7 signature.asc Description: Digital signature -- BlackBerryreg; DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos much more. Register early save! http://p.sf.net/sfu/rim-blackberry-1___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
