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Re: [Matplotlib-users] Hiding data via legend
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From: Jae-Joon L. <lee...@gm...> - 2009-09-24 04:28:21
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On Wed, Sep 23, 2009 at 3:27 PM, butterw <bu...@gm...> wrote: > > Hi, > > pickers work great to make matplotlib plots more interactive/general user > friendly. > > On the subject of the legend_picker.py example, I was wondering if it was > possible to combine both a legend picker and a line picker in the same plot. > From what I gather they will both use the same onpick event callback. > > So my question is : How do I discriminate between a pick on the legend from > a pick on a line ? The event.artist is a line2D in both cases. As demonstrated in the above example, leg.get_lines() gives you the list of lines inside the legend. The list of original lines is kept in ax.lines. So, you can check in which list the given artist is. Regards, -JJ > > > > > > > John Hunter-4 wrote: >> >> On Mon, Aug 3, 2009 at 11:38 PM, Gökhan Sever<gok...@gm...> >> wrote: >>> Hello, >>> >>> I was wondering if it is possible to hide some data on figures using a >>> say >>> right click option to any of the legend entry and make it temporarily >>> hidden/visible to better analyse the rest of the data? >>> >>> Check this screenshot for example: >>> >>> http://img25.imageshack.us/img25/9427/datahiding.png >>> >>> The red data clutters the rest of the figure, and I would like to be able >>> to >>> hide it temporarily so that I can investigate the other two relations >>> more >>> easily. >>> >>> Any ideas? or alternative solutions? >> >> It's a nice idea, and should be doable with the pick interface we have >> for all mpl artists. Unfortunately, there were a few problems in the >> legend implementation which blocked the pick events from hitting the >> proxy lines they contained. I just made a few changes to mpl svn HEAD >> to support this, and added a new example. >> >> examples/event_handling/legend_picking.py >> >> which I'll include below. JJ could you review the changes to legend.py? >> >> Instructions for checking out svn are at:: >> >> >> http://matplotlib.sourceforge.net/faq/installing_faq.html#install-from-svn >> >> Here is the example: >> >> """ >> Enable picking on the legend to toggle the legended line on and off >> """ >> import numpy as np >> import matplotlib.pyplot as plt >> >> t = np.arange(0.0, 0.2, 0.1) >> y1 = 2*np.sin(2*np.pi*t) >> y2 = 4*np.sin(2*np.pi*2*t) >> >> fig = plt.figure() >> ax = fig.add_subplot(111) >> >> line1, = ax.plot(t, y1, lw=2, color='red', label='1 hz') >> line2, = ax.plot(t, y2, lw=2, color='blue', label='2 hz') >> >> leg = ax.legend(loc='upper left', fancybox=True, shadow=True) >> leg.get_frame().set_alpha(0.4) >> >> >> lines = [line1, line2] >> lined = dict() >> for legline, realine in zip(leg.get_lines(), lines): >> legline.set_picker(5) # 5 pts tolerance >> lined[legline] = realine >> >> def onpick(event): >> legline = event.artist >> realline = lined[legline] >> vis = realline.get_visible() >> realline.set_visible(not vis) >> fig.canvas.draw() >> >> fig.canvas.mpl_connect('pick_event', onpick) >> >> plt.show() >> >> ------------------------------------------------------------------------------ >> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 >> 30-Day >> trial. Simplify your report design, integration and deployment - and focus >> on >> what you do best, core application coding. Discover what's new with >> Crystal Reports now. http://p.sf.net/sfu/bobj-july >> _______________________________________________ >> Matplotlib-users mailing list >> Mat...@li... >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> >> > > -- > View this message in context: http://www.nabble.com/Hiding-data-via-legend-tp24802219p25531267.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > _______________________________________________ > Matplotlib-users mailing list > Mat...@li... > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > |
