[Matplotlib-users] Lines and columns in legends
Jae-Joon hi, I am a newbie with matplolib. I need a horizontal legend because my figures are pretty wide and I need to automate the process of generating it. Since matplotlib does not support horizontal legends I am hacking around it. I modified your example below. So the following works: from matplotlib.pylab import * from matplotlib.legend import Legend from matplotlib.patches import Rectangle #fig = figure() ax = gca() pl_list = [] for i in range(10): pl, = ax.plot(random(10)) pl_list.append(pl) xleg,yleg= 0.5,0.5 l1 = Legend(ax, pl_list[0:1], 0, loc=1) hg1, wd1 = l1.get_frame().get_height(), l1.get_frame().get_width() l2 = Legend(ax, pl_list[1:2], 1, loc=1) hg2, wd2 = l2.get_frame().get_height(), l2.get_frame().get_width() l3 = Legend(ax, pl_list[2:3], 2, loc=1) hg3, wd3 = l3.get_frame().get_height(), l3.get_frame().get_width() l4 = Legend(ax, pl_list[3:4], 3, loc=1) hg4, wd4 = l4.get_frame().get_height(), l4.get_frame().get_width() total_height = hg1 total_width = wd1+wd2+wd3+wd4 print total_height, total_width l1 = Legend(ax, pl_list[0:1], 0, loc=(xleg, yleg)) l2 = Legend(ax, pl_list[1:2], 1, loc=(xleg+wd1/5, yleg)) l3 = Legend(ax, pl_list[2:3], 2, loc=(xleg+(wd1+wd2)/5, yleg)) l4 = Legend(ax, pl_list[3:4], 3, loc=(xleg+(wd1+wd2+wd3)/5, yleg)) l1.get_frame().set_visible(False) # make background frame of legends invisible l2.get_frame().set_visible(False) l3.get_frame().set_visible(False) l4.get_frame().set_visible(False) # make a large background frame rect = Rectangle((xleg, yleg), 0.45, 0.05, # adjust these values (in normalized axes coordinate) fc=w, ec=k, transform=ax.transAxes, zorder=4) ax.add_artist(rect) ax.add_artist(l1) ax.add_artist(l2) ax.add_artist(l3) ax.add_artist(l4) The basic idea is to create a legend with the line and label I need and then use its dimensions to create the background frame. The problem is that the height and width I get are in different units that the normalized axes coordinates and I do not know how to properly transfrom them which leads to the hacky /5 , otherwise the legends are off the figure. Any suggestions on how I can automate this part? Thanks in advance. Jae-Joon Lee Thu, 09 Oct 2008 12:21:56 -0700 Although I think it is possible to calculate the bounding box of the all legends automatically, Here is a manual way. from matplotlib.patches import Rectangle l1.get_frame().set_visible(False) # make background frame of legends invisible l2.get_frame().set_visible(False) # make a large background frame rect = Rectangle((0.05, 0.75), 0.3, 0.2, # adjust these values (in normalized axes coordinate) fc=w, ec=k, transform=ax.transAxes, zorder=4) ax.add_artist(rect) I hope this help, -JJ On Thu, Oct 9, 2008 at 2:43 PM, José Alexandre Nalon [EMAIL PROTECTED] wrote: Hello, Em Thursday 09 October 2008 13:46:52 Jae-Joon Lee escreveu: Meanwhile, you may try to make multiple legends as a posible workarounds. Thanks for your answer. That did the trick, and the figure looks more or less as I wanted. It would look exactly as I wanted if I could remove the border from the legends and draw a box around the legends. How could I do that? (I apologize if this seems trivial. I use matplotlib a lot, but standard functions always seem to do what I need, so I don't go deep in its behaviour). -- José Alexandre Nalon [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Lines and columns in legends
The recent version of the mpl now supports multi-column legend. http://matplotlib.sourceforge.net/examples/pylab_examples/legend_demo3.html Thus, it would be great if you to try the new version, and if your problem is still not solved, please report it again. Regards, -JJ On Sun, Apr 12, 2009 at 11:12 PM, Vasileios Kontorinis bkontori...@gmail.com wrote: Jae-Joon hi, I am a newbie with matplolib. I need a horizontal legend because my figures are pretty wide and I need to automate the process of generating it. Since matplotlib does not support horizontal legends I am hacking around it. I modified your example below. So the following works: from matplotlib.pylab import * from matplotlib.legend import Legend from matplotlib.patches import Rectangle #fig = figure() ax = gca() pl_list = [] for i in range(10): pl, = ax.plot(random(10)) pl_list.append(pl) xleg,yleg= 0.5,0.5 l1 = Legend(ax, pl_list[0:1], 0, loc=1) hg1, wd1 = l1.get_frame().get_height(), l1.get_frame().get_width() l2 = Legend(ax, pl_list[1:2], 1, loc=1) hg2, wd2 = l2.get_frame().get_height(), l2.get_frame().get_width() l3 = Legend(ax, pl_list[2:3], 2, loc=1) hg3, wd3 = l3.get_frame().get_height(), l3.get_frame().get_width() l4 = Legend(ax, pl_list[3:4], 3, loc=1) hg4, wd4 = l4.get_frame().get_height(), l4.get_frame().get_width() total_height = hg1 total_width = wd1+wd2+wd3+wd4 print total_height, total_width l1 = Legend(ax, pl_list[0:1], 0, loc=(xleg, yleg)) l2 = Legend(ax, pl_list[1:2], 1, loc=(xleg+wd1/5, yleg)) l3 = Legend(ax, pl_list[2:3], 2, loc=(xleg+(wd1+wd2)/5, yleg)) l4 = Legend(ax, pl_list[3:4], 3, loc=(xleg+(wd1+wd2+wd3)/5, yleg)) l1.get_frame().set_visible(False) # make background frame of legends invisible l2.get_frame().set_visible(False) l3.get_frame().set_visible(False) l4.get_frame().set_visible(False) # make a large background frame rect = Rectangle((xleg, yleg), 0.45, 0.05, # adjust these values (in normalized axes coordinate) fc=w, ec=k, transform=ax.transAxes, zorder=4) ax.add_artist(rect) ax.add_artist(l1) ax.add_artist(l2) ax.add_artist(l3) ax.add_artist(l4) The basic idea is to create a legend with the line and label I need and then use its dimensions to create the background frame. The problem is that the height and width I get are in different units that the normalized axes coordinates and I do not know how to properly transfrom them which leads to the hacky /5 , otherwise the legends are off the figure. Any suggestions on how I can automate this part? Thanks in advance. Jae-Joon Lee Thu, 09 Oct 2008 12:21:56 -0700 Although I think it is possible to calculate the bounding box of the all legends automatically, Here is a manual way. from matplotlib.patches import Rectangle l1.get_frame().set_visible(False) # make background frame of legends invisible l2.get_frame().set_visible(False) # make a large background frame rect = Rectangle((0.05, 0.75), 0.3, 0.2, # adjust these values (in normalized axes coordinate) fc=w, ec=k, transform=ax.transAxes, zorder=4) ax.add_artist(rect) I hope this help, -JJ On Thu, Oct 9, 2008 at 2:43 PM, José Alexandre Nalon [EMAIL PROTECTED] wrote: Hello, Em Thursday 09 October 2008 13:46:52 Jae-Joon Lee escreveu: Meanwhile, you may try to make multiple legends as a posible workarounds. Thanks for your answer. That did the trick, and the figure looks more or less as I wanted. It would look exactly as I wanted if I could remove the border from the legends and draw a box around the legends. How could I do that? (I apologize if this seems trivial. I use matplotlib a lot, but standard functions always seem to do what I need, so I don't go deep in its behaviour). -- José Alexandre Nalon [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Lines and columns in legends
Hello, Is there an easy way to make a legend with multiple lines and columns? I need 8 plots in the same figure, and the legend takes a lot of space. I believe that if I could orient the legend in multiple lines and columns (say, 2 lines with four columns each), I could save a lot of space, giving more room to the plots. Any other suggestion would be useful. Thanks in advance. -- José Alexandre Nalon [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Lines and columns in legends
The current legend class does not support multiple columns. Eric Wertman once mentioned in this list that he would work on this feature, but I don't know the current status. A (partial) rewrite of the legend class which I plan to support multicolumns is in my TODO list but I haven't started it yet. Meanwhile, you may try to make multiple legends as a posible workarounds. For example, following code plots 10 lines and make two legends, each with 5 lines, one at upper left and one at upper right. ax = gca() pl_list = [] for i in range(10): pl, = ax.plot(random(10)) pl_list.append(pl) from matplotlib.legend import Legend l1 = Legend(ax, pl_list[:5], 01234, loc=2) l2 = Legend(ax, pl_list[5:], 56789, loc=1) #l1 = Legend(ax, pl_list[:5], 01234, loc=(0.02, 0.72)) #l2 = Legend(ax, pl_list[5:], 56789, loc=(0.2, 0.72)) ax.add_artist(l1) ax.add_artist(l2) draw() You may manually adjust the legend position to place the legends side by side (see the commented lines), but it would be somewhat tricky if you need 4 columns. -JJ On Thu, Oct 9, 2008 at 10:50 AM, José Alexandre Nalon [EMAIL PROTECTED] wrote: Hello, Is there an easy way to make a legend with multiple lines and columns? I need 8 plots in the same figure, and the legend takes a lot of space. I believe that if I could orient the legend in multiple lines and columns (say, 2 lines with four columns each), I could save a lot of space, giving more room to the plots. Any other suggestion would be useful. Thanks in advance. -- José Alexandre Nalon [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Lines and columns in legends
Hello, Em Thursday 09 October 2008 13:46:52 Jae-Joon Lee escreveu: Meanwhile, you may try to make multiple legends as a posible workarounds. Thanks for your answer. That did the trick, and the figure looks more or less as I wanted. It would look exactly as I wanted if I could remove the border from the legends and draw a box around the legends. How could I do that? (I apologize if this seems trivial. I use matplotlib a lot, but standard functions always seem to do what I need, so I don't go deep in its behaviour). -- José Alexandre Nalon [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
