legend

I've started with matplot and managed some basic plots, but now I find it hard to discover how to do some stuff I need now :( My actual question is how to place a global title and global legend on a figure with subplots. I'm doing 2x3 subplots where I have a lot of different graphs in various colors (about 200). To distinguish (most) of them I wrote something like def style(i, total): return dict(color=jet(i/total), linestyle=["-", "--", "-.", ":"][i%4], marker=["+", "*", "1", "2", "3", "4", "s"][i%7]) fig=plt.figure() p0=fig.add_subplot(321) for i, y in enumerate(data): p0.plot(x, trans0(y),

I am trying to plot some data with confidence bands. I am doing this with two plots for each data stream: plot , and fill_between . I would like the legend to look similar to the plots, where each entry has a box (the color of the confidence region) with a darker, solid line passing through the center. So far I have been able to use patches to create the rectangle legend key, but I don't know how to achieve the centerline. I tried using hatch, but there is no control over the placement, thickness, or color. My original idea was to try and combine two patches (Patch and 2DLine); however, it

I am trying to color match the text of the legend to the color of text produced by a factored variable using geom_text . Here is a minimal working example: df <- data.frame(a=rnorm(10),b=1:10,c=letters[1:10],d=c("one","two")) p1 <-ggplot(data=df,aes(x=b,y=a)) p1 <- p1 + geom_text(aes(label = c, color=d, fontface="bold")) p1 <- p1 + scale_color_hue(name="colors should match",breaks=c("one", "two"), labels=c("should be pink", "should be blue")) p1 I am sure its a simple fix. Any suggestions or reference to prior posts would help. I did not find anything specific to this. Following on from joran

I've got a ggplot where I'm mapping factors to both fill and alpha, like this: set.seed(47) the_data <- data.frame(value = rpois(6, lambda=20), cat1 = rep(c("A", "B"), each = 3), cat2 = rep(c("X", "Y", "Z"), 2)) ggplot(the_data, aes(y = value, x = cat2, alpha = cat1, fill = cat2)) + geom_bar(stat = "identity", position = "dodge") + scale_alpha_discrete(range = c(0.5, 1)) + theme_bw() The people I'm producing it for don't find the legend for alpha very clear. I think a good alternative would be something like this (which I hacked together in base graphics): I know I can't generate a legend like

I am producing some plots in matplotlib and would like to add explanatory text for some of the data. I want to have a string inside my legend as a separate legend item above the '0-10' item. Does anyone know if there is a possible way to do this? This is the code for my legend: ax.legend(['0-10','10-100','100-500','500+'],loc='best') Sure. ax.legend() has a two argument form that accepts a list of objects (handles) and a list of strings (labels). Use a dummy object (aka a "proxy artist" ) for your extra string. I picked a matplotlib.patches.Rectangle with no fill and 0 linewdith below, but you

Here is a very simplified example: xvalues = [2,3,4,6] for x in xvalues: plt.axvline(x,color='b',label='xvalues') plt.legend() The legend will now show 'xvalues' as a blue line 4 times in the legend. Is there a more elegant way of fixing this than the following? for i,x in enumerate(xvalues): if not i: plt.axvline(x,color='b',label='xvalues') else: plt.axvline(x,color='b') ecatmur legend takes as arguments a list of axis handles and labels, defaulting to plt.gca().get_legend_handles_labels() . You can remove duplicate labels when calling legend , for example: from collections import