Colorbar for each row in ImageGrid

Question

Disclaimer: I am very inexperienced using matplotlib and python in general.

Here is the figure I'm trying to make:

Using GridSpec works well for laying out the plots, but when I try to include a colorbar on the right of each row, it changes the size of the corresponding subplot. This seems to be a well known and unavoidable problem with GridSpec. So at the advice of this question: Matplotlib 2 Subplots, 1 Colorbar I've decided to remake the whole plot using ImageGrid. Unfortunately the documentation only lists the options cbar_mode=[None|single|each] whereas I want 1 colobar per row. Is there a way to do this inside a single ImageGrid? or will I have to make 2 grids and deal with the nightmare of alignment.

What about the 5th plot at the bottom? Is there a way to include that in the image grid somehow?

The only way I can see this working is to somehow nest two ImageGrids into a GridSpec in a 1x3 column. this seems overly complicated and difficult so I don't want to build that script until I know its the right way to go.

Thanks for any help/advice!

Mr.Weathers · Accepted Answer · 2017-07-06T19:56:37.047

Ok I figured it out. It seems ImageGrid uses subplot somehow inside it. So I was able to generate the following plot using something like

TopGrid = ImageGrid( fig, 311,
                nrows_ncols=(1,2),
                axes_pad=0,
                share_all=True,
                cbar_location="right",
                cbar_mode="single",
                cbar_size="3%",
                cbar_pad=0.0,
                cbar_set_cax=True
                )  
<Plotting commands for the top row of plots and colorbar>

BotGrid = ImageGrid( fig, 312,
                nrows_ncols=(1,2),
                axes_pad=0,
                share_all=True,
                cbar_location="right",
                cbar_mode="single",
                cbar_size="3%",
                cbar_pad=0.0,
                )
<Plotting commands for bottom row . . .>
StemPlot = plt.subplot(313)
<plotting commands for bottom stem plot>

EDIT: the whitespace in the color plots is intentional, not some artifact from adding the colorbars

Do you want the whitespace above and below the plots in the top two rows, or did that come along with the colorbars? — cphlewis, Jul 06 '17 at 19:46
yes, thanks for clarifying. The whitespace is intentional and encodes useful information about the plots, it is not an artifact from the colobars — Mr.Weathers, Jul 06 '17 at 19:55
What a great solution. Certainly worth more than a meagre +1 . — Mali Remorker, Feb 13 '18 at 19:20

Colorbar for each row in ImageGrid

1 Answers1