Colours of a Histogram

55 views (last 30 days)
Brian O'Connell
Brian O'Connell on 27 Mar 2022
Commented: Brian O'Connell on 27 Mar 2022
Hi,
I have a histogram with 7 categories, that I created using the code...
data = sum(prod2020)
x = ["Fossil" "Biomass" "Geothermal" "Hydro" "Solar" "Wind" "Other" ];
C = categorical(x);
y = [data];
h = histogram('Categories', C, 'BinCounts', y);
I would like to colour the bars separate colours.
mycolour = ['red' 'cyan' 'black' 'blue' 'yellow' 'green''magenta'];
I don't seem to be able to add this into my command in any way.
any ideas?
thanks
b

Accepted Answer

Dave B
Dave B on 27 Mar 2022
Edited: Dave B on 27 Mar 2022
If you're specifying the counts, could you use bar instead of histogram? bar has a CData property for this purpose. The limits will appear slightly different but other than that it's pretty similar.
Notes:
  • I called categorical with (x,x) to ensure the categories are plotted in the same order that they were specified (otherwise bar will place them in alphabetical order).
  • You'll need to specify FaceColor as 'flat' to make bar use CData
  • I used validatecolor to convert the colors to an RGB matrix
I put both into a tiledlayout just to do the comparison side-by-side:
x = ["Fossil" "Biomass" "Geothermal" "Hydro" "Solar" "Wind" "Other" ];
C = categorical(x,x);
y = sum(rand(7));
nexttile;
h = histogram("Categories", C, "BinCounts", y);
nexttile
clrs=validatecolor(["red" "cyan" "black" "blue" "yellow" "green" "magenta"],'multiple');
b = bar(C,y,'FaceColor','flat','CData',clrs,'BarWidth',.9);
  1 Comment
Brian O'Connell
Brian O'Connell on 27 Mar 2022
Thank you so much...

Sign in to comment.

More Answers (0)

Categories

Find more on Data Distribution Plots in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!