MATLAB: Change color on a single bar

Question

Dear MatLab comunity,

I have a problem in changing color on a single or multiple bars in a normal and easy bar graph.

I tried the following:

%% Load Data
RMSD_UDP = load('rmsf_UDP.dat');
% Assign variables
n = RMSD_UDP(:,1); %number of residue
x_UDP = RMSD_UDP(:,2); %RMSF for given residue
%Figure
figure
hold on
title('RMSF UDP');
w1 = 0.5; 
b = bar(n,x_UDP,w1)
b.FaceColor = 'g';
b.CData(2,:) = [.5 0 .5];
b.CData(44,:) = ['k'];
xlabel('Residue');
ylabel('RMSF');
xlim([0 364])
ylim([0 5])

It doesn't work but I don't know if it's the MatLab version (R2017a). I tried it on one of the latest ones and it didn't work either. there must be some detail i am not seeing.

Any idea?

Have a nice day,

Alex

Answer 1

You have to set FaceColor to 'flat'.

• https://www.mathworks.com/matlabcentral/answers/553894-barcharts-colours-based-on-other-vectors#answer_456622
• https://www.mathworks.com/matlabcentral/answers/486175-how-can-i-change-colors-and-generate-errorbars-in-a-bar-graph#answer_397071

Update: These methods rely on using the CData property which became available in Matlab r2017b.