Multiple Colors in Bar Graph

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Vartika Agarwal
Vartika Agarwal on 18 Nov 2021
Commented: Mathieu NOE on 19 Nov 2021
I want a bar graph that creates 10 different bars. I want every bar to be different color. How do I achieve this?

Accepted Answer

Mathieu NOE
Mathieu NOE on 18 Nov 2021
hello
see example below
clc
clear all
close all
data_co2 = [.142 .156 .191 .251 0.5 0.86 2.2 4 8.3];
data_gdp = rand(size(data_co2));
uniNames = {'eno','pck','zwf','foo','bar','jhy','vfd','vre','zqs'};
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%% main code %%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
data_min = min(data_gdp);
data_max = max(data_gdp);
map = colormap('jet');
[mmap,nmap] = size(map);
f = figure(1);
N = numel(data_co2);
for i=1:N
h = bar(N-i+1, data_co2(i));
if i == 1, hold on, end
% now define col value based on data value (min data value maps to colormap map index 1
% and max data value maps to colormap map last index);
ind = fix(1+(mmap-1)*(data_gdp(i)-data_min)/(data_max-data_min));
set(h, 'FaceColor', map(ind,:)) ;
% Display the values as labels at the tips of the bars.
xtips1 = h.XEndPoints;
ytips1 = h.YEndPoints + 0.25;
labels1 = string(h.YData);
text(xtips1,ytips1,labels1,'HorizontalAlignment','center')
end
%
set(gca, 'XTickLabel', '')
xlabetxt = uniNames;
xpos = -max(xlim)/25;
t = text(1:N,repmat(xpos,N,1), xlabetxt,'Rotation',45,'FontSize',15,'HorizontalAlignment','center');
ylabel('CO² concentration','FontSize',12)
title('CO² concentration vs. GDP range','FontSize',15)
hcb=colorbar('ver');
hcb.Title.String = "GDP range";
hcb.Title.FontSize = 13;
  6 Comments
Mathieu NOE
Mathieu NOE on 19 Nov 2021
My pleasure !
would you mind accepting my answer ?
tx

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