MATLAB: How to change the color of the bars in a bar chart

bar chartr2014b

Best Answer

Here’s one way:

d = magic(3);
figure(1)
hb = bar(d)
hb(1).FaceColor = 'r';
hb(2).FaceColor = 'm';
hb(3).FaceColor = 'c';

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MATLAB: How to define an arbitrary constant for equations

If you are talking about making an assumption, you can do it as follows:

v1=6;
v3=18;
syms v2 v4 v5 v6
eqn1= -v4+v5==-v3;
eqn2= -v2+v6==v3;
eqn3= -v5-v6==-v1;
assume(v6~=0)
[v2 v4 v5 v6]=solve(eqn1, eqn2, eqn3);
[v2 v4 v5 v6]

MATLAB: Changing bar graph bar colors

By default, all the bars in a bar graph are part of the same patch object, and therefore are the same color. To get different colors, you need to plot each bar as its own object.

x = 1:4;
y = rand(1,4);
h = bar(x, diag(y), length(y));
set(h, {'facecolor'}, {'k','b','g','r'}');

h = bar(x, diag(y), 'stacked');
set(h, {'facecolor'}, {'k','b','g','r'}');

Best Answer

Related Solutions

MATLAB: How to define an arbitrary constant for equations

MATLAB: Changing bar graph bar colors

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