CODEWITHSUNDEEP
matlabplot
jshep
jshep

Reputation: 241

How can I use a cell array as axis ticks in a pcolor plot?

I am trying to plot a heat map using pcolor which is working fine, but both the x-axis ticks are just increasing integers labelling each data point.

Is there a way I can plot so that one of the axes uses a cell array as its ticks?

For example, at the moment I have data like: 

x = [1, 2, 3]
y = {'a', 'b', 'c'}
z = [4, 2, 6; 5, 3, 1; 6, 4, 5]

Then pcolor(x,y,z) would throw an error saying the data inputs must be real.

pcolor(z) would work, but tick both axes 1 2 3

Any ideas?

Upvotes: 2

Views: 489

Answers (1)

dasdingonesin
dasdingonesin

Reputation: 1358

x, y and z are supposed to contain your data, not the tick labels. You can change the tick labels of any plot by setting the XTickLabel and/or YTickLabel property of the axes:

x = 1:3;
y = 1:3;
z = rand(3);
pcolor(x,y,z);
set(gca,'XTick',1:3);
set(gca,'XTickLabel',{'a','b','c'});

Result:

Plot result

Upvotes: 4

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