How to plot character matrix with Matlab?

Question

I'd like to plot a character matrix in Matlab, for example this matrix

M = ['test1','test2' ; 'test3','test4'];

Is there a simple way to implement it in Matlab?

Thank you

How would you like to plot the matrix? Write the character arrays in an axis at some (which?) locations, or something else? — mikkola
– mikkola, Commented Dec 20, 2015 at 18:00
Something very simple, just an image corresponding to the matrix M, with each letter in a case and no axes. — user3024655
– user3024655, Commented Dec 20, 2015 at 18:01
Check text. You can define a grid of coordinates and use a loop to add the letters to the figure — Luis Mendo
– Luis Mendo, Commented Dec 20, 2015 at 18:49

Jonas · Accepted Answer · 2015-12-21 22:01:00Z

3

The text command allows you to plot multiple strings at once.

With your example:

M = {'test1','test2';'test3','test4'};

%// adjust x-multiplicator if text becomes very long
[xx,yy] = ndgrid((0:size(M,1)-1)*2+1,1:size(M,2));

figure,
th = text(xx(:),yy(:),M(:));
%// set additional properties, such as centering text horizontally and vertically
set(th,'horizontalAlignment','center','verticalAlignment','middle');

xlim([0 max(xx(:))])
ylim([0,max(yy(:))])

edited Dec 21, 2015 at 22:01

answered Dec 20, 2015 at 19:53

Jonas

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2 Comments

user3024655 Over a year ago

It's very useful and simple ,thank you ! However, I wonder how to center this text on a grid ? (like in a table where the vertical and horizontal lines are visible)

Nick J Over a year ago

the x,y coordinates for text normally anchor the lower right corner. you can use the property/values options to center the text on the specified point. (...,'horizontalalignment', 'center',...) text properties can be found at: gnu.org/software/octave/doc/interpreter/…

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