how to make heatmap have a square-shape?

when I do

a=rand(4);
heatmap(a);

I got the following image:

How can I make the figure to a square-shaped one? I tried to use

axis equal;

but there's an error: Using axis with heatmap is not supported.

It seems that "axis" is not supported in heatmap.

[darova]

What about pcolor()?

Answer 1

[Shubh Sahu]

Hello Kinger,

heatmap does not support axis command directly but by extracting properties of heatmap, square-shaped figure can be made.

a=rand(4);
k=heatmap(a);
k.positions=[0.1300 0.1100 0.7179 0.179];

While using above code, make sure that Units property is set to normalized.

Regards,

Shubh

[kinger]

k.position instead of k.positions

Answer 2

[Ramy Rabie]

x = [zeros(11,1), 6*ones(11,1) , 137*ones(11,1) ,...
    84*ones(11,1) ,9*ones(11,1) ,4*ones(11,1)]

y = [ ones(1,6) ; 4*ones(1,6)  ; 45*ones(1,6) ;...
    25*ones(1,6) ; 2*ones(1,6) ; 2*ones(1,6) ;...
    13*ones(1,6) ; 52*ones(1,6) ; 58*ones(1,6) ;...
    15*ones(1,6) ; 4*ones(1,6)]


% Making Heatmap figure has square tiles
wposX=100; wposY = 100;
heatmapLength = 500;
heatmapWidth = heatmapLength - (size(y,2)/size(y,1))*heatmapLength;
figure('Renderer', 'painters', 'Position', [wposX wposY heatmapWidth heatmapLength])
tempMap = heatmap(x+y);
% Make heatmap fill the figure
tempMap.InnerPosition = [0 0 1 1];