Plotting hitmap with different box size

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Hello,
I have a 64x9 matrix and I want to plot a heatmap with different box sizes. Figure as below.
Can someone please help me with this? Added sample data file
  5 Commenti
Mudasser Seraj
Mudasser Seraj il 27 Lug 2018
Modificato: Mudasser Seraj il 27 Lug 2018
Yeah. That's why I am asking help if someone can do this with codes. I couldn't find anything like this in File Exchange.
jonas
jonas il 27 Lug 2018
You can do this quite easily with scatter3. I'll give it a try.

Accedi per commentare.

Risposta accettata

Kelly Kearney
Kelly Kearney il 27 Lug 2018
You can create this pretty easily using patches:
The test data:
c = rand(20,9)*2 - 1; % Color value
s = c; % Scale value
Plot
% Coordinates for a box
xbox = [-1 -1 1 1 -1]*0.5;
ybox = [-1 1 1 -1 -1]*0.5;
% Coordinates for the box centers
[yc,xc] = ndgrid(1:size(c,1), 1:size(c,2));
xc = xc + 0.5;
yc = yc + 0.5;
% Scale the box and add to center coordinates
x = xc(:) + xbox.*s(:);
y = yc(:) + ybox.*s(:);
% Plot
patch(x',y',c(:),'edgecolor', 'none');
axis tight equal;
set(gca, 'clim', [-1 1]);
colorbar;
Note that in this example I'm using the implicit expansion that was introduced recently (R2017 or so)... in older versions you'll have to use repmat, bsxfun, etc.

Più risposte (1)

jonas
jonas il 27 Lug 2018
Modificato: jonas il 27 Lug 2018
Here's an alternative using scatter3.
%%Some data
[X,Y]=meshgrid(1:10,1:10);
Z=rand(10,10).*2-1;
figure;hold on
%%Scale for color
zc=(Z+1).*100;
cn = ceil(max(zc(:)));
cm = colormap(parula(cn));
%%Scale Z for box size
zb=abs(Z(:).*850);
%%plot and fix visuals
h=scatter3(X(:), Y(:), Z(:), zb,cm(ceil(zc),:),'s','filled')
colorbar
caxis([-1 1])
set(h,'markeredgecolor','k')
set(gca,'xtick',1:10,'ytick',1:10)
box on
axis([0,11,0,11])
view(2)
grid on
See attachment

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