Plotting discretized field in 2D

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Spyros Polychronopoulos
评论： Anton Semechko 2018-6-12
I have x,y Cartesian Coordinates and a value next to them that I would like to plot in color in the corresponding x,y.
xy = linspace(0,20,11);
x_y_value = [(combvec(xy,xy) )' rand(121,1)];
Here I would like to plot 2x2 squares at x,y (two first columns of x_y_value matrix) colored according to the value (third column of x_y_value matrix).
I am looking something like the attached image.
Thank you

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Anton Semechko
Anton Semechko 2018-6-12
Here is an example:
x_lim=[0 20];
x=linspace(x_lim(1),x_lim(2),11);
[X,Y]=meshgrid(x);
F=randn(size(X)).*X-randn(size(X)).*Y;
figure('color','w')
imagesc(x_lim,x_lim,F)
axis equal
set(gca,'XLim',x_lim+[-1 01],'YLim',x_lim+[-1 1])
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Spyros Polychronopoulos
Spyros Polychronopoulos 2018-6-12
This is exactly what I was looking for! I have never came across bsxfun. Thank you again Anton!

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