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Plotting problem & Does the matlab can plot raster map?

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ZC Song
ZC Song 2019-6-4
评论： ZC Song 2019-6-4
I have coordinates (X,Y) and its corresponding value (Z), How to visualize them and distinguish with different color for each point? Just like a raster file that every pixel has a value in it.
Thank you very much!
  2 个评论
KSSV
KSSV 2019-6-4
编辑：KSSV 2019-6-4
It is not a raster data. These are scattered points.
ZC Song
ZC Song 2019-6-4
So could you give me a hint that how to transfer those data to raster format?

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KSSV
KSSV 2019-6-4
编辑：KSSV 2019-6-4
Let X,Y,Z be your m*3 data.
x = unique(X) ; nx = length(x) ;
y = unique(X) ; ny = length(y) ;
X = reshape(X,nx,ny) ;
Y = reshape(Y,nx,ny) ;
Z = reshape(Z,nx,ny) ;
figure
pcolor(X,Y,Z)
shading interp
figure
surf(X,Y,Z)
shading interp
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KSSV
KSSV 2019-6-4
YOu have only two values in Z 0 and 1. You can plot them like below:
scatter(X(Z==1),Y(Z==1),'s','filled','r')
hold on
scatter(X(Z==0),Y(Z==0),'s','filled','b')

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