Scatterplot equivalent in plotting 3d data in 2d
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Hasti Yavari
le 24 Juil 2017
Commenté : Walter Roberson
le 25 Juil 2017
Hi everyone,
I have three vectors of same size (54796X1 double) and want to plot them like the image attached. Using the scatter function, scatter(x,y ,35, z, 'filled'), naturally I get a plot made of dots. I increased the dot size to make the data look full but as you can see it is not a good solution. Do you know how the plot in the attached image is generated with the same data? I thought of image but I can not get it to work. I have attached the vectors in the workspace. Here is how I got my plot using scatter and contour:
scatter(x,y ,35, z, 'filled')
x_interpolated = linspace( -90, 90, 300 );
y_interpolated = linspace( -90, 90, 300 );
[ hx, hy ] = meshgrid( x_interpolated, y_interpolated );
F = TriScatteredInterp(x, y, z);
data_interpolated = F(hx, hy);
hold on
contour( x_interpolated, y_interpolated, data_interpolated, 10, 'k' );
Any help is highly appreciated.
/Hasti
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/166258/image.png)
6 commentaires
Walter Roberson
le 24 Juil 2017
It looks to me to be likely that your scatter plot is completely hidden by the contour plot. Both are in the z=0 plane and since they are the same depth and are both space filling areas instead of lines, the one that is going to show up is the one drawn last.
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KSSV
le 24 Juil 2017
You need to do interpolation with the scattered data...and then use surf or pcolor. Read about scatteredInterpolant
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