Creating a scatter plot with three variables.

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Brandon Bush 2018-6-5

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评论： Star Strider 2020-4-15

Hello, I am trying to create a scatter plot of some rain gauge data. I have three columns with data in them. My X variable is for Longitude, Y is Latitude and Z would be the rainfall totals. Each variable is a 31x1 double array. How can I get the Z variable to show up as individual points on the graph with color representing higher values?

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Star Strider 2018-6-5

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This uses the value of ‘Z’ to scale the colors:

x = 1:20;
y = 1:20;
[X,Y] = ndgrid(x,y);                                        % Create Grids
Z = (X - 10).*(Y - 10);                                     % Create ‘Z’
figure
scatter3(X(:), Y(:), Z(:), [], Z(:), 'filled')              % Use ‘Z(:)’ To Scale Colors