2D scatter-plot with colorbar
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Hello everyone,
I have 2 variables, X, and Y represent the precipitation measurements from two different datasets, and I want to plot them as a scatterplot with colorbar representing the no of coincident points in each color. I tried to use scatter function, but I found I have to input Z (which represent here the no of measurements in bin) to the function to plot colored scatter plot, and I don't know how to get the count of the measurements in each color as input.
any suggestions, please?? Thanks
回答（1 个）
You can represent the no of measurements in bin as the fourth argument while calling the scatter plot. Here is the sample plot using random data.
x = linspace(0,2*pi,50);
y = sin(x) + randi(50,1,50);
c = linspace(1,10,length(x));
scatter(x,y,[],c,'filled')
colorbar
colormap jet
1 个评论
Alexi
2023-1-14
I'm also trying to add colorbar for polarscatter but I get an incompatible colorbar with my val value.
Why doesn't the colorbar occur depending on the val value?
azi_dif=36;
deggorad=pi/180;
azi=[0;36;72;108;144;180;216;252;-288;324;360];
th =deggorad*azi;
radi=[0;0.1;0.3;0.5;0.8;0.85;1;0.9;0.65;0.84;0.86];
val=[15;20;14;17;19;15;13;14;17;19;22];
cn = ceil(max(val));
cm = colormap(jet(cn));
figure(2)
s=polarscatter(th, radi, [], cm(fix(val),:), 'filled');
colorbar
s.SizeData =100;
grid on
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2021-7-10
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