2D scatter-plot with colorbar

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

Answer 1

[ANKUR KUMAR]

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

[Alexi]

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