Geoscatter plot with different colors

Hi everyone!

I am trying to do some plotting wit geographical data.

So I've got Latitude and Longitude, which I want to plot on a map; the third data is a dataset consistion of 0s and 3s. (All Arrays have the same length) So always when its a 3 it sould be green and always when its 0 it should be red.

Could you please help me.

My first try was this:

LockNo = find(Lock == 0)
LockFull = find(Lock==3)
plot(x(LockNo),y(LockNo),'r.',x(LockFull),y(LockFull),'g.');

Thank you in advance!

Answer 1

[Walter Roberson]

dot_color = repmat([1 0 0], length(Lock), 1);
dot_color(Lock == 3, :) = [0 0 1];
lat = y; long = x;
pointsize = 20;
scatterm(lat, long, pointsize, dot_color)

or

cmap = [1 0 0; 0 0 0; 0 0 0; 0 0 1];
lat = y; long = x;
pointsize = 20;
scatterm(lat, long, pointsize, cmap(Lock+1,:));