How can i make a colored 2d grid map, using a equation?
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My doubt is that, i want to make a colored 2d grid map using an equation. For ex, lets say i have a big intensity of a phenomenon in the center or elsewhere and it's decreasing with the distance from the source. Like sound propagation.
Maybe there is a maptool that can i modify the parameters in how the color changes from red colors range (high levels) to blue colors range (low levels) following an equation.
Hope someone can be of help.
답변 (2개)
Bjorn Gustavsson
2021년 3월 26일
This is exactly what matlab is for, so you're thinking about the right tool. For a quick take-off I recommend you look through the matlab-onramp material, there this type of topics will be introduced together with a lot of other important stuff. Then you can do this, but if you run into problems just ask for the details of where you get stuck.
Welcome to matlab!
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KSSV
2021년 3월 26일
You need to proceed something like this:
% mesh
x = linspace(-1,1) ;
y = linspace(-1,1) ;
[X,Y] = meshgrid(x,y) ;
p = [0 0] ; % charge is at this point
%
R = sqrt((p(1)-X).^2+(p(2)-Y).^2) ;
% constants
Ka = 1 ;
Q = 3.5 ;
a = 2 ;
% Equation
P = Ka*(R/Q^(1/3)).^a ;
surf(X,Y,P)
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