Classifying data as either 1 or 0

So i have this:

xd = -20:1:20;

yd = -20:1:20;

[x,y] = meshgrid(xd,yd);

A = 0.3;

B = 1;

C = -9;

z = 1./(1+exp(-1*(A*x + B*y + C)));

And I want to pull data that has a value of 1 and put it into one matrix, and then pull data with values of 0 and stick it into another matrix so that i can plot them but I dont know how to, any suggestions?

Answer 1

[Image Analyst]

map1 = z == 1;
map0 = z == 0;

[Kyle Fielder]

But then how do i plot the values when theyre either approaching 0 or 1.

also im on discord if youd be down to just talk me through it.

[Image Analyst]

mapNear1 = abs(z - 1) < someTolerance;
mapNear0 = abs(z) < someTolerance;