I want to make a contour of a (37*3) data set. Please help!!!

The data set is like this: 575 -25 7 625 -25 7 650 -50 7 675 -25 7 725 -25 7 725 -75 5 750 -50 7 775 -25 7 800 -100 5 825 -25 7 850 -50 7 875 -25 7 875 -75 5 875 -125 5 900 -150 5 925 -25 7 950 -50 7 975 -25 7 1000 -100 5 1025 -25 7 1025 -75 5 1050 -50 7 1075 -25 7 1125 -25 7 1125 -125 5 1150 -50 7 1175 -25 7 1175 -75 5 1200 -100 5 1225 -25 7 1250 -50 7 1275 -25 7 1325 -25 7 1325 -75 5 1350 -50 7 1375 -25 7 1425 -25 7

Answer 1

[Star Strider]

This is probably as close as you can get to doing what you want:

The Code —

D = [575  -25  7
625  -25  7
650  -50  7
675  -25  7
725  -25  7
725  -75  5
750  -50  7
775  -25  7
800  -100  5
825  -25  7
850  -50  7
875  -25  7
875  -75  5
875  -125  5
900  -150  5
925  -25  7
950  -50  7
975  -25  7
1000  -100  5
1025  -25  7
1025  -75  5
1050  -50  7
1075  -25  7
1125  -25  7
1125  -125  5
1150  -50  7
1175  -25  7
1175  -75  5
1200  -100  5
1225  -25  7
1250  -50  7
1275  -25  7
1325  -25  7
1325  -75  5
1350  -50  7
1375  -25  7
1425  -25  7];

xv = min(D(:,1)):25:max(D(:,1));
yv = min(D(:,2)):25:max(D(:,2));
[X,Y] = meshgrid(xv, yv);
Zi = griddata(D(:,1), D(:,2), D(:,3), X, Y);

figure(1)
contour(X, Y, Zi)
grid on

Experiment to get the result you want. See the documentation on the functions for details on how to use them.