surf creates two surfaces, one matches the data points but the other incorrectly connects opposite edges directly

surf creates two surfaces, one matches the data points but the other incorrectly connects opposite edges together. How to generate a single surface only connecting adjacent points?

Code:

fidDoubleCrossover = fopen('doublecrossover.txt');

% fill the array in column order:

DoubleCrossover = fscanf(fidDoubleCrossover, '%d', [3 inf]);

DoubleCrossover = DoubleCrossover';

% close the file

fclose(fidDoubleCrossover);

x = DoubleCrossover(:,1);

y = DoubleCrossover(:,2);

z = DoubleCrossover(:,3);

[X,Y] = meshgrid(x,y);

Z = griddata(x,y,z, X, Y,'natural');

figure('color',[1,1,1]);

h = surf(X,Y,Z,'FaceAlpha',0.1);

hold on

stem3(X,Y,Z,'.','MarkerSize',15)

Data in file:

5 5 1195

15 5 2165

25 5 1159

35 5 1186

45 5 1474

5 15 1059

15 15 1001

25 15 946

35 15 1003

45 15 949

5 25 1203

15 25 992

25 25 927

35 25 925

45 25 923

5 35 1192

15 35 1026

25 35 946

35 35 943

45 35 927

5 45 1066

15 45 967

25 45 936

35 45 934

45 45 925

Answer 1

[darova]

Try

x1 = linspace(min(x),max(x),5);
y1 = linspace(min(y),max(y),5);
[X,Y] = meshgrid(x1,y1);

Please use special buttons

[chris]

Thank you!