20251117

2025-11-17 11:16:02 +08:00
parent 4bd2d87fc4
commit 1b3b07a7f6
35 changed files with 454 additions and 0 deletions
@@ -0,0 +1,16 @@
+subplot(1,2,1);
+x=-3:0.1:3;
+y=-3:0.1:3;
+z=x.*exp(-x.^2-y.^2);
+plot3(x,y,z);
+subplot(1,2,2);
+[x,y]=meshgrid(-3:0.1:3);
+z=x.*exp(-x.^2-y.^2);
+surf(x,y,z);
+shading interp;
+colormap("spring");
+k=find(x<=0 & y<=0);
+z1=z;
+z1(k)=NaN;
+surf(x,y,z1);
+shading interp;