>> [x,y]=meshgrid(-2:0.01:2,-2:0.01:2);>> size(x)ans = 401 401>> size(y)ans= 401 401>> mesh(x)
![figure7.gif image](https://engineering.purdue.edu/ECN/Support/KB/Docs/MatlabCharlesBoumans/figure7.gif)
>> mesh(y)
![figure8.gif image](https://engineering.purdue.edu/ECN/Support/KB/Docs/MatlabCharlesBoumans/figure8.gif)
>> z=exp(-(x.*x+y.*y));>> mesh(z)
![figure9.gif image](https://engineering.purdue.edu/ECN/Support/KB/Docs/MatlabCharlesBoumans/figure9.gif)
Graphic User Interface
gui_test.m (file name)---------------------hslide = uicontrol('style','slider','units','normal',... 'pos',[.4 .0 .2 .05],'callback','set_num','Min',0,'Max',10);number = uicontrol('style','text','units','normal',... 'pos',[.4 .05 .2 .05]);
set_num.m (file name)---------------------hslide = uicontrol('style','slider','units','normal',... 'pos',[.4 .0 .2 .05],'callback','set_num','Min',0,'Max',10);number = uicontrol('style','text','units','normal',... 'pos',[.4 .05 .2 .05]);
![figure10.gif image](https://engineering.purdue.edu/ECN/Support/KB/Docs/MatlabCharlesBoumans/figure10.gif)