How to delete/alphadata values of 3d data outside polygon without change the dimensions of data

1 次查看（过去 30 天）

Shakir Hussain 2019-3-18

关闭： MATLAB Answer Bot 2021-8-20

We can delete the values of matrix outside polygon as

data = 12*17*6

x,y,S.X and S.Y are belongs to polygon

isin = inpolygon(X,Y,S.X,S.Y);
 data(~isin) = [ ]

but it changes the dimension of data from 3d to single column

Secondly we can also use alphadata for 2d data easily as

imagesc(2ddata) 'AlphaData',~isin(2ddata))

1) How we can use the AlphaData for 3d data?

2) How we can delete values of 3d data outside polygon by keeping the data in same dimension

此问题已关闭。

此问题已关闭。

R2014a

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by