[Scilab-users] {EXT} Sgrayplot/champ for non-regular grids

[philippe]

Le 16/04/2019 à 16:16, Dang Ngoc Chan, Christophe a écrit :
>
> Just a quick idea:
> have you considered using interp2d() 

at first look yes but interp2d() use the output of spline2d(x,y,z) where
x and y should be vectors which is a "regular grid" .... After a
Joukowski transform the regular grid is transformed like this :

https://photos.app.goo.gl/1rqWtyhYUCaofrme6


> or linear_interpn() to get values on a regular grid?

looks like I search for the reverse function !

tanks for your reply,
Philippe