[Scilab-users] surf and %nan

[sgougeon at free.fr]

Hello Richard,

>----- Mail original -----
>Envoyé: Mardi 21 Novembre 2017 17:41:40
>
>Hi all,
>I have a big matrix, which I want to surf plot. However there are actually
>only values for a non-rectangular shape and i want to blank out those other
>values (which are -999 by default).
>
>[a,b]=find(M==-999);
>M(a,b) = %nan;

The syntax is:
M(M==-999) = %nan;
or
M(find(M==-999)) = %nan;

Then

surf(M);

should be OK.

HTH
Samuel