File: peaks.sci

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scilab 2.6-4
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function z=peaks(x,y)
x1=x(:).*.ones(1,size(y,'*'));
y1=y(:)'.*.ones(size(x,'*'),1);
z =  (3*(1-x1).^2).*exp(-(x1.^2) - (y1+1).^2) ... 
   - 10*(x1/5 - x1.^3 - y1.^5).*exp(-x1.^2-y1.^2) ... 
   - 1/3*exp(-(x1+1).^2 - y1.^2) 

function z=peakit()
// pour avoir un truc voisin de matlab avec 80 points 
x=-4:0.1:4;y=x;z=peaks(x,y);