I have computed a digital terrain model from a set of points (x, y, z) using the function interp() in package akima. I want to predict flooded surfaces given target values of z. I can display the flooded surfaces with contour() or image(), but I don't know how to get the polygons delimiting the surfaces. Did anyone write a function for this purpose ?
Best regards,
Renaud
-- Dr Renaud Lancelot, v�t�rinaire CIRAD, D�partement Elevage et M�decine V�t�rinaire (CIRAD-Emvt) Programme Productions Animales http://www.cirad.fr/presentation/programmes/prod-ani.shtml
ISRA-LNERV tel (221) 832 49 02 BP 2057 Dakar-Hann fax (221) 821 18 79 (CIRAD) Senegal e-mail [EMAIL PROTECTED]
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