Exemple d'interpolation sur la grille à partir de points lat-lon

• gsrc = ezqkdef(nigem, njgem, 'Z', ig1gem, ig2gem, ig3gem, ig4gem, iun)

• ier = gdllsval(gsrc, zout, zgem, lat, lon, n)

• ier = gdllvval(gsrc,uuout,vvout,uugem,vvgem, lat, lon, n)

• ier = gdllwdval(gsrc,spdout, wdout, uugem, vvgem, lat, lon, n)