Re: [GRASS-user] use of v.surf.rst on big datasets with low memory
Le 06/06/2010 00:00, Hamish a écrit : Jean Roc wrote: I'm trying to build a regional DEM based on a contour line map (3D vector) using v.surf.rst but the process fails with an memory allocation error when I set my region to a 50m resolution. what does 'g.region -p' say? (config - region - display region) Here is the output : projection: 99 (Lambert Conformal Conic) zone: 0 datum: towgs84=0,0,0,0,0,0,0 ellipsoid: grs80 north: 7101577 south: 6991409 west: 597190 east: 713347 nsres: 50.00817068 ewres: 50.00301334 rows: 2203 cols: 2323 cells: 5117569 The outcome of v.surf.rst is the same (G_malloc error) when used on a smaller region with a smaller resolution, in any cases I've tried if the number of points is over 2 millions it fails. Regards, Jean Roc ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] use of v.surf.rst on big datasets with low memory
Jean Roc wrote: I'm trying to build a regional DEM based on a contour line map (3D vector) using v.surf.rst but the process fails with an memory allocation error when I set my region to a 50m resolution. what does 'g.region -p' say? (config - region - display region) Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] use of v.surf.rst on big datasets with low memory
Hi, I'm trying to build a regional DEM based on a contour line map (3D vector) using v.surf.rst but the process fails with an memory allocation error when I set my region to a 50m resolution. As I'm using GRASS 6.4svn (OSGEO4W) on a Windows XP x86 with 2Go of RAM, I would like to know if it is gonna be a constant error due to those hardware/software specs. (Thu Jun 03 13:12:31 2010) v.surf.rst input=mnt_i2g...@mnt layer=0 elev=rst_mnt_i2g_r...@mnt tension=40 segmax=40 npmin=300 dmin=25 dmax=125 Pourcentage complet : Lignes de lecture de la carte vectorielle... certains points sont en dehors de la région -- ignorés... Reading nodes from vector map ... il y a des points en-dehors de la région 2D/3D spécifiée -- 2 points ignorés 28763365 points ignorés -- trop dense Processing all selected output files will require 26129572 bytes of disk space for temp files Pourcentage complet : la recherche de points pour l'interpolation prend trop de temps -- veuillez changer la régionpour la zone où se trouvent vos points. Les calculs se poursuivent... The number of points from vector map is 32808058 The number of points outside of 2D/3D region 2 The number of points being used is 4044691 [...] ERROR: G_malloc: unable to allocate 16992 bytes at segmen2d.c:196 (Thu Jun 03 16:12:58 2010) Command finished (10826 sec) Regards, MORREALE Jean Rof ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
