Hi Luis, could be because you haven't provided the attribute column. It should probably fail with a message in this case...
Anna On Fri, Apr 16, 2021 at 5:08 AM Luís Moreira de Sousa via grass-user < [email protected]> wrote: > Hi all, > > I have been trying to use v.surf.idw the past few days without success. > > The image attached is a screen capture from the Map Display. There is a > category > raster (green regions) with a gap (lake Chad) that must be filled with the > nearest neighbour category. The strategy is to create a points vector from > the raster > and then apply v.surf.idw with npoints=1. > > If the density of points is too high (> 10 000) the module fails with the > message "Killed". With fewer points the module fails with the message > "ERROR: No points found". Below is a log with an example. I have > tried many different combinations of resolution and number of points, I > also tried different mapsets, SQLite and Postgres back-ends, but the result > is always the same. > > What can be going wrong? > > P.S.: there is previous thread with similar symptoms, but seems to have > been a different issue: > http://osgeo-org.1560.x6.nabble.com/v-surf-idw-Not-Working-td5457170.html > > Thank you. > > Luís > > GRASS 7.8.2 (S4AHomolosine):~ > g.region nsres=20000 ewres=20000 w=1474000 > n=1626000 e=1760000 s=1383000 > GRASS 7.8.2 (S4AHomolosine):~ > r.to.vect type=point > input=soil_map_rcl_no_water output=soil_map_rcl_no_water --overwrite > WARNING: Vector map <soil_map_rcl_no_water> already exists and will be > overwritten > Extracting points... > 100% > Building topology for vector map <soil_map_rcl_no_water@MAL>... > Registering primitives... > r.to.vect complete. > GRASS 7.8.2 (S4AHomolosine):~ > v.info soil_map_rcl_no_water > > +----------------------------------------------------------------------------+ > | Name: > soil_map_rcl_no_water | > | Mapset: > MAL | > | Location: > S4AHomolosine | > | Database: > /home/duque004/Work/GRASSDATA | > | > Title: | > | Map scale: > 1:1 | > | Name of creator: > duque004 | > | > Organization: | > | Source date: Fri Apr 16 10:10:31 > 2021 | > | Timestamp (first layer): > none | > > |----------------------------------------------------------------------------| > | Map format: > native | > > |----------------------------------------------------------------------------| > | Type of map: vector (level: > 2) | > | > | > | Number of points: 114 Number of centroids: > 0 | > | Number of lines: 0 Number of boundaries: > 0 | > | Number of areas: 0 Number of islands: > 0 | > | > | > | Map is 3D: > No | > | Number of dblinks: > 1 | > | > | > | Projection: > unknown | > | > | > | N: 1615875 S: > 1393125 | > | E: 1749785.71428571 W: > 1484214.28571429 | > | > | > | Digitization threshold: > 0 | > | > Comment: | > | > | > > +----------------------------------------------------------------------------+ > > GRASS 7.8.2 (S4AHomolosine):~ > g.region nsres=100 ewres=100 w=1474000 > n=1626000 e=1760000 s=1383000 > GRASS 7.8.2 (S4AHomolosine):~ > v.surf.idw npoints=1 > input=soil_map_rcl_no_water output=soil_map_rcl_water_fill --overwrite > Input vector map <soil_map_rcl_no_water@MAL> is 2D - using categories to > interpolate > WARNING: No record for point (cat = 1) > WARNING: No record for point (cat = 2) > WARNING: No record for point (cat = 3) > WARNING: No record for point (cat = 4) > WARNING: No record for point (cat = 5) > WARNING: No record for point (cat = 6) > WARNING: No record for point (cat = 7) > WARNING: No record for point (cat = 8) > WARNING: No record for point (cat = 9) > WARNING: No record for point (cat = 10) > WARNING: No record for point (cat = 11) > WARNING: No record for point (cat = 12) > WARNING: No record for point (cat = 13) > WARNING: No record for point (cat = 14) > WARNING: No record for point (cat = 15) > WARNING: No record for point (cat = 16) > WARNING: No record for point (cat = 17) > WARNING: No record for point (cat = 18) > WARNING: No record for point (cat = 19) > WARNING: No record for point (cat = 20) > WARNING: No record for point (cat = 21) > WARNING: No record for point (cat = 22) > WARNING: No record for point (cat = 23) > WARNING: No record for point (cat = 24) > WARNING: No record for point (cat = 25) > WARNING: No record for point (cat = 26) > WARNING: No record for point (cat = 27) > WARNING: No record for point (cat = 28) > WARNING: No record for point (cat = 29) > WARNING: No record for point (cat = 30) > WARNING: No record for point (cat = 31) > WARNING: No record for point (cat = 32) > WARNING: No record for point (cat = 33) > WARNING: No record for point (cat = 34) > WARNING: No record for point (cat = 35) > WARNING: No record for point (cat = 36) > WARNING: No record for point (cat = 37) > WARNING: No record for point (cat = 38) > WARNING: No record for point (cat = 39) > WARNING: No record for point (cat = 40) > WARNING: No record for point (cat = 41) > WARNING: No record for point (cat = 42) > WARNING: No record for point (cat = 43) > WARNING: No record for point (cat = 44) > WARNING: No record for point (cat = 45) > WARNING: No record for point (cat = 46) > WARNING: No record for point (cat = 47) > WARNING: No record for point (cat = 48) > WARNING: No record for point (cat = 49) > WARNING: No record for point (cat = 50) > WARNING: No record for point (cat = 51) > WARNING: No record for point (cat = 52) > WARNING: No record for point (cat = 53) > WARNING: No record for point (cat = 54) > WARNING: No record for point (cat = 55) > WARNING: No record for point (cat = 56) > WARNING: No record for point (cat = 57) > WARNING: No record for point (cat = 58) > WARNING: No record for point (cat = 59) > WARNING: No record for point (cat = 60) > WARNING: No record for point (cat = 61) > WARNING: No record for point (cat = 62) > WARNING: No record for point (cat = 63) > WARNING: No record for point (cat = 64) > WARNING: No record for point (cat = 65) > WARNING: No record for point (cat = 66) > WARNING: No record for point (cat = 67) > WARNING: No record for point (cat = 68) > WARNING: No record for point (cat = 69) > WARNING: No record for point (cat = 70) > WARNING: No record for point (cat = 71) > WARNING: No record for point (cat = 72) > WARNING: No record for point (cat = 73) > WARNING: No record for point (cat = 74) > WARNING: No record for point (cat = 75) > WARNING: No record for point (cat = 76) > WARNING: No record for point (cat = 77) > WARNING: No record for point (cat = 78) > WARNING: No record for point (cat = 79) > WARNING: No record for point (cat = 80) > WARNING: No record for point (cat = 81) > WARNING: No record for point (cat = 82) > WARNING: No record for point (cat = 83) > WARNING: No record for point (cat = 84) > WARNING: No record for point (cat = 85) > WARNING: No record for point (cat = 86) > WARNING: No record for point (cat = 87) > WARNING: No record for point (cat = 88) > WARNING: No record for point (cat = 89) > WARNING: No record for point (cat = 90) > WARNING: No record for point (cat = 91) > WARNING: No record for point (cat = 92) > WARNING: No record for point (cat = 93) > WARNING: No record for point (cat = 94) > WARNING: No record for point (cat = 95) > WARNING: No record for point (cat = 96) > WARNING: No record for point (cat = 97) > WARNING: No record for point (cat = 98) > WARNING: No record for point (cat = 99) > WARNING: No record for point (cat = 100) > WARNING: No record for point (cat = 101) > WARNING: No record for point (cat = 102) > WARNING: No record for point (cat = 103) > WARNING: No record for point (cat = 104) > WARNING: No record for point (cat = 105) > WARNING: No record for point (cat = 106) > WARNING: No record for point (cat = 107) > WARNING: No record for point (cat = 108) > WARNING: No record for point (cat = 109) > WARNING: No record for point (cat = 110) > WARNING: No record for point (cat = 111) > WARNING: No record for point (cat = 112) > WARNING: No record for point (cat = 113) > WARNING: No record for point (cat = 114) > 0 points loaded > ERROR: No points found > > > > -- > Luís > > Sent with ProtonMail <https://protonmail.com> Secure Email. > > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user >
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