[GRASS-user] grass 7.2 3D voxel display - first time issues

Hi all,

It seem I’m not able to see my beloved voxel model. This is my first experiment.

Input: raster layers generated from vector and I made them a voxel.
Result raster 3d metadata is at the end of this message. Also region in which it was created.

My rasters serving as base seem to be ok (I displayed them as raster surfaces in 3D display mode, only a few of them to check, image attached).

What to do to make them visible?

I’ve tried isosurface and played around with slices but I’m not able to see anything.

2D mode shows nothing. Map extent, location is ok…

I just can’t figure out what is missing. Color table for 3D raster is blue only (values from -1000 to 1000 set to blue, nv=white)

thanks

Robert

g.region -p3
projection: 99 (Swiss. Obl. Mercator)
zone: 0
datum: ** unknown (default: WGS84) **
ellipsoid: grs67
north: 267188.884502
south: 266707.900494
west: 656852.944339
east: 657580.707724
top: 352.00000000
bottom: 102.00000000
nsres: 10.02050017
nsres3: 10.02050017
ewres: 9.96936144
ewres3: 9.96936144
tbres: 10
rows: 48
rows3: 48
cols: 73
cols3: 73
depths: 25
cells: 3504
cells3: 87600

r3.info map=3dtest@Duna
±---------------------------------------------------------------------------+
| Layer: 3dtest@Duna Date: Tue Jun 7 14:19:11 2016 |
| Mapset: Duna Login of Creator: kuszi |
| Location: HungaryEOV |
| DataBase: /home/kuszi/grassdata |
| Title: 3dtest |
| Units: none |
| Vertical unit: units |

Timestamp: none
Type of Map: raster_3d Number of Categories: 0
Data Type: DCELL
Rows: 48
Columns: 73
Depths: 25
Total Cells: 87600
Total size: 43442 Bytes
Number of tiles: 27
Mean tile size: 1608 Bytes
Tile size in memory: 28800 Bytes
Number of tiles in x, y and z: 3, 3, 3
Dimension of a tile in x, y, z: 25, 16, 9
Projection: Swiss. Obl. Mercator (zone 0)
N: 267188.884502 S: 266707.900494 Res: 10.02050017
E: 657580.707724 W: 656852.944339 Res: 9.96936144
T: 352 B: 102 Res: 10
Range of data: min = 1 max = 25
Data Source:
Data Description:
generated by r.to.rast3
Comments:
r.to.rast3 --overwrite input="l_00001_buf_diss,l_00002_buf_diss,l_00\
003_buf_diss,l_00004_buf_diss,l_00005_buf_diss,l_00006_buf_diss,l_00\
007_buf_diss,l_00008_buf_diss,l_00009_buf_diss,l_00010_buf_diss,l_00\
011_buf_diss,l_00012_buf_diss,l_00013_buf_diss,l_00014_buf_diss,l_00\
015_buf_diss,l_00016_buf_diss,l_00017_buf_diss,l_00018_buf_diss,l_00\
019_buf_diss,l_00020_buf_diss,l_00021_buf_diss,l_00022_buf_diss,l_00\
023_buf_diss,l_00024_buf_diss,l_00025_buf_diss" output=“3dtest” tile\
size=32
±---------------------------------------------------------------------------+
VERSION INFO:
GRASS 7.2.svn (2016)
./configure --prefix=/opt --exec_prefix=/opt/grass72 --with-freetype-includes=/usr/include/freetype2 --with-blas --with-lapack --with-geos --with-liblas --with-nls --with-netcdf --with-odbc --with-openmp --with-pthread --with-postgres --with-python=/usr/bin/python2-config --with-readline --with-wxwidgets=/usr/bin/wx-config-2.8
libgis Revision: 67364
libgis Date: 2015-12-24 07:07:44 -0800 (Thu, 24 Dec 2015)
PROJ.4: 4.9.2
GDAL/OGR: 2.1.0
GEOS: 3.5.0
SQLite: 3.13.0
(attachments)

3d_input_surfaces.JPG

On Fri, Jun 10, 2016 at 5:43 AM, Robert Kuszinger <kuszinger@giscom.hu> wrote:

Hi all,

It seem I'm not able to see my beloved voxel model. This is my first
experiment.

Input: raster layers generated from vector and I made them a voxel.
Result raster 3d metadata is at the end of this message. Also region in
which it was created.
My rasters serving as base seem to be ok (I displayed them as raster
surfaces in 3D display mode, only a few of them to check, image attached).

What to do to make them visible?

I've tried isosurface and played around with slices but I'm not able to see
anything.
2D mode shows nothing. Map extent, location is ok...
I just can't figure out what is missing. Color table for 3D raster is blue
only (values from -1000 to 1000 set to blue, nv=white)

not sure what's going on, I was using voxels recently. I found
sometimes there is a problem that slices are drawn white and
isosurfaces not at all, but if I reopen GUI, the problem went away.

Anna

thanks
Robert

g.region -p3
projection: 99 (Swiss. Obl. Mercator)
zone: 0
datum: ** unknown (default: WGS84) **
ellipsoid: grs67
north: 267188.884502
south: 266707.900494
west: 656852.944339
east: 657580.707724
top: 352.00000000
bottom: 102.00000000
nsres: 10.02050017
nsres3: 10.02050017
ewres: 9.96936144
ewres3: 9.96936144
tbres: 10
rows: 48
rows3: 48
cols: 73
cols3: 73
depths: 25
cells: 3504
cells3: 87600

r3.info map=3dtest@Duna

+----------------------------------------------------------------------------+
| Layer: 3dtest@Duna Date: Tue Jun 7 14:19:11 2016
|
| Mapset: Duna Login of Creator: kuszi
|
| Location: HungaryEOV
|
| DataBase: /home/kuszi/grassdata
|
| Title: 3dtest
|
| Units: none
|
| Vertical unit: units
|
| Timestamp: none
|

|----------------------------------------------------------------------------|
|
|
| Type of Map: raster_3d Number of Categories: 0
|
| Data Type: DCELL
|
| Rows: 48
|
| Columns: 73
|
| Depths: 25
|
| Total Cells: 87600
|
| Total size: 43442 Bytes
|
| Number of tiles: 27
|
| Mean tile size: 1608 Bytes
|
| Tile size in memory: 28800 Bytes
|
| Number of tiles in x, y and z: 3, 3, 3
|
| Dimension of a tile in x, y, z: 25, 16, 9
|
|
|
| Projection: Swiss. Obl. Mercator (zone 0)
|
| N: 267188.884502 S: 266707.900494 Res: 10.02050017
|
| E: 657580.707724 W: 656852.944339 Res: 9.96936144
|
| T: 352 B: 102 Res: 10
|
| Range of data: min = 1 max = 25
|
|
|
| Data Source:
|
|
|
|
|
|
|
| Data Description:
|
| generated by r.to.rast3
|
|
|
| Comments:
|
| r.to.rast3 --overwrite input="l_00001_buf_diss,l_00002_buf_diss,l_00\
|
| 003_buf_diss,l_00004_buf_diss,l_00005_buf_diss,l_00006_buf_diss,l_00\
|
| 007_buf_diss,l_00008_buf_diss,l_00009_buf_diss,l_00010_buf_diss,l_00\
|
| 011_buf_diss,l_00012_buf_diss,l_00013_buf_diss,l_00014_buf_diss,l_00\
|
| 015_buf_diss,l_00016_buf_diss,l_00017_buf_diss,l_00018_buf_diss,l_00\
|
| 019_buf_diss,l_00020_buf_diss,l_00021_buf_diss,l_00022_buf_diss,l_00\
|
| 023_buf_diss,l_00024_buf_diss,l_00025_buf_diss" output="3dtest" tile\
|
| size=32
|
|
|

+----------------------------------------------------------------------------+
VERSION INFO:
GRASS 7.2.svn (2016)
./configure --prefix=/opt --exec_prefix=/opt/grass72
--with-freetype-includes=/usr/include/freetype2 --with-blas --with-lapack
--with-geos --with-liblas --with-nls --with-netcdf --with-odbc --with-openmp
--with-pthread --with-postgres --with-python=/usr/bin/python2-config
--with-readline --with-wxwidgets=/usr/bin/wx-config-2.8
libgis Revision: 67364
libgis Date: 2015-12-24 07:07:44 -0800 (Thu, 24 Dec 2015)
PROJ.4: 4.9.2
GDAL/OGR: 2.1.0
GEOS: 3.5.0
SQLite: 3.13.0

_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user