[GRASS-user] 3D raster color coding

[Anna Petrášová]

I sent you some time ago a video how to view 3D rasters using isosurfaces
or slices:
https://youtu.be/CmK-fEyf2SY

If you haven't added any isosurface or slice, you won't see anything beside
the 3D box.

Also, I recommend setting higher z-exaggeration.
Anna

On Mon, Jun 11, 2018 at 10:29 PM Francois Chartier <fra.chartier at gmail.com>
wrote:

>  I have pasted below the colors files for the 3d raster.  The data is
> there as i am viewing the wireframe around the data.  the r3.color is set
> to bgyr.  therefore, i do not see how come the interpolated data does not
> show up in the display.  any ideas?
>
> r3.colors map=BHALL_May24v2 at Toronto color=bgyr
>
> Color table for raster3d map <BHALL_May24v2 at Toronto> set to 'bgyr'
>
>
> color table - the data is associated with a color as per below.
> % -8.9909944534301758 33.892620086669922
> -8.9909944534301758:0:191:191 -0.41427154541015626:0:255:0
> -0.41427154541015626:0:255:0 8.1624513626098629:255:255:0
> 16.739174270629881:255:127:0 25.315897178649902:191:127:63
> 25.315897178649902:191:127:63 33.892620086669922:200
> 8.1624513626098629:255:255:0 16.739174270629881:255:127:0
>
> Metadata of 3d raster. - same range of data as color table.
>
>
> Le dim. 10 juin 2018 à 15:57, Francois Chartier <fra.chartier at gmail.com>
> a écrit :
>
>> the vector is visible in 3d as per attached screen shot.  could this be a
>> problem due to computer instead of Grass.  there may be too many data
>> points to show?
>>
>> Le dim. 10 juin 2018 à 15:46, Francois Chartier <fra.chartier at gmail.com>
>> a écrit :
>>
>>>  I have pasted below the colors files for the 3d raster.  the screen
>>> capture shows that the data is there as i am showing the wireframe around
>>> the data.  the r3.color is set to bgyr.  therefore, i do not see how come
>>> the interpolated data does not show up in the display.
>>>
>>> r3.colors map=BHALL_May24v2 at Toronto color=bgyr
>>>
>>> Color table for raster3d map <BHALL_May24v2 at Toronto> set to 'bgyr'
>>>
>>>
>>> color table - the data is associated with a color as per below.
>>> % -8.9909944534301758 33.892620086669922
>>> -8.9909944534301758:0:191:191 -0.41427154541015626:0:255:0
>>> -0.41427154541015626:0:255:0 8.1624513626098629:255:255:0
>>> 16.739174270629881:255:127:0 25.315897178649902:191:127:63
>>> 25.315897178649902:191:127:63 33.892620086669922:200
>>> 8.1624513626098629:255:255:0 16.739174270629881:255:127:0
>>>
>>> Metadata of 3d raster. - same range of data as color table.
>>> ype of Map:  raster_3d            Number of Categories: 0               |
>>>  |   Data Type:    FCELL
>>>       |
>>>  |   Rows:         90
>>>      |
>>>  |   Columns:      85
>>>      |
>>>  |   Depths:       307
>>>       |
>>>  |   Total Cells:  2348550
>>>       |
>>>  |   Total size:           3180868 Bytes
>>>       |
>>>  |   Number of tiles:      336
>>>       |
>>>  |   Mean tile size:       9466 Bytes
>>>      |
>>>  |   Tile size in memory:  30420 Bytes
>>>       |
>>>  |   Number of tiles in x, y and  z:   6, 7, 8
>>>       |
>>>  |   Dimension of a tile in x, y, z:   15, 13, 39
>>>      |
>>>  |
>>>       |
>>>  |        Projection: UTM (zone 17)
>>>      |
>>>  |            N:    4870795    S:    4825715   Res: 500.88888889
>>>       |
>>>  |            E:     651669    W:     609204   Res: 499.58823529
>>>       |
>>>  |            T:        352    B:         45   Res:     1
>>>      |
>>>  |   Range of data:   min = -8.99099445 max = 33.89262009
>>>      |
>>>  |
>>>       |
>>>  |   Data Source:
>>>      |
>>>  |
>>>       |
>>>  |
>>>       |
>>>  |
>>>       |
>>>  |   Data Description:
>>>       |
>>>  |    generated by v.vol.rst
>>>       |
>>>  |
>>>       |
>>>  |   Comments:
>>>       |
>>>  |    v.vol.rst input="BHMat1All_May12 at Toronto" wcolumn="cat"
>>> tension=40. \   |
>>>  |    smooth=0.1 segmax=50 npmin=200 npmax=700 dmin=2 wscale=1.0
>>> zscale=1.\   |
>>>  |    0 elevation="BHALL_May24v2"
>>>
>>>
>>>
>>> Le sam. 2 juin 2018 à 15:37, Helmut Kudrnovsky <hellik at web.de> a écrit :
>>>
>>>> >Unfortunately in the Display window nothing shows up, whether in 2D or
>>>> in 3D
>>>> view.  I do not know what i >am doing incorrectly.
>>>>
>>>> see https://trac.osgeo.org/grass/ticket/3571
>>>>
>>>> please add your findings there.
>>>>
>>>>
>>>>
>>>> -----
>>>> best regards
>>>> Helmut
>>>> --
>>>> Sent from:
>>>> http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html
>>>> _______________________________________________
>>>> grass-user mailing list
>>>> grass-user at lists.osgeo.org
>>>> https://lists.osgeo.org/mailman/listinfo/grass-user
>>>
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