[Paraview] geotiff aerial imagery

andrealphus andrealphus at gmail.com
Wed Nov 9 13:33:13 EST 2016


thanks Sebastien!

On Wed, Nov 9, 2016 at 10:01 AM, Sebastien Jourdain
<sebastien.jourdain at kitware.com> wrote:
> They are still there but hidden by default as considered as advanced.
> So you can either turn the advance button ON or simply write in the search
> box: "map scalars"
>
> On Wed, Nov 9, 2016 at 10:23 AM, andrealphus <andrealphus at gmail.com> wrote:
>>
>> How do I properly display an RGB image from a 3 band (or 4 if alpha)
>> geotiff? I know Ive done this before, but forgot how. In older
>> versions you had to turn off color mapping and explicitly set RGB
>> scalars, but those options went away after PVv4 if I remember.
>>
>>
>> example file;
>> gdalinfo NAIP_LVC_10m_UTM11_noalpha.tif
>> Driver: GTiff/GeoTIFF
>> Files: NAIP_LVC_10m_UTM11_noalpha.tif
>> Size is 9973, 10742
>> Coordinate System is:
>> PROJCS["NAD83 / UTM zone 11N",
>>     GEOGCS["NAD83",
>>         DATUM["North_American_Datum_1983",
>>             SPHEROID["GRS 1980",6378137,298.2572221010002,
>>                 AUTHORITY["EPSG","7019"]],
>>             TOWGS84[0,0,0,0,0,0,0],
>>             AUTHORITY["EPSG","6269"]],
>>         PRIMEM["Greenwich",0],
>>         UNIT["degree",0.0174532925199433],
>>         AUTHORITY["EPSG","4269"]],
>>     PROJECTION["Transverse_Mercator"],
>>     PARAMETER["latitude_of_origin",0],
>>     PARAMETER["central_meridian",-117],
>>     PARAMETER["scale_factor",0.9996],
>>     PARAMETER["false_easting",500000],
>>     PARAMETER["false_northing",0],
>>     UNIT["metre",1,
>>         AUTHORITY["EPSG","9001"]],
>>     AUTHORITY["EPSG","26911"]]
>> Origin = (295410.592907027050387,4229149.359127406030893)
>> Pixel Size = (7.891650661980430,-7.891650661980430)
>> Metadata:
>>   AREA_OR_POINT=Area
>> Image Structure Metadata:
>>   INTERLEAVE=PIXEL
>> Corner Coordinates:
>> Upper Left  (  295410.593, 4229149.359) (119d20' 9.74"W, 38d11'13.42"N)
>> Lower Left  (  295410.593, 4144377.248) (119d18'43.56"W, 37d25'25.04"N)
>> Upper Right (  374114.025, 4229149.359) (118d26'15.83"W, 38d12' 5.41"N)
>> Lower Right (  374114.025, 4144377.248) (118d25'22.76"W, 37d26'15.63"N)
>> Center      (  334762.309, 4186763.303) (118d52'37.93"W, 37d48'47.97"N)
>> Band 1 Block=9973x1 Type=Byte, ColorInterp=Red
>> Band 2 Block=9973x1 Type=Byte, ColorInterp=Green
>> Band 3 Block=9973x1 Type=Byte, ColorInterp=Blue
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