[Paraview] View geotiff in Paraview?

[Magician]

Hi Adam,


>>> I can?t seem to select Warp by Scalar from the
>>> texture map.
Warp By Scalar couldn’t apply to Image data directly.
So you should convert images to surfaces, and apply the warping filter.

    TIFF image
        -> Extract Surface
        -> Warp By Scalar (or Vector)

If your images are not 1 or 3 channels (cf. includes Alpha channel),
you should extract elevation channel(s) by Calculator Filter.


Magician


> Date: Wed, 19 Oct 2016 14:00:16 +0000
> From: Adam Dershowitz <adershowitz at exponent.com>
> To: "postgurke at web.de" <postgurke at web.de>, "paraview at paraview.org"
> 	<paraview at paraview.org>
> Subject: Re: [Paraview] View geotiff in Paraview?
> Message-ID: <A9FBA99B-896D-40B2-86A2-59A4321090FF at exponent.com>
> Content-Type: text/plain; charset="utf-8"
> 
> That does it.   
> Thank you!  
> 
> -- Adam
> 
> 
> 
> 
> 
> 
> 
> 
> On 10/19/16, 12:49 AM, "postgurke at web.de" <postgurke at web.de> wrote:
> 
>> Maybe there is a way to achieve what you want for tiff - but I am not aware of
>> it.
>> 
>> Would it be suitable for you to convert your data to the Netcdf format? That you
>> can import and then use the warp by scalar filter to show the elevation. This is
>> what I usually do for topography data.
>> 
>> Cheers
>> Venke
>> 
>> 
>> 
>>> Adam Dershowitz <adershowitz at exponent.com> hat am 18. Oktober 2016 um 16:19
>>> geschrieben:
>>> 
>>> 
>>> I did figure out how to load the texture.  But, now I?m just seeing a solid
>>> color on the plane.  This is because the region is fairly flat, at a higher
>>> elevation, and the tiff contains elevation data anyway.  
>>> So, this doesn?t do the job.  I can?t seem to select Warp by Scalar from the
>>> texture map.  
>>> Any other suggestions?
>>> 
>>> -- Adam
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On 10/18/16, 5:00 AM, "postgurke at web.de" <postgurke at web.de> wrote:
>>> 
>>>> Hi Adam
>>>> 
>>>> I usually make a vtp File with just a frame from the image coordinates. Then
>>>> I
>>>> can load the image as texture to the plane.
>>>> 
>>>> Cheers
>>>> Venke
>>>> 
>>>> 
>>>> 
>>>>> Adam Dershowitz <adershowitz at exponent.com> hat am 17. Oktober 2016 um 17:11
>>>>> geschrieben:
>>>>> 
>>>>> 
>>>>> I have a geotiff that I would like to view in preview.  I?m able to open
>>>>> it,
>>>>> and view it, but the problem is that the scale and origin are not correct.
>>>>> It
>>>>> seems that preview is just opening it as a TIFF and is ignoring the origin,
>>>>> corners and pixel size in the geotiff.  The problem is that I want to
>>>>> overlay
>>>>> some other polygons that are in a known location, so this placement is
>>>>> important (and off by hundreds of thousands of meters.)
>>>>> Can paraview open a geotiff?  If not, is there an easy way to just offset
>>>>> and
>>>>> scale data in Paraview?  It seems like it can be done by manually adding a
>>>>> Transform filter and then forcing it to scale and translate as necessary.
>>>>> Although getting it all lined up is not trivial.
>>>>> 
>>>>> Thanks,
>>>>> 
>>>>> 
>>>>> -- Adam