[Paraview] Reading netCDF files Earth models

[Aashish Chaudhary]

Hi Manoch,

I think what you want is not possible right now but let us get back to you
on it as something we might want to look into before we can say it for
sure. One workaround would be you load the data (uncheck the sphere
coordinate system), apply the filter, and then write the data back as
NetCDF. It is not ideal by any means. You can also look into
vtkSphericalTransform (if you want to convert data back to spherical
coordinate system) but you will not get the exact shape of earth which is a
ellipsoid (which I am not sure if you would be interested in anyways).

Hope this helps.

On Wed, Jan 17, 2018 at 7:12 PM Manochehr Bahavar <
manoch at iris.washington.edu> wrote:

> Ken,
>
> Thanks for your reply. The problem with that approach is that all the
> features I am interested in make sense if they are plotted on a sphere
> (they approximate the Earth surface). So, there is no builtin solution for
> that?
>
> One more question: How can I access the actual latitude, longitude and
> depth parameter values using Python. I can see their extent and bounds, but
> I can not see how I can access the individual values:
>
> temp.GetBounds()
> (0.0, 359.0, -89.0, 89.0, -2750.0, 50.0)
> temp.GetDimensions()
> (360, 179, 57)
> temp.GetExtent()
> (0, 359, 0, 178, 0, 56)
> temp.GetCenter()
> (179.5, 0.0, -1350.0)
> temp.GetNumberOfPoints()
> 3673080L
>
> Really appreciate your help
>
> —manoch
>
>
> On Jan 17, 2018, at 3:57 PM, Moreland, Kenneth <kmorel at sandia.gov> wrote:
>
> Manochehr,
>
> If you uncheck the “Spherical Coordiantes” option, then the longitude,
> latitude, and depth values will be preserved as x, y, and z coordinates.
> (Instead of translated to a sphere, the data will appear in a rectangle.)
>
> -Ken
>
>
> On 1/17/18, 4:34 PM, "ParaView on behalf of Manochehr Bahavar" <
> paraview-bounces at paraview.org on behalf of manoch at iris.washington.edu>
> wrote:
>
>    Hello,
>
>    I am trying to see if I can visualize my netCDF Earth models
> (longitude, latitude,depth) using ParaView. I have been able to load the
> models, with the "Spherical Coordinates" option selected. However it
> appears that I now lose my coordinates and depth values and as a result to
> extract a subset, I have to use the depth index (not the actual depth
> value). Is there a way to preserve the latitude, longitude and depth values
> and work with ParaView using the actual values (not their index) directly?
>
>    Thank you,
>
>    —manoch
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