Re: [Paraview] Reading netCDF files Earth models

2018-01-18 Thread Manochehr Bahavar 
Ken,

Your comments helped me a lot to see the issue and I appreciate you raising a 
bug on this.

Thanks again for your prompt replies.

Best,

—manoch



> On Jan 18, 2018, at 6:32 AM, Moreland, Kenneth  wrote:
> 
> Manochehr,
> 
> ParaView always renders in a Cartesian space. So if you want the 
> lat/lon/depth values to look like a sphere, the coordinates have to be 
> converted and you will loose the original values. I can see the point of your 
> use case. It just never came up before. It seems reasonable to be able to 
> save the original lat/lon values in a field, so I raised a bug for it.
> 
> https://gitlab.kitware.com/paraview/paraview/issues/17943 
> 
> 
> As far as getting the coordinates in a script, it is possible but not 
> recommended. If you need to access field or coordinate values directly, it is 
> usually best to do so in a programmable filter.
> 
> -Ken
> 
> Sent from my iPad
> 
> On Jan 18, 2018, at 7:06 AM, Manochehr Bahavar  > wrote:
> 
>> Hi Aashish,
>> 
>> Thank you for your reply. That will be great if it gets looked into:) Going 
>> back and forth between coordinate systems may be a little confusing, but I 
>> will give it a try and see how it works out.
>> 
>> 
>> Could you also point me in the right direction for getting the latitude, 
>> longitude and depth arrays? As I mentioned in my reply to Ken (below), using 
>> Python, I go as far as getting the extents and bounds but cannot get the 
>> actual values.
>> 
>> Thank you again for your quick reply and useful suggestions.
>> 
>> Best,
>> 
>> —manoch
>> 
>> 
>> 
>>> On Jan 17, 2018, at 10:29 PM, Aashish Chaudhary 
>>> mailto:aashish.chaudh...@kitware.com>> 
>>> wrote:
>>> 
>>> 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 
>>> mailto:man...@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 >>> > 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" 
 mailto:paraview-boun...@paraview.org> on 
 behalf of man...@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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Re: [Paraview] Reading netCDF files Earth models

2018-01-18 Thread Moreland, Kenneth 
Manochehr,

ParaView always renders in a Cartesian space. So if you want the lat/lon/depth 
values to look like a sphere, the coordinates have to be converted and you will 
loose the original values. I can see the point of your use case. It just never 
came up before. It seems reasonable to be able to save the original lat/lon 
values in a field, so I raised a bug for it.

https://gitlab.kitware.com/paraview/paraview/issues/17943

As far as getting the coordinates in a script, it is possible but not 
recommended. If you need to access field or coordinate values directly, it is 
usually best to do so in a programmable filter.

-Ken

Sent from my iPad

On Jan 18, 2018, at 7:06 AM, Manochehr Bahavar 
mailto:man...@iris.washington.edu>> wrote:

Hi Aashish,

Thank you for your reply. That will be great if it gets looked into:) Going 
back and forth between coordinate systems may be a little confusing, but I will 
give it a try and see how it works out.


Could you also point me in the right direction for getting the latitude, 
longitude and depth arrays? As I mentioned in my reply to Ken (below), using 
Python, I go as far as getting the extents and bounds but cannot get the actual 
values.

Thank you again for your quick reply and useful suggestions.

Best,

—manoch



On Jan 17, 2018, at 10:29 PM, Aashish Chaudhary 
mailto:aashish.chaudh...@kitware.com>> wrote:

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 
mailto:man...@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 
mailto:kmo...@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" 
mailto:paraview-boun...@paraview.org> on behalf 
of man...@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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Re: [Paraview] Reading netCDF files Earth models

2018-01-18 Thread Manochehr Bahavar 
Hi Aashish,

Thank you for your reply. That will be great if it gets looked into:) Going 
back and forth between coordinate systems may be a little confusing, but I will 
give it a try and see how it works out.


Could you also point me in the right direction for getting the latitude, 
longitude and depth arrays? As I mentioned in my reply to Ken (below), using 
Python, I go as far as getting the extents and bounds but cannot get the actual 
values.

Thank you again for your quick reply and useful suggestions.

Best,

—manoch



> On Jan 17, 2018, at 10:29 PM, Aashish Chaudhary 
>  wrote:
> 
> 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  > 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 > > 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" 
>> mailto:paraview-boun...@paraview.org> on 
>> behalf of man...@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
>>___
>>Powered by www.kitware.com 
>> 
>>Visit other Kitware open-source projects at 
>> http://www.kitware.com/opensource/opensource.html 
>> 
>> 
>>Please keep messages on-topic and check the ParaView Wiki at: 
>> http://paraview.org/Wiki/ParaView 
>> 
>>Search the list archives at: http://markmail.org/search/?q=ParaView 
>> 
>> 
>>Follow this link to subscribe/unsubscribe:
>>https://paraview.org/mailman/listinfo/paraview 
>> 
>> 
>> 
> 
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> 
> Please keep messages on-topic and check the ParaView Wiki at: 
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Re: [Paraview] Reading netCDF files Earth models

2018-01-17 Thread 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 <
man...@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  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-boun...@paraview.org on behalf of man...@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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>Please keep messages on-topic and check the ParaView Wiki at:
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>
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>
>
>
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Re: [Paraview] Reading netCDF files Earth models

2018-01-17 Thread Manochehr Bahavar 
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  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" 
>  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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>Please keep messages on-topic and check the ParaView Wiki at: 
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> 
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> 

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Re: [Paraview] Reading netCDF files Earth models

2018-01-17 Thread Moreland, Kenneth 
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" 
 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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