Ah great, thanks Elizabeth (and Matt). One followup, what if my derived field depends on a user-specified field_parameter? I don't know how to use set_field_parameter() on the pf object. On Thu, Mar 14, 2013 at 1:24 PM, Elizabeth Tasker < tasker@astro1.sci.hokudai.ac.jp> wrote:

Hi Mike,

I had the same issue recently and Matt dug out the links on how to use them:

http://paste.yt-project.org/show/3142/

and the followup:

http://paste.yt-project.org/show/3143/

Elizabeth

On Mar 14, 2013, at 4:15 PM, Michael Kuhlen wrote:

I'd like to try out the saving derived fields feature that was discussed here http://lists.spacepope.org/pipermail/yt-users-spacepope.org/2013-February/00...

Unfortunately the merge (PR #416) is one of the ones whose comments are lost because of a deleted repository. Could someone here explain how to use this functionality, i.e. how to save a derived field to disk by writing out a GDF file? Or point me to the place in the docs where this is discussed?

Thanks!

Mike

-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * ********************************************************************* _______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

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-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * *********************************************************************

Right, I realized that myself and ended up adding a field_parameters keyword to writer.save_field(). It ends up calling set_field_parameter in the loop over pf.h.grids in _write_field_to_gdf(): https://bitbucket.org/mqk/yt/commits/057d444c7e925b2ba06471cc8e479329352ead0... On Thu, Mar 14, 2013 at 2:30 PM, Matthew Turk wrote:

Hi Mike and Elizabeth (and Andrew Myers too!),

If any of you would be willing to write up a brief description of this for the documentation, it would be greatly appreciated.

Mike, you can do this by setting it on the grids:

for g in pf.h.grids: g.set_field_parameters("favorite_movie", "bttf")

-Matt

On Thu, Mar 14, 2013 at 5:03 PM, Michael Kuhlen wrote:

...

Ah great, thanks Elizabeth (and Matt). One followup, what if my derived field depends on a user-specified field_parameter? I don't know how to use set_field_parameter() on the pf object.

On Thu, Mar 14, 2013 at 1:24 PM, Elizabeth Tasker wrote:

...

Hi Mike,

I had the same issue recently and Matt dug out the links on how to use them:

http://paste.yt-project.org/show/3142/

and the followup:

http://paste.yt-project.org/show/3143/

Elizabeth

On Mar 14, 2013, at 4:15 PM, Michael Kuhlen wrote:

I'd like to try out the saving derived fields feature that was discussed here

http://lists.spacepope.org/pipermail/yt-users-spacepope.org/2013-February/00...

...

Unfortunately the merge (PR #416) is one of the ones whose comments are lost because of a deleted repository. Could someone here explain how to

use

...

this functionality, i.e. how to save a derived field to disk by writing out a GDF file? Or point me to the place in the docs where this is discussed?

Thanks!

Mike

-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * ********************************************************************* _______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * *********************************************************************

_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

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-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * *********************************************************************

Hi Matt, I just created a set of sample notebooks that illustrate the process. Saving: https://hub.yt-project.org/nb/upt2sf Reading: https://hub.yt-project.org/nb/ds1g1t Sorry for not doing this sooner; I hope nobody spent too much time trying to figure out the process by themselves. -Andrew On Thu, Mar 14, 2013 at 2:30 PM, Matthew Turk wrote:

Hi Mike and Elizabeth (and Andrew Myers too!),

If any of you would be willing to write up a brief description of this for the documentation, it would be greatly appreciated.

Mike, you can do this by setting it on the grids:

for g in pf.h.grids: g.set_field_parameters("favorite_movie", "bttf")

-Matt

On Thu, Mar 14, 2013 at 5:03 PM, Michael Kuhlen wrote:

...

Ah great, thanks Elizabeth (and Matt). One followup, what if my derived field depends on a user-specified field_parameter? I don't know how to use set_field_parameter() on the pf object.

On Thu, Mar 14, 2013 at 1:24 PM, Elizabeth Tasker wrote:

...

Hi Mike,

I had the same issue recently and Matt dug out the links on how to use them:

http://paste.yt-project.org/show/3142/

and the followup:

http://paste.yt-project.org/show/3143/

Elizabeth

On Mar 14, 2013, at 4:15 PM, Michael Kuhlen wrote:

I'd like to try out the saving derived fields feature that was discussed here

http://lists.spacepope.org/pipermail/yt-users-spacepope.org/2013-February/00...

...

Unfortunately the merge (PR #416) is one of the ones whose comments are lost because of a deleted repository. Could someone here explain how to

use

...

this functionality, i.e. how to save a derived field to disk by writing out a GDF file? Or point me to the place in the docs where this is discussed?

Thanks!

Mike

-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * ********************************************************************* _______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org

-- ********************************************************************* * * * Dr. Michael Kuhlen Theoretical Astrophysics Center * * email: mqk@astro.berkeley.edu UC Berkeley * * cell phone: (831) 588-1468 B-116 Hearst Field Annex # 3411 * * skype username: mikekuhlen Berkeley, CA 94720 * * * *********************************************************************

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