[FLASH-USERS] QuickFlash Interpolation Question

[John ZuHone]

Oh, sorry Sam... I didn't see you had tried using map_uniform already. My apologies.

John 

On Feb 17, 2010, at 2:11 PM, Nathan Hearn wrote:

> On Wed, Feb 17, 2010 at 11:15, Samuel Friedman <friedman at astro.wisc.edu> wrote:
>> 1)  I managed to create very easily a 3D uniform grid from AMR data by
>> simply modifying the example routine in map_uniform.  Quite easy.
>> 2)  fidlr's merge_amr routine calls either the IDL function congrid (in
>> 2D) or rebin (in 3D).  In both cases, they simply use nearest neighbor
>> sampling.  So I think the "interpolation" should be really easy to
>> implement for QuickFlash.
> 
> Indeed, this sounds like something we could put together fairly easily.
> 
>> 3)  This is harder, but I tried using map_uniform on a simulation that
>> used a uniform grid and QuickFlash gave me an error message (about an
>> invalid neighbor code and that mesh information was not available).
> 
> Hmmm.... Were you using Flash's uniform grid mode, or did you make the
> minimum and maximum refinement levels equal to each other?  I really
> have not done any testing with the uniform grid mode.  Alternately,
> you may have come across a bug that has been fixed.
> If you wish to see the latest updates to the code -- but skip the
> bleeding-edge stuff -- check out the latest trunk code via
> 
> svn co https://quickflash.svn.sourceforge.net/svnroot/quickflash/trunk
> QuickFlash
> 
>> The main reason I looked into QuickFlash is that it was pretty much the
>> ONLY set of tools outside of IDL avaiable for analysis.  Ultimately, I
>> am looking for something without IDL's licensing agreement and fidlr3.0
>> does not seem to work properly with GDL.
> 
> That was my original impetus for writing QuickFlash, as well.  There
> seemed to be a big void in functionality and accessibility that
> neither proprietary programming languages nor large analysis packages
> could fill.  (And I am a fan of connecting libraries together to build
> one's own tools.)
> 
> Thank you very much for your comments!
> 
> 
> - Nathan