Re: [Matplotlib-users] Basemap interp nearest neighbor

[Jeff W. <js...@fa...>]

On 3/7/11 7:38 AM, Aman Thakral wrote:
> On a similar note, are there any alternatives available to nearest 
> neighbor?  For example, kriging?  I remember seeing a geostats library 
> in python (hpgl i think), but I found the API rather impractical and 
> difficult to use.
>
> Thanks,
> Aman

Aman:  The basemap interp function is just a convenience function for 
simple regridding (linear, cubic and nearest neighbor).  
scipy.interpolate 
(http://docs.scipy.org/doc/scipy/reference/interpolate.html) provides 
many more options.

-Jeff
>
> On Mon, Mar 7, 2011 at 8:23 AM, Jeff Whitaker <js...@fa... 
> <mailto:js...@fa...>> wrote:
>
>     On 3/7/11 5:50 AM, Jeff Whitaker wrote:
>     > On 3/6/11 8:58 PM, Juan A. Saenz wrote:
>     >> Hi,
>     >>
>     >> I use Basemap and netCDF4-python on a regular basis, and find them
>     >> very useful tools. Thank you for developing them!
>     >>
>     >> I noticed that when using basemap.interp for nearest neighbor
>     >> (order=0) the interpolation is not masked, and nearest neighbor
>     masked
>     >> values will be used in the interpolation. I was wondering if
>     you could
>     >> suggest a way to do nearest neighbor interpolation where masked are
>     >> supported, i.e. nearest neighbor values that are not masked.
>     >>
>     >> Thanks for your help,
>     >> Juan
>     >>
>     > Juan:  I agree that this would be desirable behavior.
>      Unfortunately,
>     > it's not obvious to me how to do it.  I'll think about it and
>     get back
>     > to you.  (cc'ing matplotlib-users list).
>     >
>     > -Jeff
>     >
>
>     Juan: On second thought, I'm not sure this is desirable behavior.  I
>     would guess that most of the time, if a nearest neighbor is
>     masked, the
>     user would expect the interpolation routine to return a masked
>     value.  I
>     would be interested to hear what others think.
>
>     -Jeff
>
>
>     ------------------------------------------------------------------------------
>     What You Don't Know About Data Connectivity CAN Hurt You
>     This paper provides an overview of data connectivity, details
>     its effect on application quality, and explores various alternative
>     solutions. http://p.sf.net/sfu/progress-d2d
>     _______________________________________________
>     Matplotlib-users mailing list
>     Mat...@li...
>     <mailto:Mat...@li...>
>     https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>