Re: area_hi2lores question

From: Dennis Shea <shea_at_nyahnyahspammersnyahnyah>
Date: Tue Mar 09 2010 - 08:32:13 MST

  Note that area_hi2lores uses 'cell boundaries' not distance.
  Hence, it should work.

  ====
  FYI: http://www.ncl.ucar.edu/future_release.shtml

  Note: there will be a true conservative remap
  for rectilinear grids in 5.2.0

  Good luck
  D
>>
>>
>>
>> Ian Harris wrote:
>>> Hi
>>> I need to progressively loosen the resolution of a gridded dataset.
>>> For example, I have model output from INGVSX that is 160 (lats) x 320
>>> (lons).
>>> I would like to produce lower res versions, produced by taking
>>> consecutive 2x2 blocks of cells and weightlessly averaging them, then
>>> taking 3x3, and finally 4x4. These blocks do not overlap; they 'tile'
>>> the original grid.
>>> Obviously this would take a long time if I did it with loops!
>>> However, I found area_hi2lores, which looks as if it could help. What
>>> I need to know is this:
>>> If I give area_hi2lores some coordinates that point to the centres of
>>> tiled blocks of (say) 16 cells, will all 16 cells be included in the
>>> scope of the output value, or is the scope calculated as a circle of
>>> influence, thus missing the corner cells?
>>> _ _ _ _
>>> |X|_|_|X|
>>> |_|_|_|_|
>>> |_|_|_|_|
>>> |X|_|_|X|
>>> I hope I've explained that properly!
>>> Cheers
>>> Harry
>>> Ian "Harry" Harris
>>> Climatic Research Unit
>>> School of Environmental Sciences
>>> University of East Anglia
>>> Norwich NR4 7TJ
>>> United Kingdom
>>> IMPORTANT NOTICE - This email is intended for the named recipient
>>> only. It may contain privileged and confidential information. If you
>>> are not the intended recipient, notify the sender immediately and
>>> destroy this email. You must not copy, distribute or take action in
>>> reliance upon it. Whilst all efforts are made to safeguard emails,
>>> The School of Environmental Sciences cannot guarantee that
>>> attachments are virus free or compatible with your systems and does
>>> not accept liability in respect of viruses or computer problems

[SNIP]
_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Tue Mar 9 08:32:18 2010

This archive was generated by hypermail 2.1.8 : Thu Mar 11 2010 - 11:17:07 MST