[Grasper-users] Question about preparing data

[Josh R. <jro...@ku...>]

I think I have a protocol for getting data from GRASS into a format that
GRASP can handle.  I'd like to see if people agree that it is correct.

I want to predict the range of a species from museum data (presense
only).  

I have a series of environmental raster maps, all with identical
metadata.  

I want to take a site list of known presenses, and use s.sample to get
the environmental data at each site.  A little work with sed and awk
should put the output of those into the right format for the Xs.  A
similar trick should get Xpreds for every site covered by the
environmental data.

The Ys will be the known presenses plus randomly generated
pseudo-absenses.  I'll just generate a sites list that includes
everything but the known presenses, and use s.random to get a reasonable
number of pseudo-absenses.

My questions are: Is this correct and reasonable, and is there an easier
way?  I know there are hooks between GRASS and GRASP, but I don't know
if they can help with data entry.

-- 
Joshua Rosenau                         1345 Jayhawk Boulevard/Dyche Hall
(785) 864-4159                                   Lawrence, KS 66045-7561
 I used to think that the brain was the most wonderful organ in my body.  
        Then I realized who was telling me this. -- Emo Phillips