[GRASS-dev] [GRASS GIS] #2376: Add p-value for regression slope in r series

[GRASS GIS]

#2376: Add p-value for regression slope in r series
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 Reporter:  mastho                        |       Owner:  grass-dev@…              
     Type:  enhancement                   |      Status:  new                      
 Priority:  normal                        |   Milestone:  7.0.0                    
Component:  Raster                        |     Version:  svn-releasebranch70      
 Keywords:  r.series, p-value regression  |    Platform:  Unspecified              
      Cpu:  Unspecified                   |  
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Changes (by pvanbosgeo):

 * cc: pvanbosgeo (added)


Comment:

 You can calculate the p-value using the scipy library (from
 http://stackoverflow.com/questions/17559897/python-p-value-
 from-t-statistic). For example, if tt is the t value

 {{{
 import scipy.stats as stats
 import numpy as np
 tt = 2.4
 n = 10
 pval = stats.t.sf(np.abs(tt), n-1)*2  (two-sided p-value)
 }}}

 Perhaps this can be used either to create a script or in r.series?

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2376#comment:2>
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