[GRASS-user] low radiance values after i.atcor and i.topo.corr

[Nikos Alexandris]

Not sure if this helps... (!)
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> r.univar change_pca_250m_06.239_07.242.2_test
 100%
total null and non-null cells: 247720
total null cells: 162432

Of the non-null cells:
----------------------
n: 85288
minimum: -0.315021
maximum: 0.260252
range: 0.575273
mean: -0.000584902
mean of absolute values: 0.0129577
standard deviation: 0.0191773
variance: 0.00036777
variation coefficient: -3278.73 %
sum: -49.8850918202

> r.univar change_pca_250m_06.239_07.242.1_test
 100%
total null and non-null cells: 247720
total null cells: 162432

Of the non-null cells:
----------------------
n: 85288
minimum: -0.513804
maximum: 0.394813
range: 0.908617
mean: 0.0211992
mean of absolute values: 0.032389
standard deviation: 0.042701
variance: 0.00182337
variation coefficient: 201.428 %
sum: 1808.0350767233

>cat sig_cluster_test 
#produced by i.cluster
#Class 1
23
0.014645 -0.107214 
0.000473 
0.000026 0.000349 
#Class 2
37
-0.014961 -0.076135 
0.000157 
0.000027 0.000139 
#Class 3
52
0.002926 -0.056125 
0.000124 
-0.000012 0.000061 
#Class 4
35
-0.028285 -0.040243 
0.000049 
0.000003 0.000105 
#Class 5
73
-0.004751 -0.035473 
0.000021 
-0.000002 0.000035 

[...]