r.texture: update manual

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@69899 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.texture/main.c

@@ -149,7 +149,9 @@ int main(int argc, char *argv[])
 
     flag_ind = G_define_flag();
     flag_ind->key = 's';
-    flag_ind->description = _("Separate output for each angle (0, 45, 90, 135)");
+    flag_ind->label = _("Separate output for each angle (0, 45, 90, 135)");
+    flag_ind->description = _("Angles are counterclockwise from east: "
+                              "0 is East to West, 45 is North-East to South-West");
 
     flag_all = G_define_flag();
     flag_all->key = 'a';

raster/r.texture/r.texture.html

@@ -40,9 +40,10 @@ North-West - South-East.
 <p>
 <em>r.texture</em> assumes grey levels ranging from 0 to 255 as input. 
 The input is automatically rescaled to 0 to 255 if the input map range is outside
-of this range.  In order to reduce noise in the input data, and to speed up processing, 
-it is recommended that the user recode the data using equal-probability quantization. 
-Quantization rules for <em>r.recode</em> can be generated with <em>r.quantile -r</em>
+of this range or within the range [0, 1]. In order to reduce noise in the 
+input data, and to speed up processing, it is recommended that the user 
+recode the data using equal-probability quantization. Quantization rules 
+for <em>r.recode</em> can be generated with <em>r.quantile -r</em>
 using e.g 16 or 32 quantiles (see example below).