[GRASS-SVN] r67666 - grass-addons/grass7/imagery/i.wi

[svn_grass at osgeo.org]

Author: ychemin
Date: 2016-01-25 06:07:55 -0800 (Mon, 25 Jan 2016)
New Revision: 67666

Modified:
   grass-addons/grass7/imagery/i.wi/i.wi.html
   grass-addons/grass7/imagery/i.wi/main.c
Log:
typo fix + manual update with references

Modified: grass-addons/grass7/imagery/i.wi/i.wi.html
===================================================================
--- grass-addons/grass7/imagery/i.wi/i.wi.html	2016-01-25 13:39:49 UTC (rev 67665)
+++ grass-addons/grass7/imagery/i.wi/i.wi.html	2016-01-25 14:07:55 UTC (rev 67666)
@@ -2,7 +2,13 @@
 
 <em>i.wi</em> calculates water indices based on biophysical parameters. 
 
-1. LSWI: Land Surface Water Index 
+<ul>
+  <li>AWEI: Automated Water Extraction Index (2 versions: no shadow or shadow</li>
+  <li>LSWI: Land Surface Water Index </li>
+  <li>NDWI: Normalized Difference Water Index (2 versions: McFeeters or Xu)</li>
+  <li>TCW: Tasseled Cap Water</li>
+  <li>WI: Water Index</li>
+</ul>
 
 
 <h2>NOTES</h2>
@@ -11,6 +17,40 @@
 <h2>TODO</h2>
 Find other water indices and add them.
 
+<h2>REFERENCES</h2>
+
+<ul>
+<li>AWEI: Automated Water Extraction Index<br>
+    Feyisa, G.L., Meilby, H., Fensholt, R., Proud, S.R. (2014). 
+    Automated Water Extraction Index: A new technique for surface water mapping using Landsat imagery. 
+    Remote Sensing of Environment, 140, 23–35. http://dx.doi.org/10.1016/j.rse.2013.08.029. </li>
+
+<li>LSWI: Land Surface Water Index<br>
+    a kind of Normalized Difference Water Index
+    Xiao X., Boles S., Frolking S., Salas W., Moore B., Li C., et al. (2002)
+    Landscape-scale characterization of cropland in China using vegetation and Landsat TM images.
+    International Journal of Remote Sensing, 23:3579-3594. </li>
+
+<li>NDWI McFeeters<br>
+    McFeeters, S.K. (1996). 
+    The use of the Normalized Difference Water Index (NDWI) in the delineation of open water features. 
+    International Journal of Remote Sensing, 17, 1425–1432. http://dx.doi.org/10.1080/01431169608948714. </li>
+
+<li>NDWI Xu<br>
+    Xu, H. (2006). 
+    Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery. 
+    International Journal of Remote Sensing, 27, 3025–3033. http://dx.doi.org/10.1080/01431160600589179.</li>
+
+<li>TCW <br>
+    Crist, E.P. (1985). 
+    A TM tasseled cap equivalent transformation for reflectance factor data.
+    Remote Sensing of Environment, 17, 301–306. </li> 
+
+<li>WI <br>
+    Fisher, A., Flood, N., Danaher, T. (2016).
+    Comparing Landsat water index methods for automated water classification in eastern Australia. 
+    Remote Sensing of Environment, 175, 167-182. ISSN 0034-4257, http://dx.doi.org/10.1016/j.rse.2015.12.055.</li>
+
 <h2>SEE ALSO</h2>
 
 <em>
@@ -19,7 +59,7 @@
 
 
 <h2>AUTHORS</h2>
-Yann Chemin, International Rice Research Institute, The Philippines<br>
+GRASS Development Team<br>
 
 
 <p>

Modified: grass-addons/grass7/imagery/i.wi/main.c
===================================================================
--- grass-addons/grass7/imagery/i.wi/main.c	2016-01-25 13:39:49 UTC (rev 67665)
+++ grass-addons/grass7/imagery/i.wi/main.c	2016-01-25 14:07:55 UTC (rev 67666)
@@ -185,7 +185,7 @@
 
     if (!strcasecmp(wiflag, "wi") && (!(opt.nir->answer)
                 || !(opt.green->answer) || !(opt.red->answer)
-                || !(opt.chan5->answer) || !(opt.chan7chan->answer)) )
+                || !(opt.chan5->answer) || !(opt.chan7->answer)) )
         G_fatal_error(_("wi requires green, red, nir, chan5 and chan7 maps"));
 
     /***************************************************/