|
|
@@ -1,17 +1,15 @@
|
|
|
-<H2>DESCRIPTION</H2>
|
|
|
+<h2>DESCRIPTION</h2>
|
|
|
|
|
|
-<EM>i.oif</EM> calculates the Optimum Index Factor for LANDSAT TM bands 1,2,3,4,5 and 7.
|
|
|
-<P>
|
|
|
+<em>i.oif</em> calculates the Optimum Index Factor for LANDSAT TM bands 1,2,3,4,5 and 7.
|
|
|
+<p>
|
|
|
The Optimum Index Factor is calculated to determine the band combination which
|
|
|
shows the maximum information when combined into a composite image. The bands
|
|
|
-comprising the highest scoring combination from <EM>i.oif</EM> are used as the
|
|
|
-three color channels required for <EM><A HREF="d.rgb.html">d.rgb</A></EM> or
|
|
|
-<EM><A HREF="r.composite.html">r.composite</A></EM>.
|
|
|
-<P>
|
|
|
+comprising the highest scoring combination from <em>i.oif</em> are used as the
|
|
|
+three color channels required for <em>d.rgb</em> or <em>r.composite</em>.
|
|
|
+<p>
|
|
|
The analysis is saved to a file in the current directory called "i.oif.result".
|
|
|
|
|
|
-
|
|
|
-<H2>NOTES</H2>
|
|
|
+<h2>NOTES</h2>
|
|
|
|
|
|
Colour Composites in BGR order: important band combinations (example:
|
|
|
234 in BGR order means: B=2, G=3, R=4):
|
|
|
@@ -40,21 +38,30 @@ vegetational stress and mortality. Roads are less evident as band 3 is blue.
|
|
|
<li> 457: shows soil texture classes (clay, loam, sandy).
|
|
|
</ul>
|
|
|
|
|
|
+<h2>EXAMPLE</h2>
|
|
|
+
|
|
|
+North Carolina sample dataset:
|
|
|
+<div class="code"><pre>
|
|
|
+g.region rast=lsat7_2002_10 -p
|
|
|
+i.oif image1=lsat7_2002_10 image2=lsat7_2002_20 image3=lsat7_2002_30 \
|
|
|
+ image4=lsat7_2002_40 image5=lsat7_2002_50 image7=lsat7_2002_70
|
|
|
+</pre></div>
|
|
|
|
|
|
-<H2>REFERENCES</H2>
|
|
|
|
|
|
-Jensen, 1996. Introductory digital image processing, p.98. ISBN 0-13-205840-5
|
|
|
+<h2>REFERENCE</h2>
|
|
|
|
|
|
+Jensen, 1996. Introductory digital image processing. Prentice Hall, p.98. ISBN 0-13-205840-5
|
|
|
|
|
|
-<H2>SEE ALSO</H2>
|
|
|
-<EM><A HREF="d.rgb.html">d.rgb</A></EM><BR>
|
|
|
-<EM><A HREF="r.composite.html">r.composite</A></EM><BR>
|
|
|
-<EM><A HREF="r.covar.html">r.covar</A></EM><BR>
|
|
|
-<EM><A HREF="r.univar.html">r.univar</A></EM><BR>
|
|
|
-<BR>
|
|
|
+<h2>SEE ALSO</h2>
|
|
|
|
|
|
+<em>
|
|
|
+<a href="d.rgb.html">d.rgb</a>,
|
|
|
+<a href="r.composite.html">r.composite</a>,
|
|
|
+<a href="r.covar.html">r.covar</a>,
|
|
|
+<a href="r.univar.html">r.univar</a>
|
|
|
+</em>
|
|
|
|
|
|
-<H2>AUTHOR</H2>
|
|
|
+<h2>AUTHOR</h2>
|
|
|
|
|
|
Markus Neteler, ITC-Irst, Trento, Italy<br>
|
|
|
Updated to GRASS 5.7 by Michael Barton, Arizona State University
|
Markus Neteler