Changes between Version 3 and Version 4 of DevWikiRealParameters

Timestamp:

Nov 29, 2011, 8:56:51 AM (12 years ago)

Author:

bnordgren

Comment:

—

DevWikiRealParameters

@@ -14 +14 @@
 
 Although these parameters have "common names" within the GIS community, the names are both lengthy and misleading. Within the context of this page, the coefficients o,,11,,, o,,12,,, o,,21,,, and o,,22,, will be used.
+
+This page is divided into sections. Each section describes the computation of one physically significant parameter.
+
+== Pixel size in the '''i''' direction ==
+
+To calculate the pixel size in the '''i''' direction, the '''i''' unit vector is projected using the given transform. This gives the basis vector '''i,,b,,''', the magnitude of which is the pixel size. The basis vector is expressed as follows:
+
+[[Image(basisvector_i.png)]]
+
+The pixel size is then calculated as follows:
+
+[[Image(basisvectormag_i.png)]]
 
 == The forward calculation ==