= distortion =

||Category DART||Version 1.0||

== Description ==
'''distortion''' 

== Input Files ==
 * [[DISTORTION.TXT]]



== Output Files ==
 * SHAPEFILES/[[COVERAGE.TXT]]


== Using distortion ==

'''Warning!''' A single bad REG file can cause major issues. Before running distortion, ensure that the .REG files have at least 7 stars (file size >1 KB) and that each stars is centered in its red cross hairs in TEMPFILE.ppm. You must be confident in every REG file to ensure that you don't shoot yourself in the foot.

1. Run '''shape_coverage'''.

{{{
shape_coverage
SHAPEFILES/SHAPE.TXT
smin smax tol minpic
}}}

where smin is the minimum maplet scale in km you wish to include, smax is the maximum maplet scale in km you wish to include, tol is a search range along surface normal (i.e., how far to search for a maplet; same idea as [[densify]]), and minpic in the minimum number of pictures. If set to 0, then all maplets will be considered.

2. Use [[COVERAGE.TXT]] as an input to shape2mapsA

{{{
shape2mapsA
SHAPEFILES/COVERAGE.TXT
}}}

3. Use [[view_shapeA]] to visualize the coverage on the shape. Note that if you only run [[view_shape]], you will not see the coverage.