= MAPINFO.TXT =

== Description ==

This text file provides details about each map you have in the SPC system. You can use '''MAPINFO.TXT''' to identify problems, similar to the ways you use [[RESIDUALS.TXT]]. 

'''MAPINFO.TXT''' is created by [[residuals]]. 

 (!) The symbols that may show up in the Flag column are based on the parameters passed into [[residuals]]. 

Here is a sample '''MAPINFO.TXT''' file. Elements of the data in each of the three sections are explained below.

{{{

IA2_05    0.0200     49.1713    113.4101     11.7471       9       0       0     34.64   >>  10.36
IA3_01    0.0200     56.7760     84.8686     13.0224       3       0       0     34.64   **  11.00
IA3_05    0.0200     13.1041     95.9594     12.1615       4       0       0     34.64   >>   9.95
IA3_3G    0.0200     35.8062     91.8462     11.6549       7       0       0     34.64   >>   8.45


.........

 RMS POSITION UNCERTAINTY =    48.694768136505374
 NUMBER OF LANDMARKS =         4295

    A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R
A   1   1   2   1   2   1   1   1   1   1   1   1   1   1   1   1   1   1
B   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1
C   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1
D   2   2   2   1   1   1   1   2   1   1   1   1   1   1   1   1   2   2
E  66   1   2   1   1   1   1   1   1   1   1   2   1   1   2  28   1   2
F  30   5   1   1   1   1   1   1   1   1   1   2   1   1   1   2   2   2
G   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1
H   1   2   2   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1
I   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1   1

}}}

== Section 1 ==

The columns in the first set of output contain this information:

  * '''Column 1''' - landmark name
  * '''Column 2''' - landmark resolution
  * '''Columns 3-5''' - lat, lon, radius
  * '''Column 6''' - number of images contributing to landmark
  * '''Column 7''' - number of maplets the landmark overlaps
  * '''Column 8''' - number of images with landmark on limb
  * '''Column 9''' - magnitude of formal uncertainty in meters
  * '''Column 10''' - Flag, which may be:
   * >> - Flag showing landmarks that are below the pixel threshold 
  /!\ You might want to look at these further.
   * ** - Flag indicating fewer than 3 images were included
  * '''Column 11''' - RMS pixel/line vector residual of the nominals and position

== Section 2 ==

The two lines in this section present
 * the RMS of all the maplet's position uncertainty
 * the number of landmarks in use
 /!\ The landmark residual is in kilometers unless you include the line UNIT='METER' in [[INIT_LITHOS.TXT]].

== Section 3 ==

This matrix plots the number of landmarks in each region of the surface.  It uses 10-degree bins with vertical from 90 to -90 (A-I) and horizontal from 0-360 (A-R).  The maplet name is defined by this gridded region.

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''(Compiled by KD)''

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