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.

(Compiled by KD)

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