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)