Error_evaluation - SPC Wiki

Describe Error_evaluation here.

Here are a list of error evaluation tools and ideas

formal uncertainty -- standard, bottom of the RESIDUALS.TXT. Contains the fit of all the landmarks and overlaps.
Best 80% of landmarks. Taken from ?
CompareOBJ
CompareOBJ TR
CompareOBJ --save-plate-error error
diffShape and gnuplot delta.gpi
SIGMAS.TXT plotted with sig.gpi
2D heat map plot of number of images in landmarks
2D heat map plot of residual errors for landmark
2D heat map plot of residual errors for images
Evaluation of delta between truth S/C position and solved for S/C position: as an RMS
2D plot of delta between truth S/C position and solved for S/C position.
Number of "issues" (or >>) in MAPINFO, PICINFO and RESIDUALS.TXT

To Do

General info about error -- as I try to figure out what is best to use

RESIDUALS

img x, y val val
overlap x, y val val
img x, y val val
- The 1st column is a list of 1. IMAGEFILES included in the landmark 2. overlaps with other landmarks 3. Limbs
- The 2nd column is the error in deltaX (# pixels in image resolution)
- The 3rd column is the error in deltaY (# pixels in image resolution)
- The 4th column is the magnitude of the error (combines deltaX and deltaY)
- The 5th column is the error in physical units (km)
.........................
name val
- (Bottom)
  - Meter resolution, difference between predicted and actual
- (Very bottom)
  - Observations how many things RMS Residual (m) (vector residual)

MAPINFO.TXT name ........ val val

col 9 formal uncertainty in meters of the landmark position
col 10 Flag
">>" Flag showing landmarks that are below the pixel threshold. You might want to look at.
"**" Fewer than 3 images
col 11 Residual in meters of the nominals and position

PICINFO.TXT name ....... val dx, dy, dz dCx, dCy, dCz