Get Relative Shift/Scales
Get Relative Shift/Scales calculates the best relative shift (magnetics) or shift+scale (radiometrics) for each grid pair. The "relative" shift/scale is the shift/scale that will best level the two grids together. The results are stored in the Overlap Grids File. This is an ASCII file which can be edited in a text editor to change the weights that are associated with each overlap.
The aliases and parameters that must be set for this process (via the Set Aliases and Parameters menu) are shown in the table below.
|
Control File Keyword |
Type |
Description |
|
overlapPointsFileRel |
string |
The Overlap Points File. |
|
overlapGridsFileRel |
string |
The Overlap Grids File. This will be created in the Working Directory. |
|
minOverlapPointsRel |
integer |
The minimum number of overlap points for a grid pair required to calculate an adjustment. |
|
minDataSpreadRel |
float |
The minimum data spread of the data points in the overlap (km). If the spread is less than this, the overlap is not used. |
|
adjustmentType |
integer |
0 – scale only, 1 – shift only, 2 – shift and scale adjustment. |