Tool BSL
Boehner's Simple Language (BSL) is a macro script language for grid cell based calculations. BSL has been developed by C. Trachinow and J. Boehner originally as part of the grid analysis software SADO, 'System fuer die Analyse Diskreter Oberflaechen'.
References:
Boehner, J., Koethe, R., Trachinow, C. (1997): Weiterentwicklung der automatischen Reliefanalyse auf der Basis von digitalen Gelaendemodellen. – Göttinger Geogr. Abh. 100: 3-21.
- Author: SAGA User Group Associaton (c) 2009
- Menu: Grid|Calculus|BSL
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Output | Output (*) | Grid list, output, optional | OUTPUT | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| BSL Script | Long text | BSL | - | Default: Matrix R(), NIR(), NDVI, RANGE;
Point p;
NDVI = R;
RANGE = R;
foreach p in R do
{
NDVI[p] = (NIR[p] - R[p]) / (NIR[p] + R[p]);
RANGE[p] = max8(p, R) - min8(p, R);
}
showMatrix(NDVI);
showMatrix(RANGE);
|
| Show Progress | Boolean | PROGRESS | - | Default: 1 |
| (*) optional |
Command-line
Usage: saga_cmd grid_calculus_bsl 0 [-PARAMETERS_GRID_SYSTEM_D <double>] [-PARAMETERS_GRID_SYSTEM_X <double>] [-PARAMETERS_GRID_SYSTEM_Y <double>] [-PARAMETERS_GRID_SYSTEM_NX <num>] [-PARAMETERS_GRID_SYSTEM_NY <num>] [-PARAMETERS_GRID_SYSTEM_FILE <str>] [-OUTPUT <str>] [-BSL <str>] [-PROGRESS <str>]
-PARAMETERS_GRID_SYSTEM_D:<double> Cell Size
-PARAMETERS_GRID_SYSTEM_X:<double> Lower Left Center Cell X-Coordinate
-PARAMETERS_GRID_SYSTEM_Y:<double> Lower Left Center Cell Y-Coordinate
-PARAMETERS_GRID_SYSTEM_NX:<num> Number of Columns
-PARAMETERS_GRID_SYSTEM_NY:<num> Number of Rows
-PARAMETERS_GRID_SYSTEM_FILE:<str> Grid File
-OUTPUT:<str> Output
Grid list, output, optional
-BSL:<str> BSL Script
Long text
Default: Matrix R(), NIR(), NDVI, RANGE;
Point p;
NDVI = R;
RANGE = R;
foreach p in R do
{
NDVI[p] = (NIR[p] - R[p]) / (NIR[p] + R[p]);
RANGE[p] = max8(p, R) - min8(p, R);
}
showMatrix(NDVI);
showMatrix(RANGE);
-PROGRESS:<str> Show Progress
Boolean
Default: 1