Tool Import from Virtual Raster (VRT)
The tool allows one to clip / extract a raster subset from a virtual raster dataset (VRT). Such a VRT is actually an XML based description of a mosaic of raster datasets and can be created with the "Create Virtual Raster (VRT)" tool.
References
- GDAL/OGR contributors (2019): GDAL/OGR Geospatial Data Abstraction software Library. A translator library for raster and vector geospatial data formats. Open Source Geospatial Foundation. Link.
- Author: V. Wichmann (c) 2019
- Menu: File|Grid|Import
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Shapes Extent | Shapes, input | SHAPES | The shapefile defining the clipping extent. | - |
| Output | Grids | Grid list, output | GRIDS | - | - |
| Options | VRT Filename | File path | VRT_NAME | The full path and name of the .vrt file. | - |
| Extent | Choice | EXTENT | Choose how to define the clipping extent. | Available Choices: [0] user defined [1] grid system [2] shapes extent Default: 0 | |
| Grid System | Grid system | GRIDSYSTEM | The target grid system. | - | |
| Left | Floating point | XMIN | The minimum x-coordinate of the clipping extent. | Default: 0.000000 | |
| Right | Floating point | XMAX | The maximum x-coordinate of the clipping extent. | Default: 0.000000 | |
| Bottom | Floating point | YMIN | The minimum y-coordinate of the clipping extent. | Default: 0.000000 | |
| Top | Floating point | YMAX | The maximum y-coordinate of the clipping extent. | Default: 0.000000 | |
| Buffer | Floating point | BUFFER | The optional buffer added to the clipping extent [map units]. | Minimum: 0.000000 Default: 0.000000 | |
| Multiple Bands Output | Choice | MULTIPLE | Choose how to handle output datasets with multiple bands. | Available Choices: [0] single grids [1] grid collection [2] automatic Default: 2 | |
| Transformation | Boolean | TRANSFORM | Align grid to coordinate system. | Default: 1 | |
| Resampling | Choice | RESAMPLING | Resampling type to be used, if grid needs to be aligned to coordinate system. | Available Choices: [0] Nearest Neighbour [1] Bilinear Interpolation [2] Bicubic Spline Interpolation [3] B-Spline Interpolation Default: 0 |
Command-line
Usage: saga_cmd io_gdal 13 [-VRT_NAME <str>] [-GRIDS <str>] [-EXTENT <str>] [-GRIDSYSTEM_D <double>] [-GRIDSYSTEM_X <double>] [-GRIDSYSTEM_Y <double>] [-GRIDSYSTEM_NX <num>] [-GRIDSYSTEM_NY <num>] [-GRIDSYSTEM_FILE <str>] [-SHAPES <str>] [-XMIN <double>] [-XMAX <double>] [-YMIN <double>] [-YMAX <double>] [-BUFFER <double>] [-MULTIPLE <str>] [-TRANSFORM <str>] [-RESAMPLING <str>] -VRT_NAME:<str> VRT Filename File path -GRIDS:<str> Grids Grid list, output -EXTENT:<str> Extent Choice Available Choices: [0] user defined [1] grid system [2] shapes extent Default: 0 -GRIDSYSTEM_D:<double> Cell Size -GRIDSYSTEM_X:<double> Lower Left Center Cell X-Coordinate -GRIDSYSTEM_Y:<double> Lower Left Center Cell Y-Coordinate -GRIDSYSTEM_NX:<num> Number of Columns -GRIDSYSTEM_NY:<num> Number of Rows -GRIDSYSTEM_FILE:<str> Grid File -SHAPES:<str> Shapes Extent Shapes, input -XMIN:<double> Left Floating point Default: 0.000000 -XMAX:<double> Right Floating point Default: 0.000000 -YMIN:<double> Bottom Floating point Default: 0.000000 -YMAX:<double> Top Floating point Default: 0.000000 -BUFFER:<double> Buffer Floating point Minimum: 0.000000 Default: 0.000000 -MULTIPLE:<str> Multiple Bands Output Choice Available Choices: [0] single grids [1] grid collection [2] automatic Default: 2 -TRANSFORM:<str> Transformation Boolean Default: 1 -RESAMPLING:<str> Resampling Choice Available Choices: [0] Nearest Neighbour [1] Bilinear Interpolation [2] Bicubic Spline Interpolation [3] B-Spline Interpolation Default: 0