preprocessing
preprocessing
Functions
| Name | Description |
|---|---|
| distance_to_corners | Generate buffer distances to corner and centre coordinates of raster |
| distance_to_samples | Generate buffer distances to x,y coordinates. |
| one_hot_encode | One-hot encoding of a RasterLayer. |
| rotated_coordinates | Generate 2d arrays with n_angles rotated coordinates. |
| xy_coordinates | Fill 2d arrays with their x,y indices. |
distance_to_corners
preprocessing.distance_to_corners(layer, file_path, driver='GTiff')
Generate buffer distances to corner and centre coordinates of raster extent.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
layer |
pyspatialml.RasterLayer, or rasterio.DatasetReader | required | |
file_path |
str | File path to save to the resulting Raster object | required |
driver |
(str, optional.optional.Default is GTiff) | GDAL driver to use to save raster. | 'GTiff' |
Returns
| Type | Description |
|---|---|
| pyspatialml.Raster object |
distance_to_samples
preprocessing.distance_to_samples(layer, file_path, rows, cols, driver='GTiff')
Generate buffer distances to x,y coordinates.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
layer |
pyspatialml.RasterLayer, or rasterio.DatasetReader | RasterLayer to use as a template. | required |
file_path |
str | File path to save to the resulting Raster object. | required |
rows |
1d numpy array | array of row indexes. | required |
cols |
1d numpy array | array of column indexes. | required |
driver |
str | GDAL driver to use to save raster. | 'GTiff' |
Returns
| Type | Description |
|---|---|
| pyspatialml.Raster object |
one_hot_encode
preprocessing.one_hot_encode(layer, file_path, categories=None, driver='GTiff')
One-hot encoding of a RasterLayer.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
layer |
pyspatialml.pyspatialml.RasterLayer | Containing categories to perform one-hot encoding on. | required |
file_path |
str | File path to save one-hot encoded raster. | required |
categories |
(list, ndarray) | Optional list of categories to extract. Default performs one-hot encoding on all categorical values in the input layer. | None |
driver |
(str, options.options.Default is GTiff) | GDAL-compatible driver. | 'GTiff' |
Returns
| Type | Description |
|---|---|
| pyspatialml.pyspatialml.Raster | Each categorical value is encoded as a layer with a Raster object. |
rotated_coordinates
preprocessing.rotated_coordinates(layer, file_path, n_angles=8, driver='GTiff')
Generate 2d arrays with n_angles rotated coordinates.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
layer |
pyspatialml.RasterLayer, or rasterio.DatasetReader | RasterLayer to use as a template. | required |
n_angles |
(int, optional.optional.Default is 8) | Number of angles to rotate coordinate system by. | 8 |
driver |
(str, optional.optional.Default is GTiff) | GDAL driver to use to save raster. | 'GTiff' |
Returns
| Type | Description |
|---|---|
| pyspatialml.pyspatialml.Raster |
xy_coordinates
preprocessing.xy_coordinates(layer, file_path, driver='GTiff')
Fill 2d arrays with their x,y indices.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
layer |
pyspatialml.RasterLayer, or rasterio.DatasetReader | RasterLayer to use as a template. | required |
file_path |
str | File path to save to the resulting Raster object.s | required |
driver |
(str, options.options.Default is GTiff) | GDAL driver to use to save raster. | 'GTiff' |
Returns
| Type | Description |
|---|---|
| pyspatialml.Raster object |