RSGISLib Projection Tools
Representation
- rsgislib.tools.projection.get_epsg_code_from_wkt(wkt_str: str) int
Using GDAL to return the EPSG code for inputted WKT string.
- Returns
the EPSG code.
- rsgislib.tools.projection.get_wkt_from_epsg_code(epsg_code: int) str
Using GDAL to return the WKT string for inputted EPSG Code.
- Parameters
epsg_code – integer variable of the epsg code.
- Returns
string with WKT representation of the projection.
GDAL / OSR
- rsgislib.tools.projection.get_osr_prj_obj(epsg_code: int) <osgeo.osr.SpatialReference; proxy of <Swig Object of type 'OSRSpatialReferenceShadow *' at 0x7f1cc4271c90> >
A function which returns an OSR SpatialReference object for a given EPSG code.
- Parameters
epsg_code – An EPSG code for the projection. Must be an integer.
- Returns
osr.SpatialReference object.
Conversion
- rsgislib.tools.projection.degrees_to_metres(latitude: float, lon_size: float, lat_size: float) -> (<class 'float'>, <class 'float'>)
Convert pixel sizes or distances in degrees to metres.
- Parameters
latitude – latitude
lon_size – numpy array of x pixel sizes (degrees)
lat_size – numpy array of y pixel sizes (degrees)
- Returns
x_size (numpy array of x pixel sizes (m)), y_size (numpy array of y pixel sizes (m))
from rsgislib import tools x_size, y_size = tools.degrees_to_metres(52,1.0,1.0)
- rsgislib.tools.projection.metres_to_degrees(latitude: float, x_size: float, y_size: float) -> (<class 'float'>, <class 'float'>)
Convert pixel sizes or distances in metres to degrees.
- Parameters
latitude – latitude
x_size – numpy array of x pixel sizes (m)
y_size – numpy array of y pixel sizes (m)
- Returns
lon_size (numpy array of x pixel sizes (degrees)), lat_size (numpy array of y pixel sizes (degrees))
from rsgislib import tools x_size, y_size = tools.metres_to_degrees(52, 1.0, 1.0)