I want to sort alphabetically all CRSs in the Recently Used Coordinate Reference Systems list in QGIS. But I can't find a way to do this using the user interface.
How one can sort them using PyQGIS?
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1 Answer
Sorting Recently Used Coordinate Reference Systems list cloud be done using the QgsCoordinateReferenceSystemRegistry class.
Here is a code that automatically sorts it alphabetically using CRS name when a new CRS is pushed to the top of the list.
Place this code in a startup.py file can be found under C:\Users\%USERNAME%\AppData\Roaming\QGIS\QGIS3\startup.py (for Windows 10 users):
def sort_recent_crs():
recent_crs_list = qgis.core.QgsApplication.coordinateReferenceSystemRegistry().recentCrs()
recent_crs_dict_disordered = {crs.description(): crs for crs in recent_crs_list}
sorted_dict = {key: recent_crs_dict_disordered[key] for key in sorted(recent_crs_dict_disordered)}
sorted_values = [value for value in sorted_dict.values()]
qgis.core.QgsApplication.coordinateReferenceSystemRegistry().recentCrsPushed.disconnect(sort_recent_crs)
for crs in sorted_values[::-1]:
qgis.core.QgsApplication.coordinateReferenceSystemRegistry().pushRecent(crs)
qgis.core.QgsApplication.coordinateReferenceSystemRegistry().recentCrsPushed.connect(sort_recent_crs)
qgis.core.QgsApplication.coordinateReferenceSystemRegistry().recentCrsPushed.connect(sort_recent_crs)
