Error creating Transformer from CRS.

[tnmthai]

I only run the code from the link: https://samgeo.gishub.org/examples/satellite/ and this code cell did not work:

style = {
    "color": "#3388ff",
    "weight": 2,
    "fillColor": "#7c4185",
    "fillOpacity": 0.5,
}
m.add_vector(vector, layer_name="LAL") #, style=style)
m

Do you know why it happened? Thanks.

The above code raised the errors below:

ProjError                                 Traceback (most recent call last)
Cell In[18], line 7
      1 style = {
      2     "color": "#3388ff",
      3     "weight": 2,
      4     "fillColor": "#7c4185",
      5     "fillOpacity": 0.5,
      6 }
----> 7 m.add_vector(vector, layer_name="LAL") #, style=style)
      8 m

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/leafmap/leafmap.py:2622](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/leafmap/leafmap.py:2622), in Map.add_vector(self, filename, layer_name, bbox, mask, rows, style, hover_style, style_callback, fill_colors, info_mode, encoding, **kwargs)
   2611     self.add_geojson(
   2612         filename,
   2613         layer_name,
   (...)
   2619         encoding,
   2620     )
   2621 else:
-> 2622     geojson = vector_to_geojson(
   2623         filename,
   2624         bbox=bbox,
   2625         mask=mask,
   2626         rows=rows,
   2627         epsg="4326",
   2628         **kwargs,
   2629     )
   2631     self.add_geojson(
   2632         geojson,
   2633         layer_name,
   (...)
   2639         encoding,
   2640     )

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/leafmap/common.py:1555](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/leafmap/common.py:1555), in vector_to_geojson(filename, out_geojson, bbox, mask, rows, epsg, encoding, **kwargs)
   1551 else:
   1552     df = gpd.read_file(
   1553         filename, bbox=bbox, mask=mask, rows=rows, encoding=encoding, **kwargs
   1554     )
-> 1555 gdf = df.to_crs(epsg=epsg)
   1557 if out_geojson is not None:
   1558     if not out_geojson.lower().endswith(".geojson"):

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/geodataframe.py:1364](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/geodataframe.py:1364), in GeoDataFrame.to_crs(self, crs, epsg, inplace)
   1362 else:
   1363     df = self.copy()
-> 1364 geom = df.geometry.to_crs(crs=crs, epsg=epsg)
   1365 df.geometry = geom
   1366 if not inplace:

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/geoseries.py:1124](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/geoseries.py:1124), in GeoSeries.to_crs(self, crs, epsg)
   1047 def to_crs(self, crs=None, epsg=None):
   1048     """Returns a ``GeoSeries`` with all geometries transformed to a new
   1049     coordinate reference system.
   1050 
   (...)
   1121 
   1122     """
   1123     return GeoSeries(
-> 1124         self.values.to_crs(crs=crs, epsg=epsg), index=self.index, name=self.name
   1125     )

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/array.py:777](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/geopandas/array.py:777), in GeometryArray.to_crs(self, crs, epsg)
    774 if self.crs.is_exact_same(crs):
    775     return self
--> 777 transformer = Transformer.from_crs(self.crs, crs, always_xy=True)
    779 new_data = vectorized.transform(self.data, transformer.transform)
    780 return GeometryArray(new_data, crs=crs)

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/pyproj/transformer.py:573](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/pyproj/transformer.py:573), in Transformer.from_crs(crs_from, crs_to, skip_equivalent, always_xy, area_of_interest, authority, accuracy, allow_ballpark)
    566 if skip_equivalent:
    567     warnings.warn(
    568         "skip_equivalent is deprecated.",
    569         DeprecationWarning,
    570         stacklevel=2,
    571     )
--> 573 return Transformer(
    574     TransformerFromCRS(
    575         cstrencode(CRS.from_user_input(crs_from).srs),
    576         cstrencode(CRS.from_user_input(crs_to).srs),
    577         always_xy=always_xy,
    578         area_of_interest=area_of_interest,
    579         authority=authority,
    580         accuracy=accuracy if accuracy is None else str(accuracy),
    581         allow_ballpark=allow_ballpark,
    582     )
    583 )

File [~/miniconda3/envs/geemap/lib/python3.10/site-packages/pyproj/transformer.py:310](https://vscode-remote+wsl-002bubuntudev.vscode-resource.vscode-cdn.net/mnt/d/Scripts/sam/code/~/miniconda3/envs/geemap/lib/python3.10/site-packages/pyproj/transformer.py:310), in Transformer.__init__(self, transformer_maker)
    304     raise ProjError(
    305         "Transformer must be initialized using: "
    306         "'from_crs', 'from_pipeline', or 'from_proj'."
    307     )
    309 self._local = TransformerLocal()
...
    105     )

File pyproj/_transformer.pyx:1001, in pyproj._transformer._Transformer.from_crs()

ProjError: Error creating Transformer from CRS.

[giswqs]

This should have been fixed in https://github.com/opengeos/segment-geospatial/pull/43. Please try out the updated notebook https://github.com/opengeos/segment-geospatial/pull/43

[tnmthai]

Thanks Prof Qiusheng Wu.