Support netcdf file

[zxdawn]

Description

As geemap has supported the netcdf file (gee-community/geemap#285), it's better to add it to leafmap like https://github.com/davidbrochart/xarray_leaflet/issues/12.

Source code

Anyway, I use xarray_leaflet temporarily:

import leafmap
import xarray as xr
import xarray_leaflet

m = leafmap.Map(center=(40, -100), zoom=4)

data = xr.open_dataset('../data/tropomi_regrid/monthly/S5P_OFFL_L2__NO2____qa50_qa75_csd_202001-202108.nc')['tropospheric_NO2_column_number_density'].isel(time=0)

l = data.leaflet.plot(m, x_dim='longitude', y_dim='latitude', colormap='vidiris')

m.add_tile_layer(l, name="TROPOMI NO2", attribution="Test")

Error:

Exception: The 'url' trait of a TileLayer instance expected a unicode string, not the LocalTileLayer LocalTileLayer(name='tropospheric_NO2_column_number_density', options=['attribution', 'detect_retina', 'max_native_zoom', 'max_zoom', 'min_native_zoom', 'min_zoom', 'no_wrap', 'tile_size', 'tms']).

Is it possible to add the LocalTileLayer to map?

[giswqs]

Use m.add_layer() rather than m.add_tile_layer() to add LocalTileLayer. See https://ipyleaflet.readthedocs.io/en/latest/api_reference/local_tile_layer.html

Adding netCDF support is on my to-do-list. I don't have a timeline to implement it yet. Contributions are welcome.

[giswqs]

@zxdawn Leafmap now supports NetCDF data. See notebook example https://leafmap.org/notebooks/52_netcdf/

[zxdawn]

@giswqs Thanks a lot for your hard work!