ImageOverlay or TileLayer with local files

I was trying the Velocity demo with a smaller wind dataset and would like to add a local file rasters (higher quality terrain hillshade) or a local Tilemap I created with QGIS to the map. Those files are on a different drive though, and I can´t figure out how to get them to display. It seems absolute paths don´t work even if I try it with the same file I use for the relative path:

# png is in the same folder as the notebook
# works
rel_url = './IPy_header.png'
io1 = ImageOverlay(url=rel_url, bounds=m.bounds)
m.add_layer(io1)

# does not work
abs_url = 'file:///E:/JUPYTER/Velocity/IPy_header.png'
io2 = ImageOverlay(url=abs_url, bounds=m.bounds)

m.add_layer(io2)

How can I point to a local file or a Tilemap and get it to display?

[banesullivan]

Thought I’d chime in and give a plug for something I developed to solve the issue of viewing local raster files with ipyleaflet: https://github.com/banesullivan/localtileserver

In essence, it’s a little package that will launch a local tile server in a background thread for use with ipyleaflet. Check out the README for an example, (the code here is subject to change):

from localtileserver import get_leaflet_tile_layer
from ipyleaflet import Map, ScaleControl, FullScreenControl, SplitMapControl

m = Map(
        center=(37.7249511580583, -122.27230466902257),
        zoom=9, crs=projections.EPSG3857,
       )

# Create two tile layers from 2 seperate raster files
l = get_leaflet_tile_layer('~/Desktop/TC_NG_SFBay_US_Geo.tif',
                           band=1, palette='matplotlib.Viridis_20', vmin=50, vmax=200)
r = get_leaflet_tile_layer('~/Desktop/small.tif',
                           band=2, palette='matplotlib.Plasma_6', vmin=0, vmax=150)

control = SplitMapControl(left_layer=l, right_layer=r)
m.add_control(control)

m.add_control(ScaleControl(position='bottomleft'))
m.add_control(FullScreenControl())
m

[martinRenou]

The discussion is drifting away from the original purpose of the issue.

Would you mind opening another issue or ask your question on another channel?