05-raster-data: error loading COG in OpenLayers example

[justb4]

• using the latest Docker Image Docker hub and latest master version as on this issue's date
• execute the Cells in 05 raster data
• file output_4326_cog.tif is generated
• btw gdal.Warp('../data/output_4326_cog.tif','../data/world.rgb.tif',dstSRS='EPSG:4326',format='COG') should better create the COG file in the ../data/output/ dir to prevent pushing generated files to GH.
• only the background OSM map shows up
• error in browser, see image

(My general remark is also that this example is IMO too advanced for an intro into GDAL raster. Participants may not have any idea about COG HTTP Range requests, TIF in OpenLayers... etc. Better to move to an Advanced section. I would recommend sticking to GDAL basics. )

[pvgenuchten]

It worked for me when running notebook locally, let me check on the docker version

True, the case may be a bit elaborate for basic python users, on the other hand they probably have heard about cog and may be interested to understand where it fits in the data flows. And looking at a map is always nice…

The previous solution used a Titiler server, with quite some dependencies, for that any tiff is fine, not just cog

[pvgenuchten]

i was starting the notebook from the wrong folder, then the path to the tiff does not resolve

updated in PR #247