COG notebook exporting geotif from qgis

[Niko-La]

1)is there a special way to export geotiff from qgis?
2)possible to host geotif fille on github and dsiplay?

[giswqs]

You need to covert the image to COG. See banesullivan/localtileserver#27

Once you have the COG, you can host it on GitHub and use leafmap to load COG onto the map.

m = leafmap.Map()
url = "https://github.com/giswqs/data/raw/main/raster/cog.tif"
m.add_cog_layer(url, name="COG", bands=[4, 1, 2])
m

[giswqs]

See https://leafmap.org/notebooks/42_create_cog

[Niko-La]

Thansk notebook demo works great on your geotiff file. If there is a format error when validating, is there a specific way to export grom qgis to have the right version?

`---------------------------------------------------------------------------
CPLE_OpenFailedError Traceback (most recent call last)
rasterio/_base.pyx in rasterio._base.DatasetBase.init()

rasterio/_shim.pyx in rasterio._shim.open_dataset()

rasterio/_err.pyx in rasterio._err.exc_wrap_pointer()

CPLE_OpenFailedError: '/vsicurl/https://github.com/Niko-La/jupyter_equity_2020/blob/main/brampton_geo.tif' not recognized as a supported file format.

During handling of the above exception, another exception occurred:

RasterioIOError Traceback (most recent call last)
in ()
1 #!pip install rio-cogeo
----> 2 leafmap.cog_validate(url2)

3 frames
/usr/local/lib/python3.7/dist-packages/rasterio/init.py in open(fp, mode, driver, width, height, count, crs, transform, dtype, nodata, sharing, **kwargs)
218 # None.
219 if mode == 'r':
--> 220 s = DatasetReader(path, driver=driver, sharing=sharing, **kwargs)
221 elif mode == "r+":
222 s = get_writer_for_path(path, driver=driver)(

rasterio/_base.pyx in rasterio._base.DatasetBase.init()

RasterioIOError: '/vsicurl/https://github.com/Niko-La/jupyter_equity_2020/blob/main/brampton_geo.tif' not recognized as a supported file format.`

[giswqs]

The URL should be https://github.com/Niko-La/jupyter_equity_2020/raw/main/brampton_geo.tif.