How to make background of geotiff transparent in geonode

[TheNumenorean]

I am trying to generate geotiffs from point data, and generally it is working fine. However, whenever i upload the result to Geonode, the background is rendered black:

How do i make the NaN portions transparent?

What im trying:

out_grd = make_geocube(
    vector_data=gdf, measurements=["elevation"], resolution=(-0.1, 0.1)
)["elevation"]
out_grd.rio.to_raster(output_path)

Sample data:

[RichardScottOZ]

Have to set the right nodata value.

[fjmacagno]

How do i figure out what that is? I have tried -9999 without luck, and my research hasn't brought up anything very useful.

[RichardScottOZ]

Look at the representation of the dataset unmasked - look at a histogram, view the dataset in some software and click on the area that you want to know...

…

On Mon Nov 18 2024 Francesco Macagno ***@***.***> wrote: ---------- Original Message ---------- How do i figure out what that is? I have tried -9999 without luck, and my research hasn't brought up anything very useful. — Reply to this email directly, view it on GitHub ( #831 (reply in thread) ) , or unsubscribe ( https://github.com/notifications/unsubscribe-auth/ARG2AI6HIWG2EPW6X7WSKWD2BDXQVAVCNFSM6AAAAABR5A7HNOVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMRYGUYDQOI ). You are receiving this because you commented. Message ID: <corteva/rioxarray/repo-discussions/831/comments/11285089 @ github. com>

[TheNumenorean]

Looking at my dataset itself was not helpful, it simply showed what i already knew, which was that outside of the tiff had no data at all, and the area where it was black had the value nan or -9999, depending on what i set the nodata value to. However, that did make me think to check the values of a tiff i got elsewhere and worked as expected: it had the value 0 for the transparent areas inside the bounding box. Using that for nodata worked.

I also found in geoserver that you can see the band info by looking at the layer details: