[SOLVED] Sandworm issue when changing output projection system

[Lales.Charles]

Hi,

I do have an issue using sandworm to generate a terrain south of Germany with attached file.

In sandworm UI, if I change coordinate system as EPSG:25832 there is no consistent preview, I need to keep EPSG:3857.

Also in generation settings, if I set
- Projection > EPSG:25832 -> inconsistent result, only black flat material, no texture
- Projection > EPSG:3857-> already better, elevation and texture are there.

Do you reproduce?
Would you see why?
Something I am doing wrong?

Regards,

800_5284.tif

32800_5284.tif

[bmyagkov]

Hello @Lales.Charles

It seems that the data used is not aligned with the selected projection. Please refer to the attached image, where the purple cross marks the actual location. Choosing a more suitable projection for this data may resolve the issue. You can use https://epsg.org/ to find the best-fitting projection with minimal inaccuracy for the selected area. For this specific data you might consider using EPSG:25833 as this projection worked as expected during the generation process.

Thanks!

[Lales.Charles]

Hi,

Thanks for the indications!

Yes EPSG:25833 seems to do the job, but from source data pages mention EPSG:25832:
https://geodaten.bayern.de/opengeodata/OpenDataDetail.html?pn=dop20rgb
https://geodaten.bayern.de/opengeodata/OpenDataDetail.html?pn=dgm1

Do you think there is an issue from the data provider?

Regards,
Charles

[bmyagkov]

Hello!

15 hours ago, Lales.Charles said:

Do you think there is an issue from the data provider?

There may be other factors to consider and reaching out to the data provider could provide additional clarity on this behavior. However, for now, even third-party software like QGIS confirms that the data is outside its projection boundaries, just as it appears in the Unigine Editor. However, both QGIS and the Unigine Editor rely heavily on the GLAD plugin which could explain why they behave the same way :)

Thanks!