# Error while getting geographic coordinates of projected location

**URL:** <https://community.geodynamics.org/t/error-while-getting-geographic-coordinates-of-projected-location/1849>\
**Category:** PyLith\
**Created:** [May 18, 2021, 11:19am UTC](https://community.geodynamics.org/t/error-while-getting-geographic-coordinates-of-projected-location/1849 "2021-05-18T11:19:20Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![alvinakkuncoro](https://avatars.discourse-cdn.com/v4/letter/a/ba8739/32.png) [@alvinakkuncoro](https://community.geodynamics.org/u/alvinakkuncoro)\
**Post date:** [May 25, 2021, 8:37am UTC](https://community.geodynamics.org/t/error-while-getting-geographic-coordinates-of-projected-location/1849/10 "2021-05-25T08:37:24Z")

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Dear Charles and Brad,

I missunderstood this part " Looking at your files, it appears to me that your spatial database files are not in a geoprojected coordinate system, but are instead geographic coordinates (e.g., lon/lat/elevation)."  
So this is my coseismic spatialdatabase in utm projection :  
[fault\_slabtop\_coseismic\_utm47s.spatialdb.tar.gz](https://community.geodynamics.org/uploads/short-url/m6a7oNMujPxJM9Xc42jrRR7WnF8.gz) (5.5 KB)

I have tried to use the projected spatialdatabase above and I am still having the same issue for both interseismic and coseismic simulation (my creep spatialdatabase has no variation along x and y. Only z dependent. But I have the same issue).  
I try to recreate the geometry using merc projection and adjust all the spatialdatabase in merc projection and my interseismic simulation can pass the projection issue. Eventhough I receive new error :  
[0]PETSC ERROR: KSPSolve has not converged due to Nan or Inf norm  
[step03-parameters.json.tar.gz](https://community.geodynamics.org/uploads/short-url/bjdHnBM2ztPJSiyfIRt1R1Kr4Ar.gz) (13.9 KB)

So to create the mesh and convert the coordinate, I use qgis rather than proj. Because I am not familiar using proj and the slab contour script provided in the examples. I am using UTM projection zone 47S for the UTM projection.

Regards,  
Alvina K K

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