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Reprojector


n.d
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Hi. I aim to reproject the coordinate system EPSG:25832 to a metric coordinate system. Which destination system do you recommend?

8 replies

david_r
Evangelist
  • July 7, 2023

Depends on your use case, but if you simply want to use it for measuring relative distances or areas in meters, you can try using _AZMEA_NEIGHBORHOOD_

 

image


n.d
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  • July 7, 2023
david_r wrote:

Depends on your use case, but if you simply want to use it for measuring relative distances or areas in meters, you can try using _AZMEA_NEIGHBORHOOD_

 

image

Thank you


n.d
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  • July 27, 2023
david_r wrote:

Depends on your use case, but if you simply want to use it for measuring relative distances or areas in meters, you can try using _AZMEA_NEIGHBORHOOD_

 

image

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?


redgeographics
Celebrity
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n.d wrote:

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?

What coordinate system was used to create the circles and what coordinate system are you viewing them in? Shape distortion is a common side-effect of changing coordinate systems / map projections and, depending on the projections used, unavoidable.


n.d
Contributor
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  • July 27, 2023
n.d wrote:

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?

The circles are created in _AZMEA_NEIGHBORHOOD_ (as of david_r's recommendation above) coordinate system. And I reprojected them into EPSG:25832.


redgeographics
Celebrity
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n.d wrote:

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?

Okay, the AZMEA indicates it's Equal Area, so no distortion of area but yes distortion of shapes. If you transform it to another system then that's what you're going to get.

 

Create your circles in EPSG:25832, it's a transversal Mercator projection so, no distortion of shapes.


n.d
Contributor
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  • Author
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  • July 27, 2023
n.d wrote:

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?

Actually, I had some points (in a CityGML file) in the EPSG:25832 coordinate system at first. The radiuses for creating the circles were in meters. So that I reprojected the coordinate system to the AZEMA. After creating the circles in that system, I want to set back the coordination system to the original one and export them into an IFC file.

The exported IFC file is showing distortion in the drawings. How I should manage it?


redgeographics
Celebrity
Forum|alt.badge.img+49
n.d wrote:

Hello. I have drawed some geometries, and want to set back the coordination system. When I do that, the exported Geometries (in an IFC file) are not looking correctly, for example the circles are like some irregular polygons. What would you recommend to solve that?

EPSG:25832 is already in meters as far as I can tell: https://epsg.io/25832

 

So no need to do reprojection at all.

 


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