How to correct circles seen as ellipses in UTM projection

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Sergi Gàmiz Ribelles

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Jan 31, 2023, 6:11:33 AM1/31/23
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Hi. When Working on Lon/Lat coordsys perfect circles are seen as they are, but when working on UTM perfect circles are seen as vertically elongated ellipses. Is this an issue from mapInfo or Windows? Does anybody knoe how to correct this?
Thank you.
SGR

Peter Horsbøll Møller

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Jan 31, 2023, 7:21:12 AM1/31/23
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Hi Sergi

 

Everything gets distorted by projections or lat/long.

 

If you create a perfect circle in a projected coordinated system and display it in this coordinate system, it will look fine.

If you create a perfect circle in lat/long and display it in lat/long it will look fine.

 

When you start mixing the two, things look distorted.

 

You may be able to improve this slight by converting your circle to a region that has more nodes.

 

Peter

 

Peter Horsbøll Møller
Principal Sales Engineer - Distinguished Engineer

 

From: mapi...@googlegroups.com <mapi...@googlegroups.com> On Behalf Of Sergi Gàmiz Ribelles
Sent: Tuesday, 31 January 2023 12.12
To: MapInfo-L <mapi...@googlegroups.com>
Subject: [MI-L] How to correct circles seen as ellipses in UTM projection

 

This message originated Externally. Use proper judgement and caution with attachments, links, or responses.

 

Hi. When Working on Lon/Lat coordsys perfect circles are seen as they are, but when working on UTM perfect circles are seen as vertically elongated ellipses. Is this an issue from mapInfo or Windows? Does anybody knoe how to correct this?

Thank you.

SGR

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Sergi Gàmiz Ribelles

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Feb 1, 2023, 6:07:00 AM2/1/23
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Thank you, Peter

El dia dimarts, 31 de gener de 2023 a les 13:21:12 UTC+1, Peter Horsbøll Møller va escriure:
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