[Qgis-user] Square Buffer

[Michael Jabot]

Hugh

THANK YOU so much!!  You were correct about the distortion. When I checked
the length of sides with the measure tool (which I didn't do before) it was
a square

I also switched the coordinate system which also helped

THANK YOU again!!

Mike

*************************************
Michael Jabot, Ph.D.
SUNY Distinguished Professor, Science Education
US Partner - *NASA GLOBE Program*

*NASA Earth Ambassador*Director, *Institute for Research in Science
Teaching*

*Chancellor's Award Recipient for Excellence in Research*The State
University of New York at Fredonia



716.320-0189 (Google Voice)
jabot at fredonia.edu
E250 Thompson Hall
280 Central Avenue
Fredonia, NY  14063
*************************************






On Sat, Sep 30, 2023 at 2:58 PM Hugh Kelley <hghklly at gmail.com> wrote:

> Oops, including the list.
>
> Also, having now written the response and re-read your question, I would
> guess that the coordinate system you are using is causing the distortion
> you see in the result.
>
> I'd be curious to see what others on the list might suggest as the best
> option for crs as I think even state plane would be distorted at least a
> little.
>
> ---‐--------------------------------------
>
> Hi, not in front of my computer so I can't test but I would recommend
> first, creating a round buffer with a diameter equal to the square side you
> are looking for, and then second, using the "extent" tool that's in one of
> the vector tools subcategories to extract the layer extent, creating the
> square you need.
>
> That should create a "square" although, importantly, the idea of a square
> in the gis world is a little fraught as the coordinate system you are using
> can sometimes produce odd results.
>
> I would, at a minimum, use the measure tool to double check that what
> looks like a square truly has a height equal to its width.
>
> On Sat, Sep 30, 2023, 2:39 PM Michael Jabot via QGIS-User <
> qgis-user at lists.osgeo.org> wrote:
>
>> I apologize for posting what I think should be a simple task but I am
>> stumped.
>>
>> I would like to create a 15 km square Buffer around a point for
>> establishing a study site.
>>
>> I have used the buffer tool and set it to square and used 7.5 km as the
>> distance. The buffer that is created is not square but instead is a longer
>> on one set of sides.
>>
>> Again I apologize for bothering people with this ... thank you in advance
>> for your help
>>
>> Mike
>>
>>
>> *************************************
>>
>> Michael Jabot, Ph.D.
>> SUNY Distinguished Professor, Science Education
>>
>> US Partner - NASA GLOBE Program
>>
>> NASA Earth Ambassador
>> Director, Institute for Research in Science Teaching
>>
>> Chancellor's Award Recipient for Excellence in Research
>> The State University of New York at Fredonia
>>
>>
>> 716.320-0189 (Google Voice)
>>
>> jabot at fredonia.edu
>>
>> E250 Thompson Hall
>> 280 Central Avenue
>>
>> Fredonia, NY  14063
>> *************************************
>>
>>
>> _______________________________________________
>> QGIS-User mailing list
>> QGIS-User at lists.osgeo.org
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>
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