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Hello Chris, </div>
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The data is in WGS84 UTM- zone 19S (EPSG: 32719),</div>
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and I got the geometries (perimeter and area) in meter units, </div>
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Thanks,</div>
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Carol.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> QGIS-User <qgis-user-bounces@lists.osgeo.org> on behalf of qgis-user-request@lists.osgeo.org <qgis-user-request@lists.osgeo.org><br>
<b>Sent:</b> December 29, 2024 9:48 PM<br>
<b>To:</b> qgis-user@lists.osgeo.org <qgis-user@lists.osgeo.org><br>
<b>Subject:</b> QGIS-User Digest, Vol 226, Issue 27</font>
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Today's Topics:<br>
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1. Re: Help with Buffer and Category-Specific Geometry Outputs<br>
in QGIS (chris hermansen)<br>
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----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Sun, 29 Dec 2024 21:48:31 -0800<br>
From: chris hermansen <clhermansen@gmail.com><br>
To: Carolina Lang <carolina.lang@ifop.cl><br>
Cc: qgis-user <qgis-user@lists.osgeo.org><br>
Subject: Re: [Qgis-user] Help with Buffer and Category-Specific<br>
Geometry Outputs in QGIS<br>
Message-ID:<br>
<CACc2_6-6QNyyyOhoovwd_=X1vZfMhZhbpjT-X+sd+K9iJZ=0Xw@mail.gmail.com><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Carolina and list,<br>
<br>
On Sun, Dec 29, 2024, 21:39 Carolina Lang via QGIS-User <<br>
qgis-user@lists.osgeo.org> wrote:<br>
<br>
> Hello everyone,<br>
> I'm using QGIS 3.34 and working with the vector-geometry-buffer function<br>
> on a shapefile containing multiple spatial points, categories (or location<br>
> type) are represented as a group of these spatial points. For each<br>
> category, my goal is to calculate the geometries (perimeter and area)<br>
> created by the buffers.<br>
> While the output result includes these geometries, it does not properly<br>
> associate them with their respective categories. Instead, for each row in<br>
> the output, I see the same category listed but with varying perimeters and<br>
> areas, making it difficult to distinguish which geometries belong to which<br>
> category.<br>
> Example<br>
> input file_(here I use column APA_radius as variable distances for buffer)<br>
> output file_9as you can see geometries for both categories but no idea<br>
> which geometries belong to which category)<br>
> Has anyone encountered this issue before? Is there a specific step or<br>
> method I might be missing to properly link the geometries to their<br>
> respective categories?<br>
><br>
<br>
What is your projection for your shape file?<br>
<br>
If it's not projected ie in lat-lon your buffer radius won't be interpreted<br>
as metres.<br>
<br>
Chris<br>
<br>
><br>
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