Hi,
One solution, assuming you don't need to run any analysis and its purely for viewing on a map is to use a vector points dataset, using the points as the centres for the circles and styled using an attribute to define the Circles radius.
To change the radius, you can place the dataset in edit mode and using the Identify Features tool change the circle radius.
You can also, if required buffer the point files using the radius attribute and the Variable width Buffer tool I hope this helps.
Kind Regards,
Richard
> >
-----Original Message-----
> > From: QGIS-User <qgis-user-boun...@lists.osgeo.org> On Behalf Of
> > Springfield Harrison via QGIS-User
> > Sent: 16 January 2025 07:35
> > To: qgis-user@lists.osgeo.org
> > Subject: [Qgis-user] Circles w/ Variable Radii
> >
> > Hello,
> >
> > My requirement is to draw a few circles on the map but with radii that
> > I can vary quickly. The circles need to be changed frequently for
> > comparative purposes.
> >
> > The radius could be obtained from a value in the attribute table or,
> > better still, from an on-screen dialog box.
> >
> > Would this be possible? Thanks very much.
> >
> > --------
> > Cheers, Springfield Harrison
> >
> > _______________________________________________
> > QGIS-User mailing list
> > QGIS-User@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
One solution, assuming you don't need to run any analysis and its purely for viewing on a map is to use a vector points dataset, using the points as the centres for the circles and styled using an attribute to define the Circles radius.
To change the radius, you can place the dataset in edit mode and using the Identify Features tool change the circle radius.
You can also, if required buffer the point files using the radius attribute and the Variable width Buffer tool I hope this helps.
Kind Regards,
Richard
> >
—— Richard McDonnell MSc GIS, FME Certified Professional Flood Risk Management - Data Management —— Oifig na nOibreacha Poiblí Office of Public Works Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 Jonathan Swift Street, Trim, Co Meath, C15 NX36 —— M +353 87 688 5964 T +353 46 942 2409 https://gov.ie/opw —— To send me files larger than 30MB, please use the link below https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie Email Disclaimer: https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/ |
> > From: QGIS-User <qgis-user-boun...@lists.osgeo.org> On Behalf Of
> > Springfield Harrison via QGIS-User
> > Sent: 16 January 2025 07:35
> > To: qgis-user@lists.osgeo.org
> > Subject: [Qgis-user] Circles w/ Variable Radii
> >
> > Hello,
> >
> > My requirement is to draw a few circles on the map but with radii that
> > I can vary quickly. The circles need to be changed frequently for
> > comparative purposes.
> >
> > The radius could be obtained from a value in the attribute table or,
> > better still, from an on-screen dialog box.
> >
> > Would this be possible? Thanks very much.
> >
> > --------
> > Cheers, Springfield Harrison
> >
> > _______________________________________________
> > QGIS-User mailing list
> > QGIS-User@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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