Questions tagged [circle]
A circle is a simple shape of Euclidean geometry that is the set of all points in a plane that are a given distance from a given point, the centre.
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Creating point feature buffer as circle rather than as polygon in QGIS
We routinely create Tree Protection Zone and Structural Root Zones from tree location point data that has the circle radius values in QGIS. However, QGIS, using the buffer tool, creates multi point ...
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Line shapefile will only draw circles in QGIS
I create a new shapefile layer and select 'LineString' as my geometry type. When I go to actually draw it with the 'add line feature' tool, it will only draw a circle. I have tried different CRS and ...
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Why does a circular geometry from PostGIS display differently from its highlight in QGIS (projected CRS)?
Situation
I’m working with a variety of curved geometries (e.g. CURVEPOLYGON(CIRCULARSTRING(...))) stored in a PostGIS database using WGS84 (EPSG:4326).
In QGIS, I display these geometries in the ...
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How to create a best fit circle through polygon using QGIS
I have an approximately round, but still irregular polygon. I would like to use QGIS to approximate this polygon with a circle using the least squares method. I have currently only found the ...
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Finding point equidistant from three non-collinear points in QGIS
How do I find the point* equidistant from 3 non-collinear points in QGIS?
*There is one unique point, the center of the unique circle that can always be drawn through 3 non-colinear points: Hadamard, ...
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Fill polygon with circles
Essentially, I need these polygons to be circle packed with a varying degree of circles, using the red ones as an example.
The green polygons are represented as a canopy layer for a topology report. ...
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Plotting circle by center of circle and the radius in QGIS
I want to draw the circle by the center of the circle and the radius of the specified circle, just like in ArcGIS, to show the distance of the edge from the center of the circle and thus draw the ...
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Where to place the poles on a map of the Earth, where polar circles are not straight lines?
Consider this question, that was part of an evaluation that my daughter had in school:
The underlined question translates to "draw a green dot at the north pole and the south pole".
I think ...
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Can GeoTools parse GML geodetic shapes?
I am trying to parse different GML definitions, according to the geodetic shapes defined in RFC-5491. Points and polygons are parsed OK with GeoTools parser:
Configuration configuration = new ...
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Finding the Minimum Bounding Circle [closed]
I am trying to find the Minimum Bounding Circle for a given state in the US.
To do so I am using GeoPandas minimum_bounding_circle function
The result returns a Polygon, however, I would like to find ...
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Map location of unknown point coordinates with two known coordinates and distances between them [duplicate]
I have a problem where I need to find the coordinates of a point which is the intersecting point of two circles. I found a similar question on stackoverflow.
I understood to some extent, but not able ...
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Cutting circle into polygon in OpenLayers?
I have a square polygon and I want to cut circles into it where I click with the mouse. The result should be a new polygon with holes in it.
This is my attempt so far but I can't get it to work.
The ...
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Limiting Voronoi polygons with circles
Using the following:
Layer 1: Voronoi polygons
Layer 2: Circles buffer for each points, polygons
When I Cut/Intersect in QGIS, here is what I can get as results.
This is ALMOST what I want.
The ...
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Creating a 500m circle centred on a coordinate in OpenLayers
All I want to do is create a 500m circle around One Tree Hill in Auckland New Zealand, but nothing works for me. The codes I've tried seem to run, I've specified huge radii to check to see if the ...
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QGIS Buffer tool and Shape Tools circle size does not match
I am trying to create a circle polygon around a point so that I can count population from a raster grid inside that circle. I know this has been well-covered in other posts, and I've managed to do it, ...
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