NAME
v.ellipse - Computes the best-fitting ellipse for given vector data.
KEYWORDS
vector,
geometry,
best-fitting ellipse
SYNOPSIS
v.ellipse
v.ellipse --help
v.ellipse input=name output=name [step=float] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- --overwrite
- Allow output files to overwrite existing files
- --help
- Print usage summary
- --verbose
- Verbose module output
- --quiet
- Quiet module output
- --ui
- Force launching GUI dialog
Parameters:
- input=name [required]
- Name of input vector map
- Or data source for direct OGR access
- output=name [required]
- Name for output vector map
- step=float
- Step size in degrees
- Default: 4
v.ellipse computes the best-fitting ellipse for
input
vector map and creates new
output vector map with
ellipse. Input vector data might be 2D points, lines, or areas.
Fig: Fitting ellipse created with v.ellipse
The parameters of ellipse are printed on output if
--verbose
flag is given.
Example of
v.ellipse created around set of points (using data
points_of_interest, North Carolina sample data set). Ellipse is
is approximated by linestring with point distance 1 degree
(
step).
v.ellipse input=points_of_interest output=ellipse step=1
v.hull
Tereza Fiedlerova, OSGeoREL, Czech Technical University in Prague, Czech Republic
SOURCE CODE
Available at:
v.ellipse source code
(history)
Latest change: Monday Jan 30 19:49:11 2023 in commit: 5fb6b1a969e72db28df78483d3360b15a17f0c68
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GRASS Development Team,
GRASS GIS 8.3.dev Reference Manual