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Code covered by the BSD License

5.0

5.0 | 2 ratings Rate this file 6 Downloads (last 30 days) File Size: 4.44 KB File ID: #11095

bufferm2

16 May 2006 (Updated 30 Sep 2010)

Creates a buffer zone around or inside a polygon or polygons

File Information
Description	This function was originally designed as a replacement for the Mapping Toolbox function bufferm, which calculates a buffer zone around a polygon. The original bufferm function had some serious bugs that could result in incorrect buffer results and/or errors, and was also very slow. As of R2006b, those bugs have been fixed in bufferm.m. However, this version still maintains a few advantages over the original: - Can be applied to polygons in either geographical space (as in bufferm) or in cartesian coordinates. - Better treatment of polygon holes. The original function simply filled in all holes; this version trims or pads holes according to the buffer width given. Input and output format is identical to bufferm unless the 'xy' cartesian-coordinate option is specified, so it can be used interchangeably.
Required Products	Mapping Toolbox
MATLAB release	MATLAB 7.4 (R2007a)

Tags for This File
Everyone's Tags	buffer, buffer zone(2), bufferm, polygon(2)
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Comments and Ratings (3)
03 Feb 2010	Pavan	Works flawlessly. Thanks for modifying the code to read Cartesian co-ordinates.
02 Feb 2012	Jaroslaw	Doesn't work with GK-coordinates (Cartesian). My output polygon is the same as input.
04 Feb 2012	Jaroslaw	After some modifications works perfect with GK4 :)

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Updates
24 May 2006	Added link and comments to this web page regarding the updated version of bufferm.
20 Jan 2010	Added ability to work in cartesian coordinates rather than geographic space; updated description and example on webpage.
30 Sep 2010	Fixed a bug in input checks so input can be either row or column vectors. Also updates internal plot checks to plot in cartesian coordinates so can be used to check both geographic and x-y input.