4.2 | 5 ratings Rate this file 11 downloads (last 30 days) File Size: 2.15 KB File ID: #7187

inpolygons

18 Mar 2005 (Updated 21 Mar 2005)

Code covered by the BSD License

Finds points inside multiple polygons, holes possible.

File Information
Description	This function is similar to MATLAB's inpolygon function, but allows the polygon vertices to describe multiple polygons, and allows these polygons to have holes in them. In the case of multiple polygons, it also returns the index of the polygon in which a point was found.
Required Products	Mapping Toolbox
MATLAB release	MATLAB 7.0.1 (R14SP1)

Tags for This File
Everyone's Tags	approximation, approximations, interpolation, mathematics, polygon, polygons
Tags I've Applied
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Comments and Ratings (6)
15 Apr 2005	peng wenmin
12 Jan 2006	Eleonora Vidolova
18 Jan 2006	Gennady Khokhorin	Thanks, nice work!
01 Mar 2007	Matt K.	Works perfectly and very quickly! The Mapping Toolbox saves me again!
22 May 2007	Ben G	Got an error just running the example. ??? Error using ==> vertcat All rows in the bracketed expression must have the same number of columns. Error in ==> polysplit at 35 if ~isnan( lat(length(lat)) ); lat = [lat; NaN]; end Error in ==> inpolygons at 59 [xsplit, ysplit] = polysplit(xv, yv);
23 May 2007	Kelly Kearney	Ben, What version of Matlab are you running? The example runs fine on my computer, R2007b (Mapping Toolbox 2.4). But the line numbers you list don't agree with either of my copies of the code (the inpolygons line you note as 59 is line 69 in the code offered here, and the line you note in polysplit doesn't appear at all in my version of polysplit.m).

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Tag Activity for this File
Tag	Applied By	Date/Time
approximation	Kelly Kearney	22 Oct 2008 07:43:37
interpolation	Kelly Kearney	22 Oct 2008 07:43:37
polygon	Kelly Kearney	22 Oct 2008 07:43:37
polygons	Kelly Kearney	22 Oct 2008 07:43:37
mathematics	Kelly Kearney	22 Oct 2008 07:43:37
approximations	Kelly Kearney	22 Oct 2008 07:43:37

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