Displaying 4 results from an estimated 4 matches for "convexhull".
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btconvexhull
2012 Jul 04
2
problem loading siar
Hi,
I have a problem while loading the "siar" program in R.
When I am loading siar, system does not load convexhull. On the screen I
have seen such writings.
The following object(s) are masked from ‘package:spatstat’:
convexhull
How can I load the convexhull, how can I unmask from this package? I will
be appreciated if you give advice about this.
Best
Sukran
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2007 Mar 26
2
sampling from the uniform distribution over a convex hull
...s anyone have a suggestion (or better still) code for sampling
> from the uniform distribution over the convex hull of a set of
> points?
This is implemented in library 'spatstat'.
If x and y are vectors of coordinates of your initial set of points,
library(spatstat)
W <- convexhull.xy(x, y)
P <- runifpoint(42, W)
will compute the convex hull and generate 42 independent
uniformly-distributed points in the convex hull.
The result can be plotted by
plot(P)
and the coordinates of the simulated points can be extracted
as P$x and P$y.
Adrian Baddeley
2007 Sep 07
1
Finding convex hull?
Dear UseRs,
I would like to know which function is the most efficient in finding
convex hull of points in 3(or 2)-dimensional case?
Functions for finding convex hull is the following:
convex.hull (tripack), chull (grDevices), in.chull (sgeostat),
convhulln (geometry), convexhull.xy (spatstat), calcConvexHull
(PBSmapping).
I also would like to know if there is a function that can be used for
finding convex hull in multi-dimensional case, that is more than 3-
dimension.
Thank you in advance.
2012 Jul 03
1
problem in lodging package
Dear,
I would like to use the siar program, when I lodging package the message
appear, so I couldn't use the related calculations.
The following object(s) are masked from ‘package:spatstat’:convexhull
Could you please write me what shoud I do?
Sukran Yalcin Ozdilek
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