Displaying 20 results from an estimated 600 matches similar to: "Convert tileplot's trellis to shapefile/ Add values to voronoi polygon"
2006 Jul 19
2
voronoi tessellations
Okay, been working with tripack, seems the most mature package for this. Got it to work well with their test data set - data(tritest). When i tried random numbers to explore further, i am getting some results that don't reconcile.
example run this:
library(tripack)
y <- runif(100)
x <- runif(100)
vm <- voronoi.mosaic(x,y)
plot(vm)
par(new=T)
plot(x,y,col='blue')
when
2012 Dec 04
0
latticeExtra tileplot question - tiles are not all the same size, need help.
Hello,
I have been creating many tileplots to try and illustrate the relative
abundance of fish through space and time. My issue is that the tiles that
border the plot are smaller than those in the center of the plot. In the
example I've provided the effect is pretty minor (I'm hoping this will be an
adequate example as I had the code already created/data uploaded). However,
I have other
2001 Apr 14
0
How to create polygons from voronoi objects in tripack?
Hello.
I'd like to convert voronois object created by tripack to polygons to use
them in GIS(Geographic Information Systems) software. I tried to create
voronoi objects by using following code.
> library(tripack)
> x <- rnorm(10)
> y <- rnorm(10)
> plot(x,y)
> v<-voronoi.mosaic(x,y)
> plot(v)
But from here, I could not create polygons.
Of course, I know
2012 Aug 23
1
adding tick labels to tileplot()
Hi all -
I am far from fluent in R and need some help polishing up a figure I am
trying to create. I wish to make a "tileplot" (from package extraLattice)
where the x axis is time (months; may - sept) and the y axis is space
(fishery management zones). Here is my code so far:
tileplot(effort~month_num*-area_num,mae,col.regions=topo.colors(100),
border =
2007 May 09
1
voronoi.mosaic chokes?
Hi all,
I am running R 2.5.0 under Windows XP Media Center Edition. Here's a
problem that's been stumping me for a few days now, and I can't find
anything useful in the archives. I am using voronoi.mosaic (tripack
package) to create proximity polygons for a study of vegetation
competition and dynamics. The points lists are read in from a file for
each plot, then 8 duplicates
2008 Feb 07
1
Voronoi
Hello everyone
I have a problem with tripack package, I want to perform a Voronoi
tessellation on a specific domain (I have the shape file), in order to
weight my climatic data with the area ... How Can I do it?
Thank you very much
Andrea
2011 Feb 24
1
weighted Voronoi diagrams
Dear R-users,
Does anyone know how to do weighted Voronoi diagrams (Dirichlet
tesselation) in R? To be more specific, I have a set of coordinates for
tree locations on a plot, and I'm looking for a way to do the
tesselation so that the polygon size for each tree depends on the size
of the subject tree, and the size of its neighbors. So, the location of
the bisection between two trees
2004 Aug 31
0
N-dimensional delaunay tesselation & voronoi diagrams
Hi,
I've been looking for functions that can do delaunay tesselation and
generate voronoi cells. I came across deldir and tripack but both seem
to be restricted to 2D points. Are there any packages that can do a
tesselation in N dimensions? I know that Matlab and Mathematica use the
qhull package to provide functions for this. Does anybody know of any R
packages that do this (maybe by calling
2006 Apr 06
1
rounding of voronoi vertices using deldir()
Hello list,
I'm just getting started with using R - I have been trying over the past
day or so to work out a method for generating voronoi polygons for
PostGIS using SQL. I was able to put together a procedure which works
relatively well, but is somewhat inefficient. Someone on the PostGIS
list pointed me to the deldir() function in R, for which I can export a
text file with x/y coordinates
2013 Feb 04
1
is it possible to create a trellis object with multiple colorkeys/z-scale axis?
Dear R users-
Do the lattice/latticeExtra packages support multiple tileplots with unique
colorkeys? I am trying to create a visualization of the encounter rate of
certain stocks of salmon across two years. The issue I am having is that
some stocks are encountered at much higher rates than others.the high
encounter rate for one stock washes out the patterns I'm hoping to visualize
across the
2007 Nov 27
1
voronoi/Delaunay/Dirichlet tessellation on sphere in R or S?
There's Renka's STRIPACK, and TRIPACK, respectively, ACM TOMS Algorithms
772 and 751, and there's the R package "deldir" which does the Delaunay
for a plane, but does anyone have or know of the tessellation in R for a
sphere?
Also, is there a standard indexing scheme for Delaunay facets, and
perhaps of edges in such facets? I'd expect that to be a publication
reference,
2005 Nov 13
4
voronoi
Is there any pure r code to do delaunay or voronoi diagrams?
Thanks!
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2006 Oct 03
2
maybe use voronoi.findrejectsites?
hi all members,
please, i need you help... now a i´m working with veronoi polygons in a
area with projections, but i need cut the polygons left. On other words, i
need cut the polygons in the worked area.
R help say that use the command voronoi.findrejectsites, but in this
command i need put the numbers, any way...this command not cut!! do you
can help me?
Thank you for help me!
José Bustos
2000 Jun 07
2
"clipping error in x11()" (PR#564)
There seems to be an error in the X11 display code:
try:
plot(c(-30000,-1,0,1,30000),c(30000,1,0,1,30000),type="l")
points(c(-30000,-1,0,1,30000),c(30000,1,0,1,30000))
it gives a big "V" as expexted. Now zoom in using small xlim and ylim:
plot(c(-30000,-1,0,1,30000),c(30000,1,0,1,30000),type="l",
xlim=c(-5,5),ylim=c(0,5))
2014 Apr 14
2
[LLVMdev] LLVM 3.4.1 - Testing Phase
On 04/14/2014 02:31 PM, Arnaud Allard de Grandmaison wrote:
> Hi All,
>
> As kindly pointed by Sebastian, please forget my point about the release
> script. I read the mail from Tom 2 days ago, and forgot that the script was
> available in the tag / branch when I acted today :(
>
> I uploaded clang+llvm-3.4.1-rc1-x86_64-unknown-ubuntu12.04.tar.xz to
> ftp.llvm.org.
>
2006 Apr 18
0
scalassoc package
Many new things at
http://www.cuddyvalley.org/psychoR/
The scalassoc package, which fits exponential distance association
models
to indicator matrices, it now at version 1.0.0. It seems to be robust
and
can analyze large examples easily. It is a major improvement (in
speed and
robustness) over the distassoc package, which is at the same site.
scalassoc does something neat (if you like
2013 Jan 20
2
[LLVMdev] local test-suite failures on linux
There is almost certainly a bug in lnt or the makefiles.
I changed the body of Burg main to the following:
+ printf("Hello World\n");
+ return 0;
I re-ran the test-suite again and got the following errors:
--- Tested: 986 tests --
FAIL: MultiSource/Applications/Burg/burg.execution_time (494 of 986)
FAIL: MultiSource/Applications/ClamAV/clamscan.execution_time (495 of 986)
FAIL:
2019 Mar 19
2
Como generar el dibujo de un mapa, tipo los de maptools::data(wrld_simpl)
Buenas!
Estoy intentando hacer un trabajo con mapas y llegué a un punto en el que
me atasco:
Quiero generar el dibujo de un mapa.
A ese mapa después le señalaría unos puntos y en, base a esos puntos,
dividiría el mapa en secciones (usando diagramas Voronoi, que creo que
sabría hacerlo, por más que todavía me quedan raro)
Todavía lo que sé hacer es muy ínfimo (marcar puntos y etiquetar con
2013 Jan 22
0
[LLVMdev] local test-suite failures on linux
On Sun, Jan 20, 2013 at 1:26 PM, Redmond, Paul <paul.redmond at intel.com> wrote:
> There is almost certainly a bug in lnt or the makefiles.
>
> I changed the body of Burg main to the following:
>
> + printf("Hello World\n");
> + return 0;
>
>
> I re-ran the test-suite again and got the following errors:
>
> --- Tested: 986 tests --
> FAIL:
2019 Mar 19
2
Como generar el dibujo de un mapa, tipo los de maptools::data(wrld_simpl)
Muchas gracias, Carlos.
Estaba emperrado con usar OSM. Pero sevuramente los de Google presentaran
alguna solucion.
Intento probar pronto.
Juan Abasolo.
telefomotik, barjatu trebezi falta
Carlos Ortega <cof en qualityexcellence.es> igorleak hau idatzi zuen (2019
mar. 19, ar. 23:13):
> Hola,
>
> No sé si esto seguirá siendo vigente, con los cambios en las APIs de
> Google...