Displaying 20 results from an estimated 3000 matches similar to: "contour labelling [was "Re: image ()"]"
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,
1998 Dec 03
2
contour labelling [was "Re: image ()"]
> From: Martin Maechler <maechler at stat.math.ethz.ch>
> To: royle at bearmtn-e0.cgd.ucar.edu
> CC: lgygax at access.unizh.ch, r-help at stat.math.ethz.ch
> Subject: contour labelling [was "Re: [R] image ()"]
> Mime-Version: 1.0 (generated by tm-edit 7.106)
>
> >>>>> "Jeffrey" == Jeffrey A Royle <royle at bearmtn-e0.cgd.ucar.edu>
2012 Jul 26
2
precision warning in delaunayn function
Dear R helpers,
I try to use the 'delaunayn' function in the 'geometry' package for
Delaunay triangulation in 2 dimensions.
For the four following points, I get a warning message :
> coord=matrix(ncol=2,byrow=TRUE,c(622633,7073452,
+ 621228,7073517,
+ 621879,7071762,
+
2003 Aug 14
1
Contouring irregular xyz data via TIN
Dear,
I have XYZ data available in a MySQL database. I get it out, can plot
the data with the plot() function, load it into a geoR datastructure.
But what I actually would like to do is a simple contouring of the data
based on a no Kriging interpolation such as TIN based.
I know the first thing I shold do is interpolate a full matrix for the
region I have my points for, then contour should
2002 Feb 26
0
Package ``deldir'' available from CRAN.
A package for calculating and plotting the Delaunay triangulation and
the Dirichlet/Voronoi tessellation, of a planar set of points, is now
available from CRAN. The package is called ``deldir''.
The package consists of a port from Splus to R of a library section
which has been available for some time from the Splus software
segment of statlib. (The Splus library section is called
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
2007 Aug 27
0
Monmonier algorithm
Hello,
Here is a late answer, but an answer nonetheless to the question I asked
almost one year ago on this list:
> On Wed, 29 Mar 2006, Thibaut Jombart wrote:
>> Hello list,
<http://tolstoy.newcastle.edu.au/R/help/06/03/24318.html#24322qlink1>
/>> /
/>> does anyone know if Monmonier algorithm is available in R? I've
checked /
/>> several spatial
2010 Feb 16
3
Triangular filled contour plot
Hi all,
I am working on a filled contour plot which shows a triangular matrix data
set (as shown below). Is there a possibilty to draw a triangular filled
contour in a equilateral triangle (like a ternary plot)?
Thanks in advance
Johannes
http://n4.nabble.com/file/n1557386/Bild3.png
--
View this message in context: http://n4.nabble.com/Triangular-filled-contour-plot-tp1557386p1557386.html
2011 Oct 12
1
XML file format for snapshot-create
I've created a very basic snapshot XML file, to allow for a description of
the snapshot. However when running the virsh command, it doesn't like the
formatting.
# virsh snapshot-create proxy_0 /vmstore/proxy_0/proxy_0_ss.xml
error: XML description for failed to parse snapshot xml document is not well
formed or invalid
This are the XML file contents...
# cat proxy_0_ss.xml
2007 Oct 29
1
about the quality option
hello,
I downloaded the Speex-1.2beta2 version ,found in the description about the usage of Speex there is a error.In the desciption it reads "--quality n Encoding quality (0-10), default 8",but in the following code i found the initialization of quality option is -1,i also do not find any other assignment to quality.what is wrong?
Looking forward your reply!!
Thanks in advance!
2023 Apr 03
1
bind glusterd to specified interface
Hi,
after a bit of time I play around with glusterfs again.
For now I want to bind the glusterd to an specified interface/ip adress.
I want to have a management net, where the service doesn't reachable
and an cluster net where the service is working on.
I read something about to define it in the
/etc/glusterfs/glusterfsd.vol file but found no valid desciption of it.
Even on
2003 Jun 01
1
persp & colors
Dear R experts!
I use image() & persp() functions for color plotting z(x,y)-type
graphics. In image() colors correspond to z-values, that's what
I want. OTOH, in persp() the col option means:
col: the color(s) of the surface facets. Transparent colours are
ignored. This is recycled to the (nx-1)(ny-1) facets.
but I'd like to persp()' colors behave like in
2009 Nov 22
1
"Over-coloring" facets on persp() plot
Dear R Community:
Recently, I have managed to plot some really useful graphs of my
research data using persp(). I have even figured out how to overplot
rectangular regions (corresponding to submatrices) with a different
color. This is accomplished by using par(new=T). I am now searching
for a way to "highlight" a set of (possibly non-contiguous) facets with
a specific color,
2018 Jan 25
0
Geometry delaunayn and deldir results, differing results from Octave due to decimal precision?
I just looked at the data at the URL you posted and it looks like it
consists
of all the points in a rectangular grid. When you triangulate a rectangle
it is
arbitrary whether you use the SW-NE or the SE-NW diagonal and that looks
like the only difference between the various algorithms.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Jan 25, 2018 at 5:14 AM, Yuen, Kam <k.yuen at
2007 Oct 30
1
Facets and/or Nested Describes
I have to confess that I did not know about facets before reading
Ashley Moran''s post:
http://aviewfromafar.net/2007/10/21/quick-and-dirty-facets-in-rspec-trunk
Not knowing about the facets solution, I made a couple of feature
requests for nested describes:
http://rubyforge.org/tracker/index.php?func=detail&aid=14980&group_id=797&atid=3152
2004 Jun 01
0
qhull in R?
Hi,
does anyone know if there is an implementation
of qhull (http://www.qhull.org/) in R? anyone is
planning on it?
"Qhull computes convex hulls, Delaunay triangulations, halfspace
intersections about a point, Voronoi diagrams, furthest-site Delaunay
triangulations, and furthest-site Voronoi diagrams. It runs in 2-d, 3-d,
4-d, and higher dimensions. It implements the Quickhull algorithm
2002 Apr 23
1
Bug: persp and colors (PR#1476)
Full_Name: Oliver Niggemann
Version: Windows 1.4 patched
OS: Windows NT 4.0
Submission from: (NULL) (141.169.250.14)
Hello,
I am working with the persp command. I want to change to color of the facets
according
to their z-value. The colors seems to be transposed, i.e. the color of a facet A
seems
to be used for a facet B which is a (defined?) way off....
An example:
nx <- 21
ny <- 21
2008 Jun 17
1
ggplot facet spacing, wrapping
I'm running into some problems with the spacing of some faceted ggplot plots.
I have a number of time series faceted to be one above another, but the
scale labels of the y axes all clobber each other at the bottom/top of each.
for example, try:
qplot(x, y, data = data.frame(x = 1:10, y = 1:10, size = 1:10), facets =
size ~ ., size = size) + scale_x_continuous(breaks = 1:10) +
2005 May 06
2
plotting image/contour on irregular grid
Hello,
I'd like to make a z(x,y) plot for irregularly spaced
x,y. What are routines are available in R for this
purpose?
Thanks,
Mark
2008 Aug 22
2
namespaces...
Hi,
I am new to dovecot and I am a bit confused with how namespaces/prefixes/separators are handled by the clients and dovecot...
I tried to understand the desciption from the conf file but without success.
With each conf I create the following path /f1/f2 on the client (thunderbird) and get the following on the dovecot server:
PREFIX= and separator=/ => .INBOX.f1.f2 + .INBOXTrash