similar to: Contour Plots

I'm trying to use R to determine the quality of a cubic Bezier curve approximation of an elliptical arc. I know the four control points and I want to compute (x,y) coordinates of many points on the curve. I can't find anything in either the base distribution or CRAN that does this; all the spline-related packages seem to be about *fitting* piecewise Bezier curves to a data set.

Hi dear all, I am wondering if there is a function existing in R that did the quadratic bezier curve interpolation? I hope to generate a bezier curve based on three sets of points: two end of the line and a control point. Thanks in advance. Tengfei -- Tengfei Yin MCDB PhD student 1620 Howe Hall, 2274, Iowa State University Ames, IA,50011-2274 [[alternative HTML version deleted]]

Hi, Recently, I started taking a look at wobbly's source (I was interested in it's physics... ;-)) I noticed that GRID_WIDTH and GRID_HEIGHT were defined to be 4, and I wanted to see how the physics look like with grid sizes that aren't 4x4. I changed the defines to my new grid size, but unfortunately it didn't work. I investigated this "bug" (it's not exactly a bug

On Tue, Feb 3, 2015 at 10:39 AM, Marius Hofert <marius.hofert at uwaterloo.ca> wrote: > Hi, > > This is most likely only a minor technicality, but I saw the > following: On page 6 of the 'parallel' vignette > (http://stat.ethz.ch/R-manual/R-devel/library/parallel/doc/parallel.pdf), > the random-number generator "L'Ecuyer-CMRG" is said to have seed >

Does anyone know how to do hermite or Bezier splines in R? I can find Matlab routines, but really need to implement them in R. Failing that I'd be interested in other conformal splines. I need to smooth and interpolate animal tracking data. Antarctic Wildlife Research Unit School of Zoology University of Tasmania PO Box 252-05 Hobart TAS, 7001 Australia Phone: (0)3 6226 2645 Fax:

On Sat, 6 May 2017 23:11:16 +0800 C Bergström <cbergstrom at pathscale.com> wrote: > On Sat, May 6, 2017 at 11:07 PM, Perry E. Metzger via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > > Howdy! > > > > I've noticed that requests for help by people like me who are > > developing front ends are often lost in the noise in the llvm-dev > >

I downloaded a binary build of release candidate 2, and it was simply a bare directory tree with no README files or other directions. Does one simply plop this in /usr/local or is there more to it? (I'm on OS X.) -- Perry E. Metzger perry at piermont.com

Hello, I have dovecot installed and it works for about 3 hours then I get this error (in /var/log/maillog): Jan 8 08:42:53 stu dovecot: auth(default): pam(grossmsm,69.131.100.47): pipe() failed: Too many open files I set pam_limits.so to allow the user 'dovecot' to have 8192 open files, and I also changed: login_process_size = 512 However, it still wont work for more than a few

Hello I'm trying to do an ldap proxy but it is not working, it just continues to access the user's mailbox. I was able to do a proxy with a user in a "passwd-file", but not ldap directory. Here is part my "args" file on the passdb ldap stanza: base = dc=example,dc=com auth_bind = yes pass_filter =

Hi, This is most likely only a minor technicality, but I saw the following: On page 6 of the 'parallel' vignette (http://stat.ethz.ch/R-manual/R-devel/library/parallel/doc/parallel.pdf), the random-number generator "L'Ecuyer-CMRG" is said to have seed "(x_n, x_{n-1}, x_{n-2}, y_n, y_{n-1}, y_{n-2})". However, in L'Ecuyer et al. (2002), the seed is given with

This question concerns rpart's facility for user-defined functions that accomplish splitting. I was interested in modifying the code so that in each terminal node, a linear regression is fit to the data. It seems that from the allowable inputs in the user-defined functions, that this may not be possible, since they have the form: function(y, wt, parms) (in the case of the

I'm experimenting with a 2.0 setup, using the sieve plugin for 2.0 from mercurial. Without sieve, everything seems to work fine. Once I put in a .dovecot.sieve file, though, nothing gets delivered, with the only hint of what's going wrong being this mess in syslog: Jul 7 13:18:00 bellman dovecot: lda(perry): Panic: file index-transaction.c: line 70 (index_transaction_init): assertion

On Sat, 6 May 2017 12:06:03 -0700 Sanjoy Das <sanjoy at playingwithpointers.com> wrote: > Hi, > > On Sat, May 6, 2017 at 11:31 AM, Perry E. Metzger via llvm-dev > <llvm-dev at lists.llvm.org> wrote: > > It makes sense to have a place for us to talk to each other where > > we're the dominant traffic, where our questions for each other > > aren't

Hi all, I am trying to compile Rgraphiz on Windows 7 64bit with R-2.13.0. I have installed Rtools213.exe from [1]. The 64bit packages in [2] provided me with the 64 bit version of graphviz. After intalling the binary version Rgraphviz 1.30 (in 32bit) it complains (as expected) that: > library(Rgraphviz) Error: package 'Rgraphviz' is not installed for 'arch=x64' I

I'd like to announce the first public demo of a hardware FLAC decoder that I and three of my colleagues have been working on over the past 8 months. This project has been developed as part of the University of Waterloo's Fourth Year Design Project requirement for undergrad students in Electrical & Computer Engineering. Our decoder has been implemented in VHDL and is currently

Hi all, I'm stuck trying to get syntax correct for the follwing type of loop. I would like to find the column with the largest value in a given row, and create a new column with a categorical variable indicating which column the highest value of "i" comes from. too=data.frame(A=rnorm(10,1),B=rnorm(10,2),C=rnorm(10,1.5)) too$large=0 too$large=for (i in 1:length(too[,c(1,2,3)]))

On Thu, 11 May 2017 20:14:11 +1000 Dean Michael Berris via llvm-dev <llvm-dev at lists.llvm.org> wrote: > FWIW, I think the "modern" way of doing any of this is with any one > of the following services (that don't need to be owned/maintained > by the LLVM Foundation): > > - Stack Overflow (maybe if it gets large enough, get a "vertical" > for just

I sent this Email to Chris Lattner and he suggested that I send it to this group. >>After reading your PLDI paper, I found the LLVM Alias Analysis >>Infrastructure page. >> >>It says that there is an implementation of Steensgaard's algorithm >>and your DSA algorithm in the >>"optional poolalloc module". I have searched all over the LLVM

Hello, Where I work we have have an interesting setup, we have 2 machines with mail accounts on them and both have dovecot. We would really like to centralize all the mail accounts on one machine, but unfortunately the administration has not approved it. However, if we could create the "illusion" that they are on the same machine that would be acceptable. If we have a 3rd machine, lets

Hello, In the pass_attrs field one can map ldap attributes to dovecot attributes. I'm wondering if I can map both ldap attribuets and static attributes to a dovecot value in the same passdb section. Also, I can't seem to find what other values (if any) can belong in the: passdb ldap { args = /path/filename } stanza. Are there any other options I can put in that stanza, I can't seem to