similar to: misc3d_0.4-0 now available on CRAN

The misc3d package provides a small collection of mostly rgl-based functions for 3D data: contour3d Uses rgl to render isosurfaces, or three-dimensional contours, computed by the marching cubes algorithm. image3d Crude 3d analog of image() using rgl to plot points on a three dimensional grid representing values in a three dimensional array. Assumes high

The misc3d package provides a small collection of mostly rgl-based functions for 3D data: contour3d Uses rgl to render isosurfaces, or three-dimensional contours, computed by the marching cubes algorithm. image3d Crude 3d analog of image() using rgl to plot points on a three dimensional grid representing values in a three dimensional array. Assumes high

Hi, I have a question about exporting interactive 3D plots. I use the following code to plot a contour of a trivariate normal distribution: library(mvtnorm) library(rgl) library(misc3d) n=25 x=seq(-3,3,length=n) X=cbind(rep(x,each=n**2),rep(rep(x,each=n),n),rep(x,n**2)) p=array(dmvnorm(X,sigma=diag(3)*0.5+0.5),c(n,n,n)) contour3d(p,x,x,x,level=mean(p)) lim=c(-3,3)

I am looking for examples of how to plot with contour3d() to a PNG or PDF file, add axes and other elements to the isosurface plot, and use contour3d in conjunction with lattice. Regarding lattice, I'm not necessarily looking for conditioning on the data shown in the isosurface plots, just a way to show multiple plots in one figure and label them. I am new to the packages misc3d and rgl.

So I wanted to export a contour3d object into VTK and it worked well enough, except the top of the ball (the contour) was missing. Example below, or gist here: https://gist.github.com/muschellij2/5126544 rm(list=ls()) require(misc3d) f <- function(x, y, z) x^2+y^2+z^2 x <- seq(-2,2,len=20) ball <- contour3d(f,4,x,x,x, draw=FALSE) drawScene.rgl(ball) ### get the triangles allids

Hey, Is there any function plotting several "implicit functions" (F(x,y)=0) on the same fig. Is there anyone who has an example code of how to do this? The contour3d function in the misc3d package only work with the functions with three dimensions. Thanks a lot. Many thanks for your help. KnifeBoot [[alternative HTML version deleted]]

I'm making some 3D plots with contour3d from misc3d and wireframe from lattice. I want to view them from below; i.e. the negative z-axis. I can't figure out how to do so. I would like my point of view looking up from below, with the z, y, and x axes positive going away. Can anyone tell me the correct settings for screen to achieve this? Here is what I've found so far:

I saw that in rgl:::writeWebGL that "Polygons will only be rendered as filled; there is no support in WebGL for wireframe or point rendering.". I found that you can easily use contour3d to make reproducible contour web figures, such as (taken from contour3d help) library(AnalyzeFMRI) a <- f.read.analyze.volume(system.file("example.img", package=

Dear R users -- I think this question was asked before but there was no reply to it. I would appreciate any suggestion any of you might have. I am interested in plotting several "implicit functions" (F(x,y,z)=0) on the same fig. Is there anyone who has an example code of how to do this? Thank you Yihsu

Hi, I'm trying to make sense of the image3d plots in misc3d. Unfortunately I can't find any authors on the help pages of the function to e-mail directly. In the following toy example, I'm puzzled as to why (1) the positions of the image plot on the axes include negative values when I think I've specified all to be 1:3 and (2) the logic that needs to be adhered to in order to

Hi, I have an array of 2d node locations and an array triangles, and would like to plot something like a image or persp. An example of doing it with rgl is: library(ncdf) library(rgl) # wget http://www.maplepark.com/~drf5n/extras/teapot.nc teapot<-open.ncdf("teapot.nc") z<-get.var.ncdf(teapot,"tris") l<-get.var.ncdf(teapot,"locations")

You can file it as a wishlist item in the bug trackign system. Without a compelling case or a complete and well tested patch or both I doubt it will rise to the top of anyone's priority list. Best, luke On Sun, 15 Sep 2019, Jan Gorecki wrote: > Thank you Luke for prompt reply. > Is it possible then to request a new function to R C API "message" > that would equivalent to

On Fri, 1 Nov 2019, Jan Gorecki wrote: > Thank you Luke. > That is why I don't use Rf_inherits but INHERITS which does not > allocate, provided in the email body. Your definition can allocate because STING_ELT can allocate. getAttrib can GC in general. Currently it would not GC or allocate in this case, but this could change. You can't assume thread-safety for calls into the R

I found that also; fixed in r79386 in the trunk. Will port to R-patched shortly. Best, luke On Thu, 29 Oct 2020, Martin Morgan wrote: > This > > Index: src/main/altrep.c > =================================================================== > --- src/main/altrep.c (revision 79385) > +++ src/main/altrep.c (working copy) > @@ -275,10 +275,11 @@ > SEXP psym =

On Thu, 26 Jul 2018, G?bor Cs?rdi wrote: > On Thu, Jul 26, 2018 at 1:43 PM <luke-tierney at uiowa.edu> wrote: >> >> On Thu, 26 Jul 2018, G?bor Cs?rdi wrote: >> >>> On Thu, Jul 26, 2018 at 12:25 PM Barry Rowlingson >>> <b.rowlingson at lancaster.ac.uk> wrote: >>>> >>>> On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi

On Thu, 22 Jan 2015, Michael Lawrence wrote: > On Thu, Jan 22, 2015 at 11:44 AM, <luke-tierney at uiowa.edu> wrote: >> >> For default methods there ought to be a way to create those so the >> default method is computed at creation or load time and stored in an >> environment. > > We had considered that, but we thought the definition of the function >

For now you can use R_altrep_inherits(x, R_compact_intseq_class) The variable R_compact_intseq_class should currently be visible to packages on all platforms, though that may change if we eventually provide a string-based lookup mechanism, e.g. somehting like R_find_altrep_class("compact_intseq", "base") Best, luke On Tue, 4 Jun 2019, Mark Klik wrote: > Hi Gabriel,

Hi, I am trying to install the misc3d package on a Windows (XP) installation of R 2.0.1 using install.packages("misc3d") but with no success. I have used this approach with other packages OK, but for misc3d I get the following output... trying URL `http://cran.r-project.org/bin/windows/contrib/2.0/PACKAGES' Content type `text/plain; charset=iso-8859-1' length 27996 bytes

Come on, folks. There is no NSE involved in calls to get(): it's standard evaluation all the way into the C code. Prior to the change a first argument that is anything other than a character vector would produce an error. After the change, passing in a symbol will do the obvious thing. Code that worked previously without error (i.e. called get() with string values) will continue to work

On Mon, 7 Oct 2019, Lionel Henry wrote: > > >> On 7 Oct 2019, at 17:04, Tierney, Luke <luke-tierney at uiowa.edu> wrote: >> >> Think about what happens if an >> argument in a pipe stage contains a pipe. (Not completely >> unreasonable, e.g. for a left_join). > > It should work exactly as it does in a local environment. > > ``` > `%foo%`