Re: [R] RGL- Drawing Circle
thanks for the help, Duncan. but when you said study some geometry, do you mean the rgl package pdf reference mannual or other documents? please clarify. i am a total beginner on rgl. graham -- View this message in context: http://r.789695.n4.nabble.com/RGL-Drawing-Circle-tp4278717p4288776.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] RGL- Drawing Circle
On 12.01.2012 13:21, gli wrote: thanks for the help, Duncan. but when you said study some geometry, He meant basic school maths, I suppose. Uwe do you mean the rgl package pdf reference mannual or other documents? please clarify. i am a total beginner on rgl. graham -- View this message in context: http://r.789695.n4.nabble.com/RGL-Drawing-Circle-tp4278717p4288776.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] RGL- Drawing Circle
thanks Duncan. I think want my circle to be in user coordinates. I tried the first code u gave me and it gives me a circle. but how can i: 1) change the radius ? 2) place the circle at a given x,y,z coordinate? 3) turn it 90 degree up like these circle plate bus stop? http://www.geocities.co.jp/yuganatabi/bus-stop-aba.html 4) and finally, set the orientation angle of the circle plate? grateful if u give me some directions or at least let me know if it is possible or not. graham -- View this message in context: http://r.789695.n4.nabble.com/RGL-Drawing-Circle-tp4278717p4285503.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] RGL- Drawing Circle
On 11.01.2012 15:08, gli wrote: thanks Duncan. I think want my circle to be in user coordinates. I tried the first code u gave me and it gives me a circle. but how can i: 1) change the radius ? 2) place the circle at a given x,y,z coordinate? 3) turn it 90 degree up like these circle plate bus stop? http://www.geocities.co.jp/yuganatabi/bus-stop-aba.html 4) and finally, set the orientation angle of the circle plate? What about readin the help pages for the functions Duncan cited? Uwe Ligges grateful if u give me some directions or at least let me know if it is possible or not. graham -- View this message in context: http://r.789695.n4.nabble.com/RGL-Drawing-Circle-tp4278717p4285503.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] RGL- Drawing Circle
On 12-01-11 9:08 AM, gli wrote: thanks Duncan. I think want my circle to be in user coordinates. I tried the first code u gave me and it gives me a circle. but how can i: 1) change the radius ? 2) place the circle at a given x,y,z coordinate? 3) turn it 90 degree up like these circle plate bus stop? http://www.geocities.co.jp/yuganatabi/bus-stop-aba.html 4) and finally, set the orientation angle of the circle plate? grateful if u give me some directions or at least let me know if it is possible or not. 1. Please quote the message you're replying to. 2. Study some geometry, and it should be pretty obvious how to modify the lines you didn't quote. Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] RGL- Drawing Circle
hi, i want to draw a simple circle by using 3d package RGL. i think i can use the command rgl.lines by studying the code from: http://www.swiftless.com/tutorials/opengl/circle.html but is there a faster and easier way to do it?? graham -- View this message in context: http://r.789695.n4.nabble.com/RGL-Drawing-Circle-tp4278717p4278717.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] RGL- Drawing Circle
On 09/01/2012 10:12 AM, gli wrote: hi, i want to draw a simple circle by using 3d package RGL. i think i can use the command rgl.lines by studying the code from: http://www.swiftless.com/tutorials/opengl/circle.html but is there a faster and easier way to do it?? The code on that page is much more complicated than necessary. rgl will handle most of the calls to OpenGL; you just need to work out the geometry of the circle. The difficulty you might have is whether you want something that appears to be a circle, or something that is a circle in user-coordinates. For the latter, try something like: n - 300 theta - seq(0, 2*pi, len=n) x - cos(theta) y - sin(theta) z - rep(0, n) lines3d(x,y,z) The former is harder; I'd probably do it by drawing a sphere and turning off lighting, but the overlaps don't look quite right if they aren't all the same colour: spheres3d(rnorm(10), rnorm(10), rnorm(10), lit=FALSE, col=rainbow(10)) Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
