Re: [R] 3D plot with coordinates

Duncan Murdoch Thu, 22 Jun 2017 02:28:15 -0700

On 22/06/2017 3:15 AM, Alaios wrote:

Thanks. So after searching 4 hours last night it looks like that there
is no R package that can do this right now. Any other ideas or
suggestions might be helpful.

I don't know what you want the display to look like, but if you want itto be rotatable, rgl is probably the right package to use.

It doesn't directly support the coordinate system you're using, so youneed to figure out where you want your points (or line segments) plottedin Euclidean coordinates, and write your own function to plot those.For example, to plot (r, theta) in polar coordinates in the XY plane,use (x = r*cos(theta), y = r*sin(theta), z = 0).


Duncan Murdoch

Regards
Alex


On Wednesday, June 21, 2017 3:21 PM, Alaios via R-help
<r-help@r-project.org> wrote:


Thanks Duncan for the replyI can not suppress anything these are
radiation pattern measurements that are typically are taken at X,Y and Z
planes. See an example here, where I want to plot the measurements for
the red, green and blue planes (so the image below withouth the 3d green
structure
inside)https://www.researchgate.net/publication/258391165/figure/fig7/AS:322947316240401@1454008048835/Radiation-pattern-of-Archimedean-spiral-antenna-a-3D-and-b-elevation-cuts-at-phi.png
<https://www.researchgate.net/publication/258391165/figure/fig7/AS:322947316240401@1454008048835/Radiation-pattern-of-Archimedean-spiral-antenna-a-3D-and-b-elevation-cuts-at-phi.png%C2%A0>

I am quite confident that there is a tool in R to help me do this 3D
plot, and even better rotatable.
Thanks for the reply to allAlex

    On Wednesday, June 21, 2017 1:07 PM, Duncan Murdoch
<murdoch.dun...@gmail.com <mailto:murdoch.dun...@gmail.com>> wrote:


On 21/06/2017 5:23 AM, Alaios via R-help wrote:

Thanks a lot for the reply.After  looking at different parts of the

code today I was able to start with simple 2D polar plots as the
attached pdf file.  In case the attachment is not visible I used the
plot.polar function to create something like
that.https://vijaybarve.files.wordpress.com/2013/04/polarplot-05.png

Now the idea now will be to put three of those (for X,Y,Z) in a 3d

rotatable plane. I tried the rgl function but is not clear how I can use
directly polar coordinates to draw the points at the three different planes.

Any ideas on that?


You can't easily do what you're trying to do.  You have 6 coordinates to
display:  the 3 angles and values corresponding to each of them.  You
need to suppress something.

If the values for matching angles correspond to each other (e.g. x=23
degrees and y=23 degrees and z=23 degrees all correspond to the same
observation), then I'd suggest suppressing the angles.  Just do a
scatterplot of the 3 corresponding values.  It might make sense to join
them (to make a path as the angles change), and perhaps to colour the
path to indicate the angle (or plot text along the path to show it).

Duncan Murdoch

Thanks a lot.RegardsAlex

   On Tuesday, June 20, 2017 9:49 PM, Uwe Ligges

<lig...@statistik.tu-dortmund.de
<mailto:lig...@statistik.tu-dortmund.de>> wrote:



 package rgl.

Best,
Uwe Ligges


On 20.06.2017 21:29, Alaios via R-help wrote:

HelloI have three x,y,z vectors (lets say each is set as

rnorm(360)). So each one is having 360 elements each one correpsonding
to angular coordinates (1 degree, 2 degrees, 3 degrees,.... 360 degrees)
and I want to plot those on the xyz axes that have degress.

Is there a function or library to look at R cran? The ideal will be

that after plotting I will be able to rotate the shape.

I would like to thank you in advance for your helpRegardsAlex
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Re: [R] 3D plot with coordinates

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