From: Deepayan Sarkar <deepayan.sarkar_at_gmail.com>

Date: Sat 18 Jun 2005 - 12:11:15 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 18 12:14:11 2005

Date: Sat 18 Jun 2005 - 12:11:15 EST

On 6/17/05, Lauren, Peter <Peter.Lauren@essexcorp.com> wrote:

> Hello:

*>
**>
**>
**> I would like to be able to do a 3D scatter plot from 3 variables, 2
**> independent and 1 dependent. The closest R function I could find for
**> this is "cloud". However cloud uses, as input, a matrix where the value
**> of each matrix element is the dependent variable value at that matrix
**> coordinate.
*

What makes you think that?

> My problem is that the independent variable values are

*> floating point and can be of any value. Consequently some of the matrix
**> bins may not have a value assigned. An example of the sort of data I
**> may have is as follows
**>
**>
**>
**> Independent 1 Independent 2 Dependent
**>
**> 0.145674 0.526482534 1.676986
**>
**> 0.325634 0.326385237 2.384384
**>
**> 0.235267 0.352653288 0.356483
**>
**>
**>
**> Is there any way to do a 3D scatter plot with this sort of data?
*

The following should work fine:

df <-

data.frame(x = c(0.145674, 0.325634, 0.235267), y = c(0.526482534, 0.326385237, 0.352653288), z = c(1.676986, 2.384384, 0.356483))

cloud(z ~ x * y, df)

Deepayan

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 18 12:14:11 2005

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