[R] contourplot

[Pascal Oettli]

Hi,

What is the result of:

contourplot(Y~X1+X2,data=pr2)

HTH,
Pascal


Le 13/03/22 8:57, Steven LeBlanc a écrit :
> Greets,
>
> I'm using a data frame that looks like:
>> head(pr2)
>    X1   X2 X3 X4    Y      fit       res
> 1 44 33.2  5 30 41.2 39.22201  1.977991
> 2 43 33.8  4 41 31.7 38.48476 -6.784761
> 3 48 40.6  3 38 39.4 44.78278 -5.382783
> 4 52 39.2  7 48 57.5 51.48134  6.018656
> 5 71 45.5 11 53 74.8 68.25585  6.544153
> 6 44 37.5  9 65 59.8 53.27743  6.522569
>
> Along with the command:
>> contourplot(Y~X1*X2,data=pr2)
>
> But I get a blank plot. I thought it might be because the data were unsorted or sparse, so I made another ordered data frame as follows:
>
>> head(new)
>    X1 X2 X3 X4       resp
> 1  1  1  1  1 -10.810406
> 2  2  2  2  2  -7.657712
> 3  3  3  3  3  -4.505018
> 4  4  4  4  4  -1.352323
> 5  5  5  5  5   1.800371
> 6  6  6  6  6   4.953065
>
> But the result is the same. Any idea why this does not work?
>
> Best Regards,
> Steven
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.
>