> and just today a colleague asked me about spline interpolation
> with general 2nd derivative boundary conditions
>s''(x_1) = s2_1, s''(x_n) = s2_2
It should possible via cubic Hermite splines.
A nontrivial design decision in my package was the computation of
slopes at the endpoints.
(Someth
Dear Yousri,
Yes, this is clearly a bug, and almost surely a long-standing one. We'll fix it
in the next release of the car package.
BTW, stringsAsFactors defaults to FALSE in R 4.0.0 (and you don't use the ch
variable in the example). Also, although it has no bearing on the bug, I'd
general
a) You will help yourself and those who you attempt to communicate with if you
learn the terminology correctly as described in the RcInstallation and
Administration manual (e.g. RShowDoc("R-admin") or
https://cran.r-project.org/doc/manuals/r-release/R-admin.html):
1) Packages are collections
The message at that URL reads:
CRAN mirror restricted to UC Berkeley
The CRAN mirror at UC Berkeley's College of Natural Resources is no
longer available to off campus users and has been removed from the CRAN
mirror list. The load on our server was too much.
Berkeley folks can continue to access
Recently a message appears when I try to view the index of the CRAN library.
Warning: unable to access index for repository
http://cran.cnr.Berkeley.edu/bin/macosx/contrib/4.0:
cannot open URL 'http://cran.cnr.Berkeley.edu/bin/macosx/contrib/4.0/PACKAGES'
Does the CRAN library have the Coronav
On 3/05/20 11:30 am, Yousri Fanous wrote:
library (car)
aa <- data.frame(x=c(2, 5, 6, 7, 8),
+ y=c(5, 10, 9, 12, 11),
+ ch=c("N", "Q", "R", "S", "T"),
+ stringsAsFactors=FALSE)
scatterplot(aa$x,aa$y,smooth = FALSE, grid = FALSE, frame = FALSE,regLine=F)
Both x and y boxplots are corre
library (car)
aa <- data.frame(x=c(2, 5, 6, 7, 8),
+ y=c(5, 10, 9, 12, 11),
+ ch=c("N", "Q", "R", "S", "T"),
+ stringsAsFactors=FALSE)
scatterplot(aa$x,aa$y,smooth = FALSE, grid = FALSE, frame = FALSE,regLine=F)
Both x and y boxplots are correct
and in particular the median of the x box is
> Abby Spurdle
> on Fri, 1 May 2020 17:21:32 +1200 writes:
> I agree, the documentation gives the impression that stats::spline
> would allow "monoH.FC".
You are right, this is a lapsus, thank you for reporting it!
> My guess is that stats::spline doesn't allow it becau
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