> library(sos)
> ns. <- findFn('natural spline')
found 191 matches; retrieving 10 pages
2 3 4 5 6 7 8 9 10
Downloaded 113 links in 70 packages.
> ns2 <- findFn('natural splines')
found 145 matches; retrieving 8 pages
2 3 4 5 6 7 8
Downloaded 70 links in 42 packages.
> ns2. <- ns.|ns2
> ns2.
# This displayed a table of 137 different help pages sorted to place the
package with the most matches first.
> findFn2xls(ns2.) # writes a file with a name like "nls2..xls" to the
working directory [getwd()]
# with a sheet giving a summary by package.
Hope this helps.
Spencer
On 8/2/2015 10:10 AM, Marc Lamblin wrote:
Hi all,
I'm an engineering student from Politecnico di Milano.
I want to perform Smoothing using Smoothing B-splines on syntethic
data. The splines must be NATURAL (at the edges the second and third
order derivates are zero).
How can I impose this constraint?
I have searched in R documentation. For Smoothing I use the fda
package. From the description of the function smooth.basis() it seems
that it is not possible to use natural B-splines. I have found only
the function ns() from splines package but in this way you can obtain
only the basis and I have seen that this function is used in models
expressed in symbolic notation.
Thanks in advance!!
mggl
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