Displaying 20 results from an estimated 9000 matches similar to: "Predicting response from new curves using fda package"
2013 Apr 28
0
Positive Smoothing in fda package
Dear all,
I'm trying to build some fda objects using smooth.pos() from fda package.
Here is what I try:
>X <-c(0.4541139, 0.4802537, 0.5091228, 0.3894931, 2.1512258,
>7.9301281, 62.3876109, 54.1168247, 67.8769904, 91.0670615, 20.0682440)
>basis <- create.bspline.basis(c(-100, 100), 7, 5)
>MDA.fdPar <- fdPar(basis, 2, 0.01)
>MDA.fda.joint <-
2008 Dec 01
2
Warning: missing text for item ... in \describe?
Hello:
What might be the problem generating messages like "Warning:
missing text for item ... in \describe" with "R CMD check" and "R CMD
install"?
With the current version of "fda" on R-Forge, I get the following:
Warning: missing text for item 'fd' in \describe
Warning: missing text for item 'fdPar' in \describe
2007 Dec 07
0
fda, version 1.2.3
fda 1.2.3
========================
Version 1.2.3 of the fda package has just been released. This version adds to
previous versions a script to create most of the figures of chapter 6 of
"Applied Functional Data Analysis" by Ramsay and Silverman. Other changes
offer simpler calls to time warping / registration and functional principal
component functions.
The fda package supports the
2007 Aug 14
0
'fda' 1.2.2 is now available on CRAN.
The fda package supports "Functional Data Analysis" and "Applied
Functional Data Analysis" by Bernard Silverman and James Ramsay.
Functional data analysis, which lots of us like to call "FDA", is
about the analysis of information on curves or functions. FDA is a
collection statistical techniques for answering questions like, "What
are the main ways in which the
2007 Aug 14
0
'fda' 1.2.2 is now available on CRAN.
The fda package supports "Functional Data Analysis" and "Applied
Functional Data Analysis" by Bernard Silverman and James Ramsay.
Functional data analysis, which lots of us like to call "FDA", is
about the analysis of information on curves or functions. FDA is a
collection statistical techniques for answering questions like, "What
are the main ways in which the
2009 Apr 03
1
Curve fitting,FDA for biological data
Dear all,
Another newbie just got attracted to this mailing list.
I am a biologist currently working my way through R, had sort play around with python earlier this year.
I have some data exhibiting periodicity ** my data consists of peaks and valleys, with peaks arising due to the presence of a repetitive structural unit,** with x being a reference grid (position along a chromosome) and y
2012 May 21
1
fda modeling
Dear friends - We have 25 rats, 14 of these subjected to partial removal
of kidney tissue, 11 to sham operation, and then followed for 6 weeks.
So far we have data on 26 urine metabolites measured by NMR 7 times
during the observation. I have smoothed the measurements by b.splines in
fda including a roughness penalty, and inspecting the mean curves for
nephrectomized and sham animals indicate
2009 Mar 05
0
predict.fda - NAs are not allowed in subscripted assignments
Dear R users,
I'm trying to perform flexible discriminant analysis (fda) with
method bruto.
I applied the fda function on my training data:
bruto.fda <- fda
(fda.formula,data=train.data)
where fda.formula is: PRES ~ VA_D123 + VA_D124 +
VA_D127 + VA_DARU + VA_DCAN + VA_DFON +
VA_DLAP + VA_DRID + VA_DRIR +
VA_VVEG + VA_WDIN + VA_DIF3 +
VA_DIF4 + VA_DIF5 + VA_CAAC + VA_CABC +
2012 Jan 16
0
FDA predict problem
Hello R help list,
I am using the mda package and in particular the fda routine to classify a
set of 4409 trips.
I preformed a flexible discriminant analysis (FDA) using a set of 148
trips. A total of 36 predictors were considered. the resulting FDA rule was
applied to the 4409 trips and for the same predictors in order to predict
to which group the trip will belong. A consistent error is
2001 Oct 15
0
predict.fda difficulties
Dear Dr Hornik / R help list,
I am using the mda package and in particular the fda routine to classify a
set of 162 neurons falling in to 11 neuronal cell types according to 17
morphological variables. I would like to use a cross-validation approach in
which I split the data, train with one part amd then test the predictive
accuracy of the discriminant functions with the remaining part. However
2008 Nov 07
1
Problems with packages fda and splines (PR#13263)
Full_Name: David D Degras
Version: 2.8.0
OS: Mac OS X
Submission from: (NULL) (128.135.239.11)
I have recently installed the version 2.8.0 of R along with package fda (v
2.0.2)
and its dependencies (including package splines v. 2.8.0).
Here are my problems:
1) The package splines should feature functions such a predict.bs,
predict.bSpline and such and it does not! I can make calls to bs, ns,
2007 Jun 15
0
registration density profiles : FDA
Hello,
I would like to use fda library to compare sampled curves that
are density profiles. But I encounter some problems to register my data :
I know that I must use a registration function to align functions in
order to have important features found in each curve occur at roughly
the same argument value, prior to do subsequent analysis ( PCA and
cluster analysis). But I do not
2007 Oct 08
2
R and FDA trials
Yesterday I just noticed the new document on R and regulatory aspects
for biomedical research posted at
http://www.r-project.org/doc/R-FDA.pdf
Coming from an institution that performs a large number of clinical
trials for FDA and being an advocate of R myself, I have found that
the following issues usually come up when discussing the use of R for
FDA trials:
1. Most FDA submissions come down to
2009 Jan 11
2
R, clinical trials and the FDA
I hope that Marc doesn't mind, but I felt that part of his recent post
was important enough to deserve it's own subject line rather then
being lost in a 60-msg-long thread...
On Sun, Jan 11, 2009 at 10:08 AM, Marc Schwartz
<marc_schwartz at comcast.net> wrote:
...
I strongly believe that the comments regarding R and the FDA are overly
negative and pessimistic.
The hurdles to
2020 Jul 21
0
trivial typo in ?Matrix::sparse.model.matrix.Rd
On 2020-07-21 09:00, Martin Maechler wrote:
>>>>>> "AS" == Abby Spurdle
>>>>>> on Wed, 22 Jul 2020 00:28:12 +1200 writes:
> >> "No documentation for ?sparse.model.matrix? in
> >> specified packages and libraries", but it's there after
> >> "library(Ecfun)". I find that interesting,
2012 May 10
1
fda problems - version correct?
Dear friends - I am trying to understand fda and working with the 2009
book from Springer. I run the scripts directly from a new installed fda
library and include sessionInfo() below. This is from the script
fdarm-ch09.R - I seem to have got not fda_2.2.8 but 2.2.7 - is that
the problem? Where do I get .8 as I just reinstalled? Best wishes
Troels Ring, Nephrology
Aalborg, Denmark
>
2001 Jun 28
0
: k-fold cross validation for fda,mda etc
Hi all,
Has anyone tried to do k-fold cross validation for flexible discriminant
analysis ( mda library), for example, using crossval() in bootstrap?
The problem is that the function crossval() requires a separate matrix
for predictors and another for responses, whereas the function fda(),
using the formula argument only.
Is there another way of doing k-fold cross validation for functions
which
2013 Aug 30
0
Bioinformatics position at FDA-CFSAN (College Park, MD)
The Biostatistics Analytics Team at the FDA Center for Food Safety and Applied Nutrition seeks an MS/PhD in computer science (or related field) with experience in bioinformatics. The Analytics Team is responsible for computational support for projects involving large chemical and microbial hazard data sets, including bioinformatic and statistical analysis of bacterial genomic data for foodborne
2006 Aug 02
0
[Off-Topic-but somewhat related] DIA/FDA Open Toolbox Initiative
UseR's-
As this is slightly off-topic I will limit the discussion to only the
major points; for further information feel free to reply off-line.
DIA and FDA are hosting a forum to discuss (as per the Goal of the
announcement--see link below) "a vendor-neutral software product to
support validated analytic procedures ("tools") and make tool
development a collaborative effort
2012 May 17
0
new version of fda fixes bug in pca.fd and supports library(Matrix)
Hello, All:
fda_2.2.8 (functional data analysis) is now available on CRAN. This
revision includes the following improvements:
1. A bug in pca.fd has been fixed.
2. Many functions have a new argument "returnMatrix", which if
TRUE allows the function to use the sparse matrix representations in
library(Matrix). This should allow users to solve some larger