Displaying 20 results from an estimated 10000 matches similar to: "Comparing R and SAs"
2008 Dec 03
2
reading version 9 SAS datasets in R
Hi,
I am trying to read a SAS version 9.1.3 SAS dataset into R (to preserve
the SAS labels), but am unable to do so (I have read in a CSV version).
I first created a transport file using the SAS code:
libname ces2 'D:\CES Analysis\Data';
filename transp 'D:\CES Analysis\Data\fadata.xpt';
/* create a transport file - R cannot read file created by proc cport */
proc
2009 Jun 19
4
Recursive partitioning algorithms in R vs. alia
Dear R-helpers,
I had a conversation with a guy working in a "business intelligence"
department at a major Spanish bank. They rely on recursive partitioning
methods to rank customers according to certain criteria.
They use both SAS EM and Salford Systems' CART. I have used package R
part in the past, but I could not provide any kind of feature comparison
or the like as I have no
2017 Aug 14
1
Statistical / data mining methods in R and not in SAS?
Hi, and sorry for asking such an unspecific question.
Does anybody know of statistical / data mining methods that are available in R
that are not in SAS ? With SAS I mean the SAS System Version 9.4 and SAS
Enterprise Miner. I don't expect a complete list, just two or three examples
or hints where and what to look for.
I found some older comparisons, and the R methods mentioned there
2017 Aug 16
0
Statistical / data mining methods in R and not in SAS?
> On Aug 14, 2017, at 12:22 PM, fs <mail at friedrich-schuster.de> wrote:
>
> Hi, and sorry for asking such an unspecific question.
>
> Does anybody know of statistical / data mining methods that are available in R
> that are not in SAS ? With SAS I mean the SAS System Version 9.4 and SAS
> Enterprise Miner. I don't expect a complete list, just two or three
2010 Jan 13
3
Updated comparison table for SAS-SPSS Add-ons and R Functions
Hi All,
I have substantially expanded the table that compares SAS and SPSS
add-on modules to somewhat equivalent R packages. This new version is
at:
http://r4stats.com/add-on-modules
and I would very much appreciate any feedback you might have on it.
The site http://r4stats.com is the replacement to
http://RforSASandSPSSusers.com and includes the support files for both
"R for SAS and SPSS
2010 Jun 20
6
Popularity of R, SAS, SPSS, Stata...
Hi All,
I've been fiddling around with various ways to estimate the popularity
of R, SAS, SPSS, Stata, JMP, Minitab, Statistica, Systat, BMDP, S-PLUS,
R-PLUS and Revolution R. It's not an easy task. You can see what I've
come up with so far at http://r4stats.com/popularity . I'm sure people
will have plenty of ideas on how to improve this, so please let me know
what you think.
2009 May 31
1
warning message when running quantile regression
Hi All,
I am running quantile regression in a "for loop" starting with 1
variable and adding a variable at a time reaching a maximum of 20
variables.
I get the following warning messages after my "for" loop runs. Should I
be concerned about these messages? I am building predictive models and
am not interested in inference.
Warning messages:
1: In
2010 Jan 11
1
Forming Portfolios for Fama / French Regression
Hi mates,
I have a problem. I am new to R and want to conduct the Fama/French asset
pricing test. As I am from Germany, I cannot use the already computed
factors from French's website, but need to compute them myself. So I have to
sort a number of stocks into different portfolios using one factor, then
subdivide these portfolios into several more using another factor, then
compute portfolio
2009 Nov 05
3
Bhattacharyya distance metric
I need to use the Bhattacharyya distance metric to determine population
separation. Has anyone written a Bhattacharyya distance metric function in
R?
--
View this message in context: http://old.nabble.com/Bhattacharyya-distance-metric-tp26221259p26221259.html
Sent from the R help mailing list archive at Nabble.com.
2009 Jul 27
2
How should i change the SAS Codes into R Codes?
Dear R users,
I have a SAS codes with several loops in it, and i hope to use R to do the
same task. The SAS codes are as follows,
/*to generate the dataset*/
DATA Single_Simulation;
DO se=0 to 1 by 0.01;
DO sp=0 to 1 by 0.01;
DO DR=0 to 1 by 0.01;
TR=(DR+sp-1)/(se+sp-1+1.0e-12);
Adjust_Factor=TR/(DR+1.0e-12);
OUTPUT;
END;
END;
END;
RUN;
/*to select some data*/
DATA
2009 Jun 07
1
Inf in nnet final value for validation data
Hi,
I use nnet for my classification problem and have a problem concerning the calculation of the final value for my validation data.(nnet only calculates the final value for the training data). I made my own final value formula (for the training data I get the same value as nnet):
# prob-matrix
pmatrix <- cat*fittedValues
tmp <- rowSums(pmatrix)
# -log likelihood
2009 Sep 21
3
compute differences
Hi,
I have a problem.
I have a data frame looking like:
ID val
A? .3
B? 1.2
C? 3.4
D? 2.2
E? 2.0
I need to CREATE the following TABLE:
CASE?? DIFF
A-A??? 0
A-B??? -0.9
A-C??? -3.1
A-D??? -1.9
A-E??? -1.7
B-A??? ...
B-B??? ...
B-C
B-D
B-E
C-A
C-B
C-C
C-D
C-E
D-A
D-B
D-C
D-D
D-E
E-A
E-B
E-C
E-D
E-E
WHERE CASE IS THE COUPLE OF ELEMENTS CONSIDEREDM AND DIFF IS THE computed DIFFERENCE between
2009 May 29
1
Backpropagation to adjust weights in a neural net when receiving new training examples
I want to create a neural network, and then everytime it receives new data,
instead of creating a new nnet, i want to use a backpropagation algorithm
to adjust the weights in the already created nn.
I'm using nnet package, I know that nn$wts gives the weights, but I cant
find out which weights belong to which conections so I could implement the
backpropagation algorithm myself.
But if anyone
2008 Oct 02
1
SAS enterprise guide in R?
Hello,
Our company has been looking at "SAS enterprise guide 4" (Insightful Miner is a similar product from Insightful, I believe) which seems to provide a nice graphical way of displaying/managing a process or project. It is also accessible to non-programmers.
Does any of the R GUIs provide similar functionality please? Can you point me in the right direction?
Thanks in advance
Best
2009 Jun 17
3
Problem in 'Apply' function: does anybody have other solution
Dear All,
I am having some problem in apply function.
I have some data like below. I want to get a range vector (which is max-min
value for each row , ignoring NA values.)
> Species.all[1:10,]
V2 V3 V4 V5 V6 V7 V8 V9
1 57543 55938 47175 54922 36032 5785 29497 7286
2 42364 40472 29887 40107 19723 2691 14445 3258
3 19461 19646 18538 22392 6744 794
2005 May 18
4
standardization
SAS Enterprise Miner recommendeds to standardize using X / STDEV(X)
versus [X ? mean(X)] / STDEV(X)
Any thoughts on this? Pros Cons
Philip
2009 Jul 11
3
Reading data entered within an R program
Dear R-helpers,
I know of two ways to reading data within an R program, using
textConnection and stdin (demo program below). I've Googled about and
looked in several books for comparisons of the two approaches but
haven't found anything. Are there any particular advantages or
disadvantages to these two approaches? If you were teaching R beginners,
which would you present?
Thanks,
Bob
2009 May 27
3
Neural Network resource
Hi All,
I am trying to learn Neural Networks. I found that R has packages which can help build Neural Nets - the popular one being AMORE package. Is there any book / resource available which guides us in this subject using the AMORE package?
Any help will be much appreciated.
Thanks,
Indrajit
2010 May 12
2
Data Mining Survey
Dear R-Helpers,
SAS Institute just mailed out the notice below regarding a survey of
people who do data mining. To help keep the survey from becoming biased
toward commercial software, I thought it would be good to post it here
as well.
Cheers,
Bob
Fourth Annual Data Miner Survey
Rexer Analytics has asked statistical and data mining software vendors
to forward this survey as a courtesy. (SAS is
2003 Sep 04
7
Comparison of SAS & R/Splus
I am one of only 5 or 6 people in my organization making the
effort to include R/Splus as an analysis tool in everyday work -
the rest of my colleagues use SAS exclusively.
Today, one of them made the assertion that he believes the
numerical algorithms in SAS are superior to those in Splus
and R -- ie, optimization routines are faster in SAS, the SAS
Institute has teams of excellent numerical