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Questions tagged [s]

S is a statistical programming language

S is a statistical programming language. The aim of the language, as expressed by its creators, is "to turn ideas into software, quickly and faithfully."

The two modern implementations of S are and .

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Why are there two assignment operators, `<-` and `->` in R?

I know how to use <- and ->, and there are several writeups on the difference between equals assignment & arrow assignment, but I don't know when to prefer -> over <-. It seems the community has coalesced around using <- for assignment. Neither the…
Haleemur Ali
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Reproduce S-plus result in R

I have an old S-plus script, and I would like to reproduce the results in R. The only issue I'm having is the random seed. I know they use different algorithms for the pseudo-random number generation. In the S-plus file the seed was set…
bdeonovic
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How to get the value of list(...) in R and S functions

I am confused by how list(...) works in R and S-plus. For following code pp <- function(x, ...) { print( length( list(...)))} pp(1,,,1) In S-Plus, it works, but in R, it gives "Error in print(length(list(...))) : argument is missing, with no…
Ossifragus
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How to count and test for the sum and repeat the action

I need to test the value of'peso'(see replication code below) for each factor. Whether a factor reaches 50% of the overall sum for 'peso', the values of each factor should be paste into a new object 'results', otherwise, R should evaluate which…
daniel
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How to lag date-index in a time-series in R?

REWRITTEN QUESTION HERE: I've made some progress but am getting odd behaviour from R... Here's the xts I'm starting with Value Value2 Value3 2002-08-21 21 2 27 2003-09-10 22 42 87 2004-02-12 23 62 …
Bit Rocker
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How to run my python script when the sunOS is start booting

I copied the script (server.py) to /etc/init.d folder. chmod 0744 /etc/init.d/server.py chown root:sys /etc/init.d/server.py cd /etc/init.d ln server.py /etc/rc2.d/Sserver.py ln server.py /etc/rc0.d/Kserver.py ls /etc/init.d/*server.py…
Sarath Govind
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Math.Sin() gives incorrect value

given the following code: double sin = Math.Sin(59.0); double sin2 = Math.Sin(31.0); first result is 0.64.. second result is -0.4.. if I type the same numbers into my calculator: sin(59) = 0.86.. sin(31) = 0.51.. what do I do wrong?
julian bechtold
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What was a For loop? Why isn't it needed in R?

In the R FAQ's section about comparing S and R, we find the following: In R, For() loops are not necessary and hence not supported. What was a For() loop and why does R not need it?
J. Mini
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Function can't "see" other functions defined in global environment

fa <- function(x){x+1} fb <- function(x){x-1} f1 <- function(x, y){f(x)^y} f2 <- function(x, ab, y){ if(ab == 'a'){ f <- fa } else { f <- fb } f1(x, y) } f2(0, 'a', .5) Error in f1(x, y) : could not find function "f" The…
generic_user
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Calling predict after training with polr on multicollinear data problematic

Take a look at the code below. This question has been asked before but shut down - presumably for lack of R code to reproduce the problem. Basically, when there is multicollinearity in the data, using Polr-trained model is problematic during the…
Navneet
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Calling R from S-Plus?

Does anyone have any suggestions for a good way to call R from S-Plus? Ideally I would like to just pass code to R and get data back without having to write anything too elaborate to integrate them. I should add that I'm familiar with the RinS…
Shane
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Invalid call. Nonexistent function 'get_player' in base 'Viewport'

I run the script func search(): var pl = get_parent().get_parent().get_player() and I get the error Non-existent function 'get_player' in the base 'Viewport'. what to do? I have to get from the parent node func get_player(): return $Player but…
Влад Щекотихин
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Getting a stack overflow exception when normalizing a vector

I'm making a Vector class in C#, with a normalized parameter, which is the vector normalized. However, when I'm trying to calculate the normalized Vector, I get a stack overflow exception. Is there a better way to do it? Here is my code (inside the…
Woul
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lm()$assign: what is it?

What is the assign attribute of a linear model fit? It's supposed to somehow provide the position of the response term, but in practice it seems to enumerate all coefficients in the model. It's my understanding that assign is a carryover from S…
rimorob
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Create a matrix with gradually changing values without a for loop

In R, I am building a matrix M that stores 4 changing weights for each of 20 rounds of a game. I start with the weight vector W1 (4x1) and end game with weight vector W2 (4x1). The weight values remain constant until the change initiation round C1…
inarts
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