search for: coerce

Hi, It doesn't seem that the dispatching algo is finding my coerce method under some circumstances. Let's say I have 2 classes, A and AA and that AA is just a direct extension of A with no additional slots: setClass("A", representation(ii="integer")) setClass("AA", contains="A") I can define a method for coercing...

Greetings of Peace! I am new in R software. I want to use the correlation dimension corrDim in computing a map. I have installed the packages(fractal) in R. Now my problem is this, when I tried your example in the following site http://rgm2.lab.nig.ac.jp/RGM2/func.php?rd_id=fractal:corrDim  > library(fractal) > png(filename="corrDim_%03d_med.png", width=480, height=480) >

(I am not sure if this is a bug or a request for a more understandable warning, or possible something obvious I should be posting on r-help.) I am trying to coerce an new class object to be a DBIConnection and it does not work the way I think it should: R version 2.5.1 (2007-06-27) ... > require("RMySQL") # or require("RSQLite") Loading required package: RMySQL Loading required package: DBI [1] TRUE > m <- dbDriver("MySQL...

Hello Suppose I have a matrix mat=(1:16,2) [,1] [,2] [,3] [,4] [1,] 1 5 9 13 [2,] 2 6 10 14 [3,] 3 7 11 15 [4,] 4 8 12 16 there is a vector end=c(2,3,1,3) #coerce the 1st 2 numbers of the 1st column to a vector [1] 1 2 #coerce the 1st 3 numbers of the 2nd column and append it to the previous vector [1] 1 2 5 6 7 #coerce the 1st number of the 3rd column and append it to the previous vector [1] 1 2 5 6 7 9 #coerce the 1st 3 numbers of the 4th...

We do need an explicit method here, I think. The issue is that as() uses methods for the generic function coerce() but cannot use inheritance in the usual way (if it did, you would be immediately back with no change, since "integer" inherits from "numeric"). Copying in the general method for coercing to "numeric" as an explicit method for "integer" gives the expected r...

I would like to add a class to the SparseM package. I have a class "matrix.csr" that describes a matrix in compressed sparse row format, now I would like a class matrix.diag.csr that describes such objects when they happen to be diagonal. The idea is that matrix.diag.csr objects should behave (later in life) exactly like matrix.csr objects, the distinction is only needed in order to

I'm trying to use trace() on an S4 coerce method, but get the error Error in bindingIsLocked(what, whereM) : no binding for "coerce" What am I doing wrong? Example code follows. (I've googled the R mailing lists for "trace coerce" and "trace bindingisLocked" without finding anything relevant. Perha...

Hello. I have run the command imp<-mice(mydata, im=c("","pmm","logreg","logreg"),m=5)  for a variable with no missing data, a numeric one and two variables with binary data. I got the following message: There were 37 warnings (use warnings() to see them) > warnings() Warning messages: 1: In any(predictorMatrix[j, ]) ... : coercing argument of

I am trying to coerce a data frame column from character to datetime using strptime but keep getting an error because the length of the coerced object is always 9. What am I doing wrong here: ................................................................. > ds <- cbind(1:2, c("02/27/92 23:03:20",...

...setAs("ANY", "A", function(from) new("A", stuff=as.complex(from))) > as(6, "A") An object of class "A" Slot "stuff": [1] 6+0i > as(6L, "A") Note: Method with signature ?numeric#A? chosen for function ?coerce?, target signature ?integer#A?. "ANY#A" would also be valid An object of class "A" Slot "stuff": [1] 6+0i First thing is that the note is in contradiction with the output of selectMethod (seems like it's the method with signature "ANY#A" t...

...0 2 1 0 0 0 1 3 0 0 0 0 1 4 1 0 0 0 0 5 0 1 1 0 0 > Xbar1 <- mean(X1) > S1 <- (t(X1 - Xbar1)) %*% W1 %*% (X1 - Xbar1) Error in as.double: Cannot coerce mode list to double: .Data = list(.. Dumped > S1 <- (t(as.double(X1 - Xbar1))) %*% W1 %*% (as.double(X1 - Xbar1)) Error in as.double: Cannot coerce mode list to double: .Data = list(.. Dumped I don't understand the error message. Can anyone help? Many thanks in advance....

Hi all, Based upon an offlist communication this morning, I am somewhat confused (more than I usually am on most Monday mornings...) about the use of grep() with factors as the 'x' argument. The argument guidance in ?grep indicates: x, text a character vector where matches are sought. Coerced to character if possible. and in the Details section: Arguments which should be character strings or character vectors are coerced to character if possible. The wording of both would seem to reasonably lead to the conclusion that a factor could be coerced to a character vector by the u...

...first argument is called "link". is.family <- function(object) is.function(object) && identical(names(as.list(object))[1], "link") It threw an error when applied to SSfol > is.family(SSfol) Error in as.vector(x, "list") : cannot coerce type 'closure' to vector of type 'list' but works when I unclass SSfol > is.family(unclass(SSfol)) [1] FALSE It looks like as.list fails on any function that is assigned a class: > as.list(function(x)x+1) $x [[2]] x + 1 > as.list(structure(fun...

Something has changed in the S4 default for coercing. Am I now suppose to use setAs, or is there something else I should do to make this work: R version 2.7.0 (2008-04-22) .... > require("methods") > setClassUnion("OptionalPOSIXct", c("POSIXct", "NULL")) [1] "OptionalPOSIXct" > setClass("TSmetax",

Any one can explain why this happens or any work arounds? > setClass('foo') [1] "foo" > setAs('foo', 'character', function(from) from) > showMethods('coerce') Function "coerce": from = "ANY", to = "array" from = "ANY", to = "call" from = "ANY", to = "character" from = "ANY", to = "complex" from = "ANY", to = "environment" from = "ANY&...

Any one can explain why this happens or any work arounds? > setClass('foo') [1] "foo" > setAs('foo', 'character', function(from) from) > showMethods('coerce') Function "coerce": from = "ANY", to = "array" from = "ANY", to = "call" from = "ANY", to = "character" from = "ANY", to = "complex" from = "ANY", to = "environment" from = "ANY&...

Hi there, When I run the code below I get the error Error in xy.coords(x, NULL, log = log) :(list) object cannot be coerced to type 'double' Any tips how I can resolve this? > > library("waveslim") > > vols=read.csv(file="C:/Users/ocuk/My Documents/Abs Vol.csv", header=TRUE, > sep=",") > x<-c(vols[,1]) > #x > #data(ibm) > av.la8 <- mra(x, "...

...ready numeric. And indeed: > is.numeric(1:4) [1] TRUE > is.numeric(as(1:4, "numeric")) [1] TRUE However, 'as(1:4, "numeric")' is inconsistent with > class(as.numeric(1:4)) [1] "numeric" And, even more confusing, if you look at the coerce,ANY,numeric method: > selectMethod("coerce", c("integer", "numeric")) Method Definition: function (from, to, strict = TRUE) { value <- as.numeric(from) if (strict) attributes(value) <- NULL value } <environment: n...

...ly new to R, and I have problem here. I searched around, but did not get a solution. I have a numetrix matrix (20 by 25) saved in .csv. I read it as >sx<-read.csv("sx.csv",header=F) Then I try to convert it to numeric using >sx<-as.numeric(sx) Error: (list) object cannot be coerced to type 'double' The class of sx is "data.frame". I tried to unlist it as, s<-unlist(sx), but when I look at the dimension, > dim(s) NULL Can anyone tell me how should I load my data as a numeric matrix rather than "data.frame", or how to convert the data.fr...

I am extending a DBI connection by setClass("TSPostgreSQLConnection", contains=c("PostgreSQLConnection","TSdbOptions")) but the first time I use this I am getting a warning when it tries to coerce the TSPostgreSQLConnection to a PostgreSQLConnection. After the first use the warning stops, but the first warning is causing me problems when I do automatic checks and set my tests to stop on warnings. (I think there should be a correct way to do this that does not produce a warning.) I ca...