search for: cplx

I just noticed that read.table() and type.convert() interpret the string "i" as a missing value of type complex. > str(read.table(text=c("i\ni\ni\ni\n"))) 'data.frame': 4 obs. of 1 variable: $ V1: cplx NA NA NA ... > str(type.convert("i")) cplx NA If there are other strings in the column it makes the column character so most people will not notice > str(read.table(text=c("i\nii\niii\niv\n"))) 'data.frame': 4 obs. of 1 variable: $ V1: Factor...

Hi Timothy, Sorry for late reply. I have upstreamed the patch to fix the regression here: https://github.com/projectNe10/Ne10/commit/ee5d856cd9cb8c4a15ace567df4239f4e788d043 I have tested it with Vish's branch: http://git.linaro.org/people/viswanath.puttagunta/opus.git/shortlog/refs/heads/rfcv3_fft_fixed) Both unit test dft and unit test mdct passed on ARM v7/v8, floating point/fixed

Hello Does anybody know how one can compute d largest eigenvalues/eigenvectors in R, like in MATLAB eigs function ? eigen function computes all eigenvectors/eigenvalues, and they are slightly different than those generated by matlab eigs. Thanks in advance -- View this message in context: http://www.nabble.com/matlab-eigs-function-in-R-tp17619641p17619641.html Sent from the R help mailing list

...rget) != data.class(current)) { + msg <- c(msg ,paste("target is ", data.class(target), ", current is ", + data.class(current), sep = "")) + return(msg) + } + lt <- length(target) lc <- length(current) cplx <- is.complex(target) - if(lt != lc) - return(paste(if(cplx)"Complex" else "Numeric", - ": lengths (", lt, ", ", lc, ") differ", sep = "")) + if(lt != lc) { + msg <- c(msg ,paste(if(cplx)"Complex...

The following code: --8<---------------cut here---------------start------------->8--- > myfun <- function (x) list(x=x,y=x*x) > z <- as.data.frame(do.call(rbind,lapply(1:3,function(x) c(a=paste("a",x,sep=""),as.list(unlist(list(b=myfun(x),c=myfun(x*x*x)))))))) > z a b.x b.y c.x c.y 1 a1 1 1 1 1 2 a2 2 4 8 64 3 a3 3 9 27 729

...t;wdunlap at tibco.com> wrote: > > I just noticed that read.table() and type.convert() interpret the string "i" > as a missing value of type complex. >> str(read.table(text=c("i\ni\ni\ni\n"))) > 'data.frame': 4 obs. of 1 variable: > $ V1: cplx NA NA NA ... >> str(type.convert("i")) > cplx NA > > If there are other strings in the column it makes the column character so > most people will not notice >> str(read.table(text=c("i\nii\niii\niv\n"))) > 'data.frame': 4 obs. of 1 va...

Dear list, I'm facing an issue with the automated documentation of a function using roxygen2. The function has a complex-valued default argument, which is picked up by roxygen2 using formals() to generate the corresponding Usage section of the Rd file. Unfortunately, it appears that formals() reformats complex numbers. Consider the example below, test <- function(a = 1+2i){} >

Hi all, Surprisingly (at least to me), `as.complex(NA_real_)` results in `complex(real = NA_real_, imaginary = 0)` rather than `NA_complex_`. It seems to me that this goes against the docs of `as.complex()`, which say this in the Details section: "Up to R versions 3.2.x, all forms of NA and NaN were coerced to a complex NA, i.e., the NA_complex_ constant, for which both the real and

On 24/02/2018 1:53 PM, William Dunlap via R-help wrote: > x1 = rbind(unique(preval),mydat) > x2 <- x1[is.na(x1)] <- 0 > x2 # gives 0 > > Why introduce the 'x2'? x1[...] <- 0 alters x1 in place and I think that > altered x1 is what you want. > > You asked why x2 was zero. The value of the expression > f(a) <- b > and assignments

...y be casted to other complex types: c32 %res = fptrunc c64 %a to c32 c64 %res = fpext c32 %a to c64 insertvalue and extractvalue may be used with the special index values "real" and "imag": %real = f32 extractvalue c32 %a, real %real = c64 insertvalue c64 undef, f64 %r, real %cplx = c64 insertvalue c64 %real, f64 %i, imag The pseudo-value "real" shall evaluate to the integer constant zero and the pseudo-valid "imag" shall evaluate to the integer constant one, as if extractvalue/insertvalue were written with 0/1. The use of any other index with a complex...

Currently, I load the RData file then ls() and str(). But loading the file takes too long if the file is big. Most of the time, I only interested what the variables are in the the file and the attributes of the variables (like if it is a data.frame, matrix, what are the colnames/rownames, etc.) I'm wondering if there is any facility in R to help me avoid loading the whole file.

...ecialness is allowing bitcasts of vector of complex to equal-width vectors of their underlying type. insertvalue and extractvalue may be used with the special index values "real" and "imag": %real = f32 extractvalue c32 %a, real %real = c64 insertvalue c64 undef, f64 %r, real %cplx = c64 insertvalue c64 %real, f64 %i, imag The pseudo-value "real" shall evaluate to the integer constant zero and the pseudo-valid "imag" shall evaluate to the integer constant one, as if extractvalue/insertvalue were written with 0/1. The use of any other index with a complex...

...f complex to equal-width > vectors of their underlying type. > > insertvalue and extractvalue may be used with the special index values "real" > and "imag": > > %real = f32 extractvalue c32 %a, real > %real = c64 insertvalue c64 undef, f64 %r, real > %cplx = c64 insertvalue c64 %real, f64 %i, imag > > The pseudo-value "real" shall evaluate to the integer constant zero and the > pseudo-valid "imag" shall evaluate to the integer constant one, as if > extractvalue/insertvalue were written with 0/1. The use of any other...