# search for: nmax

Displaying 20 results from an estimated 55 matches for "nmax".

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2017 Jun 04
1
nmax parameter in factor function
I'll go just a bit "fer-er." It appears the anomaly -- I hesitate to call it a bug -- is in the C code for duplicated.default(): > duplicated(letters[1:10],nmax=10)  FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > duplicated(letters[1:10],nmax=9)  FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > duplicated(letters[1:10],nmax=8) ## for all nmax <9 Error in duplicated.default(letters[1:10], nmax = 8) : hash table...
2017 Jun 04
1
nmax parameter in factor function
Well, you won't like this, but it is kind of wimpily (is that a word?) documented: If you check the code of factor(), you will see that nmax appears as an argument in a call to unique(). ?unique says for nmax, "... see duplicated" . And ?duplicated says: "If nmax is set too small there is liable to be an error: nmax = 1 is silently ignored." So sometimes you get an error when nmax is too small with the hash table e...
2017 Jun 04
1
nmax parameter in factor function
I have been trying to understand how the argument 'nmax' works in 'factor' function. R-Documentation states - "Since factors typically have quite a small number of levels, for large vectors x it is helpful to supply nmax as an upper bound on the number of unique values." In the code below what is the reason for error when value of...
1999 Jan 29
1
cex
Hi, I was hoping someone could help me with this problem. I’m trying to produce what can be referred to as L’Abbe plots, where a character (my preference is a circle) is plotted at some specified co-ordinates and the size of the character is proportional to a weighting variable. I’ve tried this plot (x, y, type="n") size <- weight/mean(weight) for ( i in 1:length(x) ) {
2011 Nov 10
4
..., I = int_a^b f(x) dx where the integrand f: x in IR -> f(x) in IR^p is vector-valued. integrate() only allows scalar integrands, thus I would need to call it many (p=200 typically) times, which sounds suboptimal. The cubature package seems well suited, as illustrated below, library(cubature) Nmax <- 1e3 tolerance <- 1e-4 integrand <- function(x, a=0.01) c(exp(-x^2/a^2), cos(x)) adaptIntegrate(integrand, -1, 1, tolerance, 2, max=Nmax)\$integral  0.01772454 1.68294197 However, adaptIntegrate appears to perform quite poorly when compared to integrate. Consider the following exa...
2006 Apr 26
2
Memory usage and limit
.... The whole data set is about 600 MB when stored as plain ASCII file. The following code was used in the benchmarking runs: c = list(var1=0, var2=0, var3="", var4="", .....var65="") A <- scan("test.dat", skip = 1, sep = ",", what = c, nmax=XXXXX, quiet=FALSE) summary(A) where XXXX = 1000000 or 2000000 I made two runs with nmax=1000000 and nmax=2000000 respectively. The first run completed successfully, in about hour of CPU time. However, the actual memory usage exceeded 2.2GB, about 7 times of the acutal file size on disk. The...
2008 Sep 25
6
Dot plot - equivalent of MINITAB
hi folks, Bit of a newbie, but I''ve spent a fair bit of time looking for an answer on this, with no joy. Can anyone help me? Dataset: A single column of values in a csv file (eg. 52, 53, 54, 85, etc) Goal: In Minitab, you have what they call a dot plot. It''s a histogram, where a single dot represents a set of identical values (eg. 57, 57, 57 would be one dot). Multiple
2010 Aug 18
3
Hi folks, I followed an online example to input data; > x = scan(1,2,3,4,5) Error in scan(1, 2, 3, 4, 5) : either specify ''nmax'' or ''n'', but not both. It can''t work. > x = c(1,2,3,4,5) > x  1 2 3 4 5 It works. Whether "scan" is replaced with "c" ? > ?c ..... Usage: c(..., recursive=FALSE) TIA B.R. Stephen L
2017 Aug 13
1
ggplot's aes_ doesn't work as expected for x=factor()
...) + geom_bar(stat="identity") # works # it doesn't work here, where only change is using x=factor() ggplot(df, aes_(x=factor(as.name(varnames)), y=as.name(varnames), fill=as.name(varnames))) + geom_bar(stat="identity") # doesn't work Error in unique.default(x, nmax = nmax) : unique() applies only to vectors # aes_ does work if I make the x variable a factor ahead of time df2 <- df df2\$Var1 <- as.factor(df2\$Var1) ggplot(df2, aes_(x=as.name(varnames), y=as.name(varnames), fill=as.name(varnames))) + geom_bar(stat="identity") # works...
2013 Jan 28
1
gigFit problems
...etely off into strange territory. I hope that fixing the above problem would fix this. ---------------------------------------- Problem three: When I do the above with plot gigFit(dataVector,plot=TRUE) I get a warning Warning message: " In incompleteBesselK(x[i], y[i], -lambda, tol = ibfTol, nmax = nmax) : Maximum order exceeded Result may be unreliable " Ray -- This space is for my comments on the world (Intentionally left blank.)
2012 Oct 20
4
Error: not 'a real'?
...r","numeric", "numeric", "numeric", "numeric", "numeric", "numeric", "numeric", "numeric", "numeric", "numeric") # Error: Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, (from #2) : scan() expected ''a real'', got ''894.6'' How is ''894.6'' not ''a real [number]''? Thanks for the ensuing enlightenment or punishment... Best, Brian
2007 Dec 12
12
Importing Large Dataset into Excel
...t the data with the following line of code: > newborn<-read.table("newborn edit.csv", header=T, sep=",") where "newborn edit.csv" is the name of the file. Unfortunately, I''m getting back the following error message: "Error in scan(file,, what, nmax, sep, dc, quote, skip, nlines, na.string, : line 528 did not have 44 elements" As far as I can tell, line 528 of the spreadsheet table does have the same number of elements as the other rows - by chance can this error message mean anything else? Also, is there an easier way to import data f...
2008 Sep 19
10
Novice question about getting data into R
I found it easy to use R when typing data manually into it. Now I need to read data from a file, and I get the following errors: > refdata = > read.table("K:\\MerchantData\\RiskModel\\refund_distribution.csv", header > = TRUE) Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : line 1 did not have 42 elements > refdata = > read.table("K:\\MerchantData\\RiskModel\\refund_distribution.csv") Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : line 2 did not have 42 elements > (...
2003 Jun 26
1
krige in gstat() package
HI, I wonder does anyone have experience with doing sequential gaussian simulation with krige() function in gstat? I find it VERY slow compared to use krige() to achieve kriging function itself.. I wonder why, is that because it has to model the variogram, and do the kriging separately for each point to be simulated? so it would be N times slower to achieve the simulation than the kriging if
2010 Nov 28
2
Dear R Helpers, I need to find the root of following equation. 0.0016^2 = (0.001*x)^2 + (0.002 * (1-x))^2 + 2 * 0.7 *0.001*0.002 * x * (1-x). I had tried using "animation " package as follows. # My Code library(animation) ani.options(nmax = 500) solu = newton.method(function(x) 0.0016^2 - 0.001^2*x^2 - 0.002^2*(1-x)^2 - 2*0.7*0.001*0.002*x*(1-x), 1, c(-1,1)) solu\$root # However, I am not getting the solution. Please guide. Amy [[alternative HTML version deleted]]
2013 Nov 18
1
Reading in csv data with ff package
...pecifying colClasses): ------------------------------------------------- > data = read.csv.ffdf(x=NULL,file="data.csv",nrows=1001,first.rows = 500, next.rows = 1005,sep=",",colClasses = c("integer","integer","logical"))Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : scan() expected ''an integer'', got ''"J"''> data = read.csv.ffdf(x=NULL,file="data.csv",nrows=1001,first.rows = 500, next.rows = 1005,sep=",",colClasses = c("integer","c...
2006 Jan 11
2
Levelplot not working from file
...the levelplot function from a command file. Here is the code: library(sp) library(gstat) library(lattice) gatherData <- read.table("~/gather.txt", header = TRUE) grd = makegrid(gatherData\$x, gatherData\$y, cell.size = 5) k <- krige(z~x+y, ~x+y, data = gatherData, newdata = grd, nmax = 5) levelplot(var1.pred~x+y, k, aspect = mapasp(k), main = "Predicted 5m") It executes fine (it plots up) when I cut and paste to the command prompt but it seems to be missed (nothing occurs) when I call the source file. I am using OSX. Thanks for any help. Matt [[alternative text...
2013 Oct 04
2