similar to: 2D look up (within interval)

Displaying 20 results from an estimated 900 matches similar to: "2D look up (within interval)"

2009 Jan 09
3
create sequences from two "from" and "to" vectors
hi all, how can I create sequences that start from a known vector, say x1 and end with another say x2- also suppose all the sequences will be the same length. I don't want to use a for loop x1<-c(1,2,3,4); x2<-(3,4,5,6); what I want is 1 2 3 4 2 3 4 5 3 4 5 6 Thanks ----- Yasir H. Kaheil Columbia University -- View this message in context:
2008 Aug 11
2
generating a random signal with a known correlation
Hi, How can I generate a random signal that's correlated with a given signal at a given correlation (say 0.7)? I've been looking at rmvnorm etc but don't seem to figure it out. Thanks ----- Yasir H. Kaheil Columbia University -- View this message in context: http://www.nabble.com/generating-a-random-signal-with-a-known-correlation-tp18932541p18932541.html Sent from the R help
2012 Jul 12
6
read.table with numeric row names
I have a text file like this 2.5 3.6 7.1 7.9 100 3 4 2 3 200 3.1 4 3 3 300 2.2 3.3 2 4 I used "r <- read.table("a.txt", header=T)" The row names becomes X2.5, X3.6... What I need is the row names are numeric, so I can use the row names as numbers on x-axis for plotting. e.g. "plot(colMeans(r)~names(r))",
2011 Mar 07
4
png inside loop
hello list! I'm sorry, I just stumbled over this strange behaviour (at least I am not able to explain the behaviour, therefore I assume it to be a strange behaviour): attach(water) # I know, this is not recommended names(water[3:10]) [1] "temp" "pH" "DO" "BOD" "COD" "no3" "no2" "po4" for (i in
2009 Jan 26
0
Spectral analysis with mtm-svd Multi-Taper Method Combined with Singular Value Decomposition
Hi list, Does anyone know if there is a library in R that does MTM-SVD method for spectral analysis? Thanks ----- Yasir H. Kaheil Columbia University -- View this message in context: http://www.nabble.com/Spectral-analysis-with-mtm-svd-Multi-Taper-Method-Combined-with-Singular-Value-Decomposition-tp21671934p21671934.html Sent from the R help mailing list archive at Nabble.com.
2008 May 05
2
bwplot
Hi, I have 2 questions about bwplot in R : 1) How to change the order of my different boxes in the graph ? 2) How to rename the names of the differents boxes ? because I know how to do that with boxplot (using names) but I do not find the equivalent parameter in bwplot. thanks, C?dric
2008 May 08
1
miniscule font size on R console output
Hi, I am having a situation where I cannot change the output size of the R console. I have played around with the font format menu but the changes are only reflected to the script that I type in but not to the output. Everytime I run a script, I have to go back to font format to increase the output script, which is currently showing up as small as the dust on my computer screen. I have mac by
2008 May 16
2
How to extract estimates, Std. Error, t Value and Pr(>|t|) from summary
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2008 May 23
1
Question about Runuran (Triangular Distribution)
The Runuran package includes a simulation for the Triangular Distribution, urtriang. But I didn't find an analogue of the q* functions (rnorm - qnorm, runif - qunif), that would invert the CDF (?uqtriang). Are there any such functions? Alberto Monteiro
2008 May 24
1
R-Excel Macro Problem
I'm trying to write R functions into VBA code. I've done this many other times in other documents and everything has run great. But today I keep recieving an error message "Run-time error '1004': Application-defined or object-defined error." Has anyone else encountered this same error message? I do not recieve this error in the document when running regular VBA code.
2008 May 23
1
SVD on a matix
Hi All, I performed an svd on a matrix X and saved the first three column of the left singular matrix U. ( I assume that they correspond to the projection of the matrix on the first three eigen vectors that corresponds to the first three largest eigenvalues). I would like to know how much variance is explained by the first eigenvectors? how can I find that. Thanks for your help -- View this
2012 Jul 10
1
info about R arulesSequences
Hi all, I'm new with R, recently I began to use the package "arulesSequences" but the algorithm cspade give me this error: Error en makebin(data, file) : 'sid' invalid when I did executed this script, x = read_baskets("transactions.basket",sep=",",info=c( "eventID", "sequenceID","SIZE")) s <- cspade(x, parameter =
2012 Jul 11
2
replacing NaN for every attribute in my data
Hi, I have a list called ds which has the following attributes: attributes(ds) $names [1] "adj.r.squared" "fstatistic" "intercept" "slope" [5] "std.error" "tstatistic" I want to replace all the NaN is ds with 0, and after searching past posts I found I can hardcode it like this:
2012 Jul 19
2
change file name from file0.1_data.RData to file1_data.Rdata
Dear All, I want to change file names. I have file0.1_data.RData (I have several files whose names are file0.x_data.Rdata) I want to rename it to file1_data.RData How can I do it? Thank you for saving my time! [[alternative HTML version deleted]]
2008 May 11
1
Creating data.frames dynamically
I have time series data in named vectors. They are all the same length for the same dates. The dates are in a separate vector. I want to create a vector of numeric data for every named series, associated with the dates in a data.frame. So if... Names <- c("a", "b", "c") d <- data.frame(dates=Dates, a=vector(mode="numeric", length=length(Dates),
2008 May 16
1
Lattice box percentile plot
Dear Nabble. I am trying to draw a box percentile plot with trellis using the panel in Hmisc. I really want to colour the plots in. I can alter several of features of the plot by changing the trellis par settings but I just can’t fill the shape in. Here is some example code which alters line colour and dot symbol: require(lattice) require(Hmisc)
2008 Apr 25
2
Ubuntu vs Mac OS X
Hi ! I have installed R-2.7.0 64-bits on a computer where the new Ubuntu version (8.04) was installed. This computer is a 3.2 GHz Dual-core with 2 Gb of RAM. To test how fast (I though !) this machine is, I compared two simple matrix manipulations between Ubuntu and my laptop (a MacBook Pro 2.2 GHz with also 2 Gb of RAM under Mac OS X 10.5.2). By the way, I install the normal version of R
2008 Jul 14
2
Insurance review statistical methods
Hi R users: I will like to know if somebody works on insurance statistics (actuarial problems) and had use TRICAST, and can tell me if with all the R tools it can be build a solution like TRICAST or similar. In a word: Do you think that R has all the statistical tools (I mean modeling tools) to make a job similar to TRICAST? Does TRICAST has modeling tools that are not implemented on R yet?
2008 May 07
2
pivoting - summing up factors
Hi I would like to know how to pivot a table that will sum the number of plants (a or b) for each location (x,y,z) I have read on the listserve similar questions but which involve summing up numbers rather than factors. I have also read about the R package reshape on the listserve but wanted to know if there's a way to do it easily without the package Thanks for the help! location plant x
2008 May 05
2
axis and tick widths decoupled (especially in rugs!)
Hi! (a complete newby, but will not give up easily!) I was wondering if there is any way to decouple the axis and tick mark widths? As I understand they are both controlled by the lwd setting, and cannot be controlled independently? For example I might want to create major and minor ticks, which I now know how to do by superimposing two axes with different at settings, but what if I also wanted