[R] Is there a plotmath symbol \mapsto?

Hi, Is there a plotmath symbol like LaTeX's \mapsto? I need this comparably often, for example if you want to plot a two-place function in one variable (and thus would like to have ylab="t \mapsto f(t,s)", for example). If there is such a symbol, I'd be great to have it as an example on ?plotmath.

Re: [R] make matrices as many as possible with a constraint

On Dec 11, 2014, at 4:38 PM, Kathryn Lord wrote: > Dear R users, > > I'd like to make 4 by 7 matrices as many as possible with natural numbers 1 > through 28 such that each matrix have different elements of each column. I was tempted to respond: We're very sorry. The Soduko Challenge Contest w

[R] make matrices as many as possible with a constraint

Dear R users, I'd like to make 4 by 7 matrices as many as possible with natural numbers 1 through 28 such that each matrix have different elements of each column. For example, simply here is one > a1 <- matrix(1:28, 4,7) > a1 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,]159 13 17

Re: [R] DIF

Thank you so much Phil, I will try that. Best On Wed, Dec 10, 2014 at 9:42 PM, Phil Chalmers wrote: > As well, the mirt package contains a function for DIF using likelihood > ratio tests via multiple-group estimation methods (the multiple group > estimation generally goes beyond simply testing f

Re: [R] Unmarked

Your query is incoherent, at least to me. If others are similarly flummoxed and you receive no useful reply, read and follow the posting guide (link below) to provide code, data, etc. for a minimal example to explain what you wish to do. In PLAIN TEXT -- no HTML. Cheers, Bert Bert Gunter Genen

[R] Unmarked

I am trying to write a script to run occupancy analysis for very large sets of data for multiple species. I have in the past used PRESENCE but would like to use R. I am having trouble getting the ObsCov into the data frame. I get the following error message: data1=unmarkedFrameOccu(y=y,siteCovs

Re: [R] NA problem in rbind of an apply summary

Thank you Karim, I'll try that. Thanks! Raff Sent from my iPhone > On Dec 10, 2014, at 1:48 PM, "Karim Mezhoud" wrote: > > Hi, > Could you try rbind.na.R function. > karim > > Ô__ > c/ /'_;kmezhoud > (*) \(*) ⴽⴰⵔⵉⵎ ⵎⴻⵣⵀⵓⴷ > http://bioinformatics.tn/ > > > >> On Wed, Dec 10, 2014

Re: [R] Working with data frames

Sun Shine wrote > with(MHP.def, {plot(as.integer(MHP.def$Names),cH.E, axes=FALSE, xlab='Area') axis(side=2) axis(side=1, at=seq_along(levels(MHP.def$Names)), lab=levels(MHP.def$Names))}) Error: unexpected symbol in "with(MHP.def, {plot(as.integer(MHP.def$Names), MHP.def$cH.E, axes=FALSE, xlab='Are

Re: [R] Working with data frames

Ggplot2 also depends on factors, so learn about them asap. It does have some support for automatically converting strings to factors in some cases, but it doesn't always work the way you want it to. --- Jeff Newmiller

Re: [R] Working with data frames

Hello William, Ivan and Jim I appreciate your replies. I did suppress the factors using stringsAsFactors=FALSE and in that way was able to progress some more on getting a sense of the data set, so thanks for that suggestion. I had previously overlooked it. Also thanks William, I never understo

Re: [R] Create previous dates from date with consideration of leap year

Here is an example of converting the 'date' your dataframe to 'time' (POSIXct) and then taking the first 'time' and creating the 5 previous days from that date: id date case 1 1 27apr19931 2 2 13feb20051 3 3 29may20021 4 4 22sep20051 5 5 18dec19911 6 6 07jun

Re: [R] Create previous dates from date with consideration of leap year

The sample data you provided has the variable 'date'. Since the type of this variable is 'factor', you may try to convert type of variable from 'factor' to 'date' as shown in the below: > x$rval <- as.Date(x$date, format="%d%b%Y")-5 > x id date case rval 1 1 27apr19931 1993

[R] Using gregexpr and regmatches but getting Iconv error

Hi I have stumbled upon a problem when using gregexpr and regmatches, with the following error-message: Error in iconv(x, "latin1", "ASCII") : 'x' must be a list of NULL or raw vectors The data: (1) I have two journal articles and after some regex manipulation I am at the following situ

Re: [R] Working with data frames

Here is a reproducible example > d <- read.csv(text="Name,Age\nBob,2\nXavier,25\nAdam,1") > str(d) 'data.frame': 3 obs. of 2 variables: $ Name: Factor w/ 3 levels "Adam","Bob","Xavier": 2 3 1 $ Age : int 2 25 1 Do you get something similar? If not, show us what you have (you could

[R] Create previous dates from date with consideration of leap year

Dear R Community, I wish to create 5 preceding dates from the date variable by ID. How could I create such dates? The code should consider leap year. Thanks Sample data follows: structure(list(id = 1:12, date = structure(c(9L, 6L, 11L, 8L, 7L, 5L, 4L, 3L, 12L, 1L, 10L, 2L), .Label = c("01feb20

Re: [R] Working with data frames

If you are using 'read.csv' (or 'read.table') to input, then use the 'as.is = TRUE' parameter to prevent the conversion to factors of the data. You can also do "as.character(df$col_with_factors)" to get the character values back. Jim Holtman Data Munger Guru What is the problem that you are try

[R] How to pass a nested random effect with frailty in coxph() - survival package?

Hi, I have a very simple Cox regression model in which I need to include a nested random effect: individual nested in treatment. I know how to pass a single random effect - e.g. frailty(id)- but how can I specify the nested random (id nested in treatment) effect using frailty? The equivalent in lme

Re: [R] Working with data frames

Hi Sun, If I understood correctly (a reproducible example would be of great help), it seems you're struggling with factors. Read on this topic to better understand how it works. For your plots, you would need to set the labels with the argument 'xlab' for plot(). To access the names of the f

[R] Working with data frames

Hello I am struggling with data frames and would appreciate some help please. I have a data set of 13 observations and 80 variables. The first column is the names of different political area boundaries (e.g. MHad, LBNW, etc), the first row is a vector of variable names concerning various cens

Re: [R] to calculate c(rep("1", 43), rep("2", 43), ...., rep("10", 43))

Hi Michel, What about rep(1:10, each=43) If you need to have characters, you could do something like: as.character(1:10) HTH, Ivan -- Ivan Calandra, ATER University of Reims Champagne-Ardenne GEGENA² - EA 3795 CREA - 2 esplanade Roland Garros 51100 Reims, France +33(0)3 26 77 36 89 ivan.cala

Re: [R] to calculate c(rep("1", 43), rep("2", 43), ...., rep("10", 43))

Hello, Try the following. unlist(lapply(1:10, function(n) rep(as.character(n), 43))) Hope this helps, Rui Barradas Em 11-12-2014 10:12, Arnaud Michel escreveu: Hello I would like to find an elegant way of calculating c(rep("1", 43), rep("2",43),, rep("10",43)) Any idea ? Thank you __

[R] to calculate c(rep("1", 43), rep("2",43),...., rep("10",43))

Hello I would like to find an elegant way of calculating c(rep("1", 43), rep("2",43),, rep("10",43)) Any idea ? Thank you -- Michel ARNAUD DGDRD-Drh - TA 174/04 tel : 04.67.61.75.38 port: 06.47.43.55.31 __ R-help@r-project.org mailing list -- To U

Re: [R] AR(1) with an error term arima.sim parameter question

Thanks for all the help! Ill give them a shot and compare the results. On Thu, Dec 11, 2014 at 12:29 AM, Rolf Turner wrote: > On 11/12/14 20:09, Michael Selevan wrote: > >> This makes sense, thank you for the thorough response! >> >> One follow up question though. Would your #2 option be the sam

Re: [R] AR(1) with an error term arima.sim parameter question

On 11/12/14 20:09, Michael Selevan wrote: This makes sense, thank you for the thorough response! One follow up question though. Would your #2 option be the same as, say, not using the rand.gen at all and providing the following parameters instead? y3 <- arima.sim(n=10, list(ar=0.8), innov=rnorm