[R] Embed fonts in an R graph

Hello all, I cannot embed a common font type into an R graph. I did it successfully in December 2014 with the previous R version. However, with R 3.2.1 in July 2015, the following sample codes do not work anymore. pdf(file = "c:/testA.pdf", family = "serif") plot(x = 1:10, y = rnorm(10)) dev.off(

[R] undefined S4 class in parallel computing at snowfall

Dear All, I have a question of how to export S4 class specification to clusters/workers in parallel computing. The package I used is snowfall. The problem is reproducible as follows. Any hint is greatly appreciated. Edwin Sun === begin === library(snowfall) sfInit(parallel = TRUE, cpus

Re: [R] strange problem with strptime and date variable

David - Thanks very much. That is a great hint. I believe that is the solution. Edwin Sun -- View this message in context: http://r.789695.n4.nabble.com/strange-problem-with-strptime-and-date-variable-tp3677178p3677205.html Sent from the R help mailing list archive at Nabble.com

[R] strange problem with strptime and date variable

Hello all, I am manipulating a large database with 70,000 records. "strptime" generates a date variable but R treats some of the values as NA. I attach a simple example below. I have spent hours on this problem. Any hint would be greatly appreciated. Many thanks, Edwin Sun # =

[R] Piecewise distribution function estimation with Generalized Pareto for tail

Thank you, Edwin Sun -- View this message in context: http://r.789695.n4.nabble.com/Piecewise-distribution-function-estimation-with-Generalized-Pareto-for-tail-tp3649961p3649961.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-p

Re: [R] how to update my own function

Thank you all the reply. The use of sys.call() as suggested by Ducan works pretty well. This is good as the outputs from my function are large. The use of apply family functions as suggested by Erik is good for small amounts of outputs. Edwin Sun -- View this message in context: http://r

[R] how to update my own function

Hello all, I wrote a function with many arguments. Then I need to call it many times with changes on some arguments only. Is there any way to write a function or have a method to "update" it, like the relationship between lm() and update()? Many thanks, Edwin Sun T

Re: [R] dnorm and qnorm

Thank you all for the great help. I think the optimize function and approach solves my problem well. Edwin Sun -- View this message in context: http://r.789695.n4.nabble.com/dnorm-and-qnorm-tp3040427p3041962.html Sent from the R help mailing list archive at Nabble.com

[R] dnorm and qnorm

Hello all, I have a question about basic statistics. Given a PDF value of 0.328161, how can I find out the value of -0.625 in R? It is like reversing the dnorm function but I do not know how to do it in R. > pdf.xb <- dnorm(-0.625) > pdf.xb [1] 0.328161 > qnorm(pdf.xb) [1] -0.444997 > pno

Re: [R] ggplot2: How to change font of labels in geom_text

I have the same problem and I wonder if there is any answer from the community. Thanks. -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-How-to-change-font-of-labels-in-geom-text-tp991579p2286671.html Sent from the R help mailing list archive at Nabble.com. ___

Re: [R] GARCH estimation with exogenous variables in the mean equation

Hello, I have the similar issue in estimating a GARCH model with exogenous variables in the mean equation. Currently, to my understanding, the garch function in tseries package can handle univariate model, and garchFit in fGarch can handle ARMA specification. I wonder if there is any R function

[R] navigation panel with help

notice there is an index link at the bottom of the page. By the way, I did not make any change on my browser. Is this a change for this version? Thank you for your help. Edwin Sun -- View this message in context: http://n4.nabble.com/navigation-panel-with-help-tp1395663p1395663.html Sent from the R

Re: [R] ggplot legend for multiple time series

Hello - Thank you so much for the help. It works perfectly. I guess that as many have pointed out, ggplot is a great package but there is a lack of documentation and examples. Edwin Sun baptiste auguie-5 wrote: > > Hi, > > I don't understand why you used scale_manual_colour

[R] ggplot legend for multiple time series

Hello All, I am trying to create a legend for a black-white graph. The package I use is ggplot2. It can add colors to the legend key but not line types. Can you please help? # example from Wickman (2009, ggplot2 – elegant graphics for data analysis, page 109) library(ggplot2) huron <- data.fram