similar to: question about rSymPy and integration

Dear R People: I have been experimenting with rPython, rSymPy, and rJython. Here is my latest snag: > library(rJython) Loading required package: rJava Loading required package: rjson > library(rSymPy) > rJython <- rJython() > x <- "x" > y <- "y" > rJython$exec("from sympy import *") Error in .jcall("RJavaTools",

Everything is ok on Firefox, IE, and iPad. Thanks, Erin On Tue, Jan 8, 2013 at 7:58 PM, Erin Hodgess <erinm.hodgess at gmail.com> wrote: > Dear R People: > > Has anyone used R2HTML in web files that were on the Blackboard LMS, please? > > I'm starting to do these but wanted to know if there were any > potential pitfalls. > > Thanks, > Erin > > > --

Thank you! On Thu, Aug 17, 2017 at 4:55 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote: > r-package-devel is probably a better place to post this, especially if > you do not get a satisfactory reply here. This list is about R > programming, as you presumably know; your query is not. > > Cheers, > Bert > > > Bert Gunter > > "The trouble with having

Hello yet again, R People: I was working with Ryacas and yacas last night and all was well. Now this morning, I keep getting the following: > a <- Sym("a") > a Error in summary.connection(x) : invalid connection > When I go to yacas from the command line, it works fine. Any suggestions, please? I'm thinking that a port might be open, but here I have: >

Here is my solution: tapply(zzz$DEATH1,zzz$GENDER,sum, na.rm=TRUE) Dear R People: Here is a little section of a data frame: > zzz[1:10,] DATE GENDER AGE Co DEATH1 3945 2009-04-16 M 24 Botulinic 23 3851 2009-04-16 M 35 Constitutional 23 8495 2009-04-16 F 49 Constitutional 27 10967 2009-04-16 F 47 Constitutional

r-package-devel is probably a better place to post this, especially if you do not get a satisfactory reply here. This list is about R programming, as you presumably know; your query is not. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic

Hi, If you are using roxygen-style function documentation then why not use devtools::document()? Ben > On Dec 16, 2017, at 9:00 AM, Erin Hodgess <erinm.hodgess at gmail.com> wrote: > > Hello everyone! > > I'm in the process of writing a package, and I'm using the lovely "R > Package" book as a guideline. > > However, in the midst of my

Dear R People: Is there a way to find which objects are functions via ls(), please? I'm sure that there is, but I'm not sure how. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: I have a question, please: I want to install a package from R CMD INSTALL and I have a boatload of configure args. I want to put them into a file. How do I point the R CMD INSTALL to that file, please? Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: Is it possible to run R on an iPad, please? For some reason, I'm thinking that you can't have Fortran, C, etc., so you can't do it. But I thought I would check anyway. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: Suppose I have the following: "pi/2" and I would like it to be 1.57..... Using as.numeric, here is my result: > as.numeric("pi/2") [1] NA Warning message: NAs introduced by coercion > Is there a way to produce the numeric result, please? Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of

[Please send replies to r-help, not individual responders] Emre, In R, when you call a function defined via something like f <- function( foo, bar ) then you can call it as, for, example a <- f(x,y) or a <- f(foo=x, bar=y) or even a <- f( bar=y, foo=x) # notice I switched the order! The first approach requires you to pass the arguments in the same order as the function is

Dear R People: I have the following equation: $1 - \frac{R}{100} = \frac{2y}{10000}$ and I was wondering if there was a way in R to solve for R (no pun intended). I'm experimenting with Ryacas, but nothing yet. Version R-3.0.1 on Windows 7. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto:

Dear R People: Is there a function to convert a character string to all uppercase or all lowercase please? I'm sure that I've used one before but I'm drawing a blank. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R People: Is there a way to "guarantee" that breaks=n will give you exactly n breaks, please? I'm fairly certain that the answer is "no", but thought I'd check. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Dear R Gurus: What is the name of the person who has all of the Tcl/tk stuff, please? I know it's James W, but can't remember his last name. I wanted to look at some of his examples. Thanks in advance! Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Hello I would like to build R from source and use the PGI compiler, rather than the GCC compiler. I saw the instructions for the Intel compiler in the R Installation Manual, but I didn't see the PGI. I tried a few times without instructions, but without success. Any suggestions would be most welcome. Also, I hope this is the right group for the question. Sincerely, Erin -- Erin

Dear R People: I have a barplot created from a table. What is the best way to set up the barplot such that is shows probability rather totals, please? I've tried plot also but it shows horizontal bars rather than vertical bars. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at

Dear R People: I'm using the locator() function on a chart and I select two values. Is there a way already in place to connect the two values with a line segment, please? Just thought I'd check before I started coding. Thanks in advance, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto:

Dear R Debian Users: I wrote a quick C program (eventually to become R code) and compiled it as: mpicc -o greet greet.c So far so good. Now when I run mpirun, this happens: erin at erin-laptop:~$ mpirun -np 2 greet ----------------------------------------------------------------------------- It seems that there is no lamd running on the host erin-laptop. This indicates that the LAM/MPI