search for: faisnel

Hi all, Using R a as a real-time application called by Php for a website, I would like to run one R process only, which would manage user connections. For the time each user who asks for an analysis causes a new R process to start, which is not suitable in prevision of many users. R needs about 30 seconds to run the script which makes the analysis. The problem is that this waiting time is n

Hi all, I just upgraded to R-1.8.0. Everything worked fine but command line editing does not work. This clearly indicates that readline has not been found in the compilation process. How could I explicitely indicate where to find it ? I use a Red Hat 8.0 system. I checked the FAQ which says readline-devel is also needed, but I have it already installed. Perhaps should I add the configure

Hi all, I'm using the latest RMySQL to send requests to a MySQL database (which is quite small for the time - let's say 20 tables with a total of 1000 rows), and this should be part of a whole decisionnal system. It produces results which are displayed on a website, and therefore I need fast results (the database being quite small, I think this must be possible !). Unfortunately, a

Hi all, I have to call R from PHP code. I manage to run R and to make it parse my script (see below) but I have an error which I cannot cope with yet while running the PHP page: Error in file("/home/faisnel/Rscripts/testphp2.Rout", open = "wt") : unable to open connection In addition: Warning message: cannot open file `/home/faisnel/Rscripts/testphp2.Rout' Execution halted I am not sure about the "open" option I used (see R script). Does anyone have an idea about why t...

...unspecified directories for PostgreSql , so I used the option --configure-args to specify where are the PostgreSql libraries and headers. * The installation then seemed to be a success : ------------------------------------------------------------------------ R CMD INSTALL /home/faisnel/PostGresSql/RPgSQL_1.0-0.tar.gz --configure-args='--with-pgsql-libraries=/usr/local/pgsql/lib --with-pgsql-includes=/usr/local/pgsql/include' * Installing *source* package 'RPgSQL' ... creating cache ./config.cache checking for crypt in -lcrypt... yes checking how to run the C pre...

Hi helpers, I've been programming in R for a few months now but I still have doubts about my code - I would like it to be completely S4-compatible. The current code works fine but is probably 'unclean'. I read the interesting article in the last R News and it helped me understand the difference on the whole between S3 and S4 classes, but I need a practical example. Could anyone

>> Can some kind soul please give me a fool proof recipe for building R >> and RSPython so that it actually works? > I don't have a recipe, but one thought to help debug the process: Try > installing RPy [1]. RPy also provides access to R via Python and uses > the libR.so library. If you can install and "import rpy" without > problem then it must be

Hi, I've got a problem which seemed simple to me at first view, but which I haven't managed to solve yet. I have a dataframe, or a matrix, and I would like to order it along with one of the variables/columns. I tried to use order() but it remained quite unclear to me. How should I proceed ? Thanks in advance (I guess that's not very difficult a question for most of you) Laurent

Hi, I'm trying to compile R-1.7.1 from source (on a RedHat 8.0) instead of using the binary version, as it has often been advised. However I don't manage to find a solution to the following error which occurs during the make procedure : /!\-------------------------------------------/!\ building package 'ctest' mkdir -p -- ../../../library/ctest/R mkdir -p --

Hi all, Trying to install R-1.7.1 on a RedHat 8.0 platform, I have a few problems. R gets installed without default packages (but base and ctest) : make script fails at the end of the procedure (configure is made successfully). This is the (translated) log I have : /gcc -I../../../../include /usr/include/mysql -D__NO_MATH_INLINES -mieee-fp -fPIC -g -O2 -c ansari.c -o ansari.o gcc: cannot

...that the internal representation of objects in the methods package changed in 1.8.0, and thus packages that use S4 classes and methods and save their images (like RMySQL) and were installed prior to 1.8.0 need to be re-installed to be used with newer R versions. Hope this helps, -- David Laurent Faisnel wrote: > Hi David, > > I have problems with RMySQL since I have upgraded to R-1.8.0 (now I have > R-1.8.1). I have been using this package for quite a long time (don't > konw if you remember, you helped me out with a function lean.exec which > runs queries much faster than...

Hi dear helpers, I have been using for quite a long time a script where a class extends another one (without trouble). But I now have problems of that kind while trying to run the script : Error in insertMethod(methods, sig, args, def, TRUE) : inserting method corresponding to empty signature I think this may be because the way I wrote the scripts could be deprecated. Indeed I

Hi all, I have been using for quite a long time a script where a class extends another one (without trouble). But I now have problems of that kind while trying to run the script : Error in insertMethod(methods, sig, args, def, TRUE) : inserting method corresponding to empty signature I think this may be because the way I wrote the scripts could be deprecated. Indeed I recently