search for: openmath

...uter algebra system. It can be used for computer algebra, exact arithmetic, ASCII pretty printing and R to TeX output. R, yacas and Ryacas are all free software packages distributed under the GPL version 2. Ryacas is written in R. It uses a recursive decent R-to-yacas translator and an XML-based OpenMath yacas-to-R translator. yacas is run as a second process to which R communicates via a socket interface. There are 8 different user level interfaces (yacas.character, yacas.expression, yacas.function, yacas.formula, Sym objects, Expr objects, yacmode and runYacas). Most users will primarily use Sy...

...uter algebra system. It can be used for computer algebra, exact arithmetic, ASCII pretty printing and R to TeX output. R, yacas and Ryacas are all free software packages distributed under the GPL version 2. Ryacas is written in R. It uses a recursive decent R-to-yacas translator and an XML-based OpenMath yacas-to-R translator. yacas is run as a second process to which R communicates via a socket interface. There are 8 different user level interfaces (yacas.character, yacas.expression, yacas.function, yacas.formula, Sym objects, Expr objects, yacmode and runYacas). Most users will primarily use Sy...

Hi, Is there any parser generator like www.antlr.org? Moreover, how does simple code assistance work currently in R? By 'simple code assistance' I meant things like: Object$M<TAB> --> Object$Method

Dear R-Help, I am working on a paper in an R course for large file support in R using scan(), relational databases, and XML. I have never used SQL or heirarchical document formats such as XML (except where it occurs without user interaction), and knowledge in RDBs and XML is lacking in my program. I have tried finding a working example for the novices-novice on the topic, read many postings, the