#rim 0.6.0 ## Minor - added new function maxima.eval() that can either take a character string or an S3 object of class “maxima” (as returned from maxima.get()). In either case, the output result from Maxima (if not suppressed) is parsed into a R-expression and gets evaluated by this function. Objects returned from maxima.get() carry an attributed named “parsed” that is the unevaluted R-expression of the returned Maxima result. Parsing works for - unary and binary operators - named function calls - function definitions - lambda function calls - memoizing array function definition (those are currently simply parsed into “normal” functions) - arrays: creating and setting - matrices: creation, multiplication, transposition, inversion, determinants - lists - conditionals - added engine option output.var that can name a variable to capture parsed Maxima output into a named list. The names of this list are the output labels.

rim 0.5.3

Modification

• user can specify custom path to Maxima executable by setting environment variable “RIM_MAXIMA_PATH”

rim 0.5.2

Modification

• fixed tests to pass for Fedora 36
• built-in safeguards against infinite loops when Maxima couldn’t be started or initialized (issue #29)
• reading process ID and version number now using class MReader

rim 0.5.1

Modification

• knitr-engine now supports chunk options echo, eval and include, a description can be found in the documentation page
• fixed several issues related to changes with Maxima version 5.46.0

rim 0.5.0

Minor

• knitr-engine now supports plotting commands: plot2d(), plot3d(), draw(), draw2d(), draw3d() (and others that are based on those mentioned), depending on the output format (PDF or HTML), plots are saved as PDF or PNG respectively
• Added inline output function to be used when knitting RMarkdown documents.
• Restructured the return type of the get function: Instead of a character string, now a list is returned storing every output format of the result including both with and without reference labels.
• Added a global option handling function maxima.options() and removed individual option setting functions maxima.setformat(), maxima.engine.format() and friends
• Whether reference labels are printed or not when knitting a RMarkdown document can now be controlled by setting maxima.options(engine.label)

Modification

• Removed some unused utility functions from code
• Removed unnecessary C++17 compiler flag
• Improved documentation
• Updated heuristics for catching warnings and errors
• Improved typesetting of output labels when knitting RMarkdown documents
• Improved warning/ error handling heuristics (fixing issue #20)

rim 0.4.1

Modification

• fixed issue #16. code chunks that contain commands spanning multiple lines are now printed as-is (except for empty lines, which are removed) with the preceding input reference label
• fixed the issue #17, caused by a socket-read-write-concurrency conflict which led to split lines read from Maxima and a failure to validate it’s output. This is achieved now by an internal helper R6 class MReader that stashes away incomplete lines and completes it upon re-calling.
• fixed reference manual that is generated by CRAN, but previously did not contain the package main functions
• Improved description in DESCRIPTION of SystemRequirements
• added exported function maxima.isInstalled() that is now used upon package attachment, where a message is signaled to install Maxima, if no installation was found.
• added exported function maxima.version() which is now used upon package attachment, where a message is signaled when the installed version is lower than the version with which this package has been tested
• Test file tests/testthat/test-engine.R: knitting test page now suppresses Warnings, which are subject of tests/testthat/test-warnings.R

rmaxima 0.4.0/ rim 0.4.0

• added maxima.engine.format() function that can be used to change the output format of the knitr engine
• fixed issue that arises when Maxima takes longer to start (which previously caused the interface to freeze)
• added functions to record the version number of Maxima that is being used
• renamed package to “rim” to avoid confusion with maxima’s rmaxima
• communication is now implemented using sockets and the processing is handles by two nested R6 classes
• return type is now a S3 class of type maxima. There are two methods iprint() and oprint() for printing an maxima S3 object: printing the input command and output respectively, including reference labels.
• removed external C++ library dependencies (now using sockets for communicating with Maxima)
• knitr engine now prints output after each input line, it also prints the input reference label in front of the command

rmaxima 0.0.0.9000

• removed dependency from boost (switched to libexecstream)
• maxima.get() returns character vector with added attributes for reference labels, format and it’s originating command
• fixed Maxima error (message) forwarding to R
• implement knitr-engine for maxima using this interface
• Implement stop function to end maxima child process for debugging purposes
• Handles asksign and similar feedback interruptions
• Added interface to Maxima’s apropos()-function
• Fixed: If command terminates with \$ then this causes a segmentation fault, which kills the R process. The cause being that maxima returns immediately with the next input prompt
• added roxygen2 documentation
• fixed system.file call inside constructor to work with devtools::load_all()
• Added a NEWS.md file to track changes to the package.
• Add test files
• implemented output display as tex (not yet user-friendly)
• added initialization files
• added function void loadModule(const std::string &s)
• Removed boost::regex linking dependency
• fixed pipe stream synchronization