{"Package":"caracas","Version":"2.0.0","Title":"Computer Algebra","Authors@R":"c(\nperson(given = \"Mikkel Meyer\", family = \"Andersen\",\nemail = \"mikl@math.aau.dk\", role = c(\"aut\", \"cre\", \"cph\")),\nperson(given = \"Søren\", family = \"Højsgaard\",\nemail = \"sorenh@math.aau.dk\", role = c(\"aut\", \"cph\"))\n)","Maintainer":"Mikkel Meyer Andersen ","Encoding":"UTF-8","Description":"Computer algebra via the 'SymPy' library ().\nThis makes it possible to solve equations symbolically,\nfind symbolic integrals, symbolic sums and other important quantities.","Depends":"R (>= 3.0), methods","Imports":"reticulate (>= 1.14), Matrix, doBy (>= 4.6.15), magrittr","Suggests":"Ryacas, testthat (>= 2.1.0), knitr, rmarkdown, tinytex,\nmagick, pdftools, qpdf","License":"GPL","SystemRequirements":"Python (>= 3.6.0)","URL":"https://github.com/r-cas/caracas","BugReports":"https://github.com/r-cas/caracas/issues","RoxygenNote":"7.2.3","VignetteBuilder":"knitr","NeedsCompilation":"no","Packaged":"2023-01-31 15:34:46 UTC; mikl","Author":"Mikkel Meyer Andersen [aut, cre, cph],\nSøren Højsgaard [aut, cph]","Repository":"CRAN","Date/Publication":"2023-01-31 16:10:02 UTC","repoType":"cran","tarballUrl":"ftp://cran.r-project.org/pub/R/src/contrib/caracas_2.0.0.tar.gz","jsonAuthors":[{"name":"Mikkel Meyer Andersen","email":"mikl@math.aau.dk","maintainer":true},{"name":"Søren Højsgaard","email":"sorenh@math.aau.dk","maintainer":false}],"readme":"\n\n\n# `caracas`: Computer algebra in R\n\n\n\n[![R build\nstatus](https://github.com/r-cas/caracas/workflows/R-CMD-check/badge.svg)](https://github.com/r-cas/caracas/actions)\n[![codecov.io](https://codecov.io/gh/r-cas/caracas/branch/master/graphs/badge.svg)](https://app.codecov.io/gh/r-cas/caracas?branch=master)\n\n\n## Installation\n\n`caracas` is available on CRAN and can be installed as usual:\n\n install.packages('caracas')\n\nPlease ensure that you have SymPy installed, or else install it:\n\n``` r\nif (!caracas::has_sympy()) {\n caracas::install_sympy() \n}\n```\n\nTo build and install from Github with vignettes run this command from\nwithin `R` (please install `remotes` first if not already installed):\n\n # install.packages('remotes')\n remotes::install_github(\"r-cas/caracas\", build_vignettes = TRUE)\n\nYou can also install the package without vignettes if needed as follows:\n\n remotes::install_github(\"r-cas/caracas\")\n\n## Configuring the Python environment\n\nThe `caracas` package uses the\n[`reticulate`](https://github.com/rstudio/reticulate) package (to run\nPython code). Thus, if you wish to configure your Python environment,\nyou need to 1) load `reticulate`, 2) configure the Python environment,\nand 3) load `caracas`. The Python environment can be configured as\ndescribed\n[here](https://rstudio.github.io/reticulate/articles/versions.html).\nAgain, this need to be done *before* loading `caracas`.\n\n## Development site\n\nSee .\n\n## Online documentation\n\nSee .\n\n## Origin of name\n\nThe name “caracas” is intended to mean “(inter)face to computer algebra\nsystem(s)” - notice that “cara” is Spanish (Castellano to be precise)\nfor “face”.\n\n## Code of conduct\n\nPlease note that the `caracas` project is released with a Contributor\nCode of Conduct (available in `CODE_OF_CONDUCT.md`). By contributing to\nthis project, you agree to abide by its terms.\n\n## Brief introduction\n\n``` r\nlibrary(caracas)\n# options(caracas.print.prettyascii = TRUE)\n```\n\n``` r\nx <- symbol('x')\neq <- 2*x^2 - x\neq\n#> [caracas]: 2 \n#> 2⋅x - x\nas.character(eq)\n#> [1] \"2*x^2 - x\"\nas_expr(eq)\n#> expression(2 * x^2 - x)\ntex(eq)\n#> [1] \"2 x^{2} - x\"\n```\n\n``` r\nsolve_sys(eq, x)\n#> Solution 1:\n#> x = 0 \n#> Solution 2:\n#> x = 1/2\nder(eq, x)\n#> [caracas]: 4⋅x - 1\nsubs(eq, x, \"y\")\n#> [caracas]: 2 \n#> 2⋅y - y\n```\n\n``` r\nA <- matrix(c(\"x\", 2, 0, \"2*x\"), 2, 2)\nB <- as_sym(A)\nB\n#> [caracas]: ⎡x 0 ⎤\n#> ⎢ ⎥\n#> ⎣2 2⋅x⎦\nBinv <- inv(B)\nBinv\n#> [caracas]: ⎡ 1 ⎤\n#> ⎢ ─ 0 ⎥\n#> ⎢ x ⎥\n#> ⎢ ⎥\n#> ⎢-1 1 ⎥\n#> ⎢─── ───⎥\n#> ⎢ 2 2⋅x⎥\n#> ⎣ x ⎦\ntex(Binv)\n#> [1] \"\\\\left[\\\\begin{matrix}\\\\frac{1}{x} & 0\\\\\\\\- \\\\frac{1}{x^{2}} & \\\\frac{1}{2 x}\\\\end{matrix}\\\\right]\"\n```\n\n``` r\neigenval(Binv)\n#> [[1]]\n#> [[1]]$eigval\n#> [caracas]: 1\n#> ─\n#> x\n#> \n#> [[1]]$eigmult\n#> [1] 1\n#> \n#> \n#> [[2]]\n#> [[2]]$eigval\n#> [caracas]: 1 \n#> ───\n#> 2⋅x\n#> \n#> [[2]]$eigmult\n#> [1] 1\n```\n\nPlease find more examples in the other vignettes available at\n.\n\n## Contribute, issues, and support\n\nPlease use the issue tracker at\n if you want to notify us of an\nissue or need support. If you want to contribute, please either create\nan issue or make a pull request.","jobInfo":{"package":"caracas","version":"2.0.0","parsingStatus":"success","parserVersion":2,"parsedAt":"2023-08-11T15:29:58+0000"}}

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Examples