Ryacas
Ryacas: A computer algebra system in R - Published in JOSS (2019)
Science Score: 36.0%
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○CITATION.cff file
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✓.zenodo.json file
Found .zenodo.json file -
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Links to: joss.theoj.org, zenodo.org -
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○Scientific vocabulary similarity
Low similarity (18.7%) to scientific vocabulary
Scientific Fields
Sociology
Social Sciences -
87% confidence
Last synced: 4 months ago
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Repository
Ryacas: R Interface to the Yacas Computer Algebra System
Basic Info
Statistics
- Stars: 42
- Watchers: 9
- Forks: 8
- Open Issues: 16
- Releases: 10
Created over 10 years ago
· Last pushed over 2 years ago
Metadata Files
Readme
License
README.Rmd
---
output: github_document
---
```{r, echo = FALSE}
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>",
message = FALSE
)
```
```{r, echo = FALSE}
library(Ryacas)
```
# Ryacas #
[](https://travis-ci.org/r-cas/ryacas)
[](https://ci.appveyor.com/project/r-cas/ryacas/branch/master)
[](https://joss.theoj.org/papers/69b3947f8900504a25aa36f65d14500b)
[](https://zenodo.org/badge/latestdoi/36067045)
Ryacas is an [R](https://www.r-project.org/) interface to
the free [yacas](http://www.yacas.org) Computer Algebra
System. Ryacas allows one to send unprocessed yacas strings and
certain other R objects to
yacas process from R and get back the result. It also has
facilities for manipulating yacas strings and R expressions
destined for yacas processing.
It can be used for arbitrary-precision arithmetic, symbolic math, ASCII
pretty printing and translating R to TeX.
## Install from GitHub ##
To build and install from Github using R 3.3.0 (or later) and the R `devtools` package 1.11.0 (or later) run this command from within `R`:
```
devtools::install_github("r-cas/ryacas",
build_opts = c("--no-resave-data", "--no-manual"))
```
You can also install the package without vignettes if needed as follows:
```
devtools::install_github("r-cas/ryacas")
```
## Online info ##
For vignettes, overview, pointers to additional information, installation
instructions and a sample session see
if you want to notify us of an issue or need support.
If you want to contribute, please either create an issue or make a pull request.
## Brief examples ##
Below we show a few examples.
We highly recommend reading the "[Getting started](http://r-cas.github.io/ryacas/articles/getting-started.html)" vignette (and the other vignettes) for a more thorough introduction to the package.
There are two interfaces: a high-level interface that
makes `yacas` objects work similar to `R` objects,
and a low-level interface where the user can write `yacas` code
and get results as strings or as `R` expressions. Below, we demonstrate both.
### High-level interface
A brief example with a polynomial is:
```{r}
x <- ysym("x")
p <- x^2+x-6
p
y_fn(p, "Factor")
p %>% y_fn("Factor")
p %>% as_r()
```
A small matrix example follows:
```{r}
A <- outer(0:3, 1:4, "-") + diag(2:5)
a <- 1:4
B <- ysym(A)
B
solve(B)
B[2, 3] <- "x"
B
b <- ysym(a)
b[1] <- "x"
b
B %*% b
t(B)
B[, 2:3]
```
### Low-level interface
Returning strings with `yac_str()`:
```{r}
yac_str("x+x+x+x")
yac_str("Factor(x^2+x-6)")
yac_str("D(x) x^2+x-6")
```
Returning `R` expressions with `yac_expr()`:
```{r}
yac_expr("x+x+x+x")
eval(yac_expr("x+x+x+x"), list(x = 4))
yac_expr("Factor(x^2+x-6)")
yac_expr("D(x) x^2+x-6")
```
Using functions easier (using [`magrittr`](https://cran.r-project.org/package=magrittr)'s pipe, `%>%`):
```{r}
"x^2+x-6" %>% y_fn("Factor") %>% yac_str()
"x^2+x-6" %>% y_fn("D(x)") %>% yac_expr()
```
Solving equations (removes the `x==` from `yacas` with the `y_rmvars()` function):
```{r}
sol <- yac_str("Solve(x^2+x-6 == 0, x)")
sol
sol %>% y_rmvars() %>% yac_str()
sol %>% y_rmvars() %>% yac_expr()
sol %>% y_rmvars() %>% yac_expr() %>% eval()
```
And output in TeX:
```{r}
"3/4 + Pi/8" %>% y_fn("Simplify") %>% y_fn("TeXForm") %>% yac_str()
```
And arbitrary precision (see also the "[Arbitrary-precision arithmetic
](http://r-cas.github.io/ryacas/articles/arbitrary-precision.html)" vignette):
```{r}
yac_str("N(Pi, 50)")
```
## Yacas ##
The package contains the yacas distribution. The development of the yacas source code is available at
Owner
- Name: Computer algebra systems in R
- Login: r-cas
- Kind: organization
- Repositories: 4
- Profile: https://github.com/r-cas
GitHub Events
Total
- Issues event: 1
- Watch event: 3
- Issue comment event: 2
Last Year
- Issues event: 1
- Watch event: 3
- Issue comment event: 2
Committers
Last synced: 5 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Mikkel Meyer Andersen | m****l@m****k | 199 |
| ggrothendieck | g****k@d****e | 93 |
| Grzegorz Mazur | t****k@g****m | 44 |
| Ivan Jacob Agaloos Pesigan | j****b | 35 |
| sorenh | s****h@m****k | 8 |
| Paolo Bosetti | p****i@u****t | 7 |
| ggrothendieck | g****k@g****m | 3 |
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 4 months ago
All Time
- Total issues: 59
- Total pull requests: 14
- Average time to close issues: 5 months
- Average time to close pull requests: 7 months
- Total issue authors: 22
- Total pull request authors: 5
- Average comments per issue: 2.2
- Average comments per pull request: 3.5
- Merged pull requests: 11
- Bot issues: 0
- Bot pull requests: 0
Past Year
- Issues: 2
- Pull requests: 0
- Average time to close issues: N/A
- Average time to close pull requests: N/A
- Issue authors: 2
- Pull request authors: 0
- Average comments per issue: 0.0
- Average comments per pull request: 0
- Merged pull requests: 0
- Bot issues: 0
- Bot pull requests: 0
Top Authors
Issue Authors
- mikldk (22)
- ggrothendieck (7)
- HaoLi111 (4)
- hojsgaard (3)
- wdkrnls (3)
- jeksterslab (2)
- esther1262 (2)
- bnicenboim (2)
- XiangyunHuang (1)
- a-kramer (1)
- Quiigi (1)
- jiperezga (1)
- piiskop (1)
- jj5 (1)
- pedritomelenas (1)
Pull Request Authors
- mikldk (5)
- grzegorzmazur (4)
- HaoLi111 (2)
- jeksterslab (2)
- pbosetti (1)
Top Labels
Issue Labels
Pull Request Labels
Packages
- Total packages: 1
-
Total downloads:
- cran 1,878 last-month
- Total docker downloads: 45,639
- Total dependent packages: 15
- Total dependent repositories: 17
- Total versions: 18
- Total maintainers: 1
cran.r-project.org: Ryacas
R Interface to the 'Yacas' Computer Algebra System
- Homepage: https://github.com/r-cas/ryacas
- Documentation: http://cran.r-project.org/web/packages/Ryacas/Ryacas.pdf
- License: GPL-2 | GPL-3 [expanded from: GPL]
-
Latest release: 1.1.5
published almost 3 years ago
Rankings
Docker downloads count: 0.6%
Dependent packages count: 4.2%
Average: 6.1%
Dependent repos count: 6.9%
Downloads: 7.2%
Forks count: 8.7%
Stargazers count: 9.2%
Maintainers (1)
Last synced:
4 months ago
Dependencies
DESCRIPTION
cran
- R >= 3.3.0 depends
- Rcpp >= 0.12.0 imports
- magrittr * imports
- methods * imports
- stats * imports
- Matrix * suggests
- Rmpfr * suggests
- devtools * suggests
- exams * suggests
- igraph * suggests
- knitr * suggests
- pkgload * suggests
- rmarkdown * suggests
- testthat >= 2.1.0 suggests
- unix * suggests