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crossmap

❌🗺 Apply functions to all combinations of list elements in R

https://github.com/rossellhayes/crossmap

Science Score: 26.0%

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    Low similarity (14.8%) to scientific vocabulary

Keywords

functional-programming r rstats tidyverse
Last synced: 6 months ago · JSON representation

Repository

❌🗺 Apply functions to all combinations of list elements in R

Basic Info
Statistics
  • Stars: 21
  • Watchers: 2
  • Forks: 0
  • Open Issues: 1
  • Releases: 9
Topics
functional-programming r rstats tidyverse
Created over 5 years ago · Last pushed 6 months ago
Metadata Files
Readme Changelog License Code of conduct

README.Rmd 

---
output: github_document
---



```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  out.width = "100%"
)

# remotes::install_github("GuangchuangYu/badger")
library(badger)
```

# crossmap 


`r badge_cran_release(color = "brightgreen")`
[![crossmap status badge](https://rossellhayes.r-universe.dev/badges/crossmap)](https://rossellhayes.r-universe.dev)
`r badge_lifecycle("stable")`
`r badge_license(color = "blueviolet")`
`r badge_github_actions(action = "R-CMD-check")`
`r badge_codecov()`
`r badge_codefactor()`


**crossmap** provides an extension to [**purrr**](https://github.com/tidyverse/purrr)'s family of mapping functions.
`xmap()` works like `purrr::pmap()`, but applies a function to every combination of elements in a list of inputs.

**crossmap** also includes a few other general purpose and specialized  functions for working with combinations of list elements.

## Installation

You can install the released version of **crossmap** from [CRAN](https://cran.r-project.org/package=crossmap) with:

``` {r eval = FALSE}
install.packages("crossmap")
```

or the development version from [GitHub](https://github.com/rossellhayes/crossmap) with:

```{r eval = FALSE}
# install.packages("pak")
pak::pkg_install("rossellhayes/crossmap")
```

## Usage

```{r include = FALSE}
library(dplyr)
library(purrr)
library(crossmap)
```

While `purrr::pmap()` applies a function to list elements pairwise, `xmap()` applies a function to all combinations of elements.

```{r}
pmap_chr(list(1:3, 1:3), ~ paste(.x, "*", .y, "=", .x * .y))
xmap_chr(list(1:3, 1:3), ~ paste(.x, "*", .y, "=", .x * .y))
```

`xmap_mat()` formats `xmap()` results into a matrix.

```{r}
xmap_mat(list(1:3, 1:6), prod)
```

**crossmap** also integrates with [**furrr**](https://github.com/futureverse/furrr) to offer parallelized versions of the `xmap()` functions.

```{r}
future::plan("multisession")
future_xmap_chr(list(1:3, 1:3), ~ paste(.x, "*", .y, "=", .x * .y))
```

`cross_fit()` is an easy wrapper for an important use of **crossmap**, crossing model specifications with different formulas, subsets, and weights.

```{r warning = FALSE}
cross_fit(
  mtcars,
  formulas = list(hp = mpg ~ hp, drat = mpg ~ drat),
  cols     = c(cyl, vs),
  weights  = c(wt, NA)
)
```

`cross_list()` finds all combinations of elements from a set of lists.

```{r}
cross_list(number = 1:3, letter = letters[1:3])
cross_tbl(number = 1:3, letter = letters[1:3])
```

And `cross_join()` finds all combinations of the rows of data frames.

```{r}
cross_join(
  tibble(
    color = c("red", "yellow", "orange"),
    fruit = c("apple", "banana", "cantaloupe")
  ),
  tibble(dessert = c("cupcake", "muffin", "streudel"), makes = c(8, 6, 1))
)
```

`map_vec()` and variants automatically determine output types.
This means you don't have to worry about adding `_int()`, `_dbl()` or `_chr()`.

```{r}
map_vec(sample(5), ~ . ^ 2)
map_vec(c("apple", "banana", "cantaloupe"), paste0, "s")
```

---

Hex sticker font is [Source Sans by Adobe](https://github.com/adobe-fonts/source-sans).

Please note that **crossmap** is released with a [Contributor Code of Conduct](https://www.contributor-covenant.org/version/2/0/code_of_conduct/).

Owner

  • Name: Alex Rossell Hayes
  • Login: rossellhayes
  • Kind: user
  • Location: Davis, California
  • Company: Posit Software, PBC

Data Science Educator at @rstudio | Political Science PhD Candidate at UCLA

GitHub Events

Total
  • Create event: 1
  • Release event: 1
  • Issues event: 6
  • Watch event: 1
  • Issue comment event: 2
  • Push event: 20
Last Year
  • Create event: 1
  • Release event: 1
  • Issues event: 6
  • Watch event: 1
  • Issue comment event: 2
  • Push event: 20

Committers

Last synced: over 1 year ago

All Time
  • Total Commits: 139
  • Total Committers: 2
  • Avg Commits per committer: 69.5
  • Development Distribution Score (DDS): 0.022
Past Year
  • Commits: 0
  • Committers: 0
  • Avg Commits per committer: 0.0
  • Development Distribution Score (DDS): 0.0
Top Committers
Name Email Commits
Alex Rossell Hayes a****r@r****m 136
Alex Rossell Hayes 4****s 3
Committer Domains (Top 20 + Academic)
rossellhayes.com: 1

Issues and Pull Requests

Last synced: 6 months ago

All Time
  • Total issues: 7
  • Total pull requests: 4
  • Average time to close issues: 19 days
  • Average time to close pull requests: about 20 hours
  • Total issue authors: 4
  • Total pull request authors: 1
  • Average comments per issue: 1.57
  • Average comments per pull request: 1.0
  • Merged pull requests: 4
  • Bot issues: 0
  • Bot pull requests: 0
Past Year
  • Issues: 3
  • Pull requests: 0
  • Average time to close issues: about 1 month
  • Average time to close pull requests: N/A
  • Issue authors: 2
  • Pull request authors: 0
  • Average comments per issue: 0.67
  • Average comments per pull request: 0
  • Merged pull requests: 0
  • Bot issues: 0
  • Bot pull requests: 0
View more stats
Top Authors
Issue Authors
  • rossellhayes (3)
  • hadley (2)
  • ramiromagno (1)
  • lionel- (1)
Pull Request Authors
  • rossellhayes (4)
Top Labels
Issue Labels
enhancement (1)
Pull Request Labels
enhancement (3)

Packages

  • Total packages: 1
  • Total downloads:
    • cran 616 last-month
  • Total dependent packages: 0
  • Total dependent repositories: 0
  • Total versions: 7
  • Total maintainers: 1
cran.r-project.org: crossmap

Apply Functions to All Combinations of List Elements

  • Versions: 7
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Downloads: 616 Last month
Rankings
Stargazers count: 13.3%
Forks count: 28.8%
Average: 29.3%
Dependent packages count: 29.8%
Dependent repos count: 35.5%
Downloads: 39.0%
Maintainers (1)
alexander@rossellhayes.com
Last synced: 6 months ago

Dependencies

DESCRIPTION cran
  • backports * imports
  • cli * imports
  • dplyr >= 1.0.0 imports
  • generics * imports
  • purrr * imports
  • rlang * imports
  • stats * imports
  • utils * imports
  • broom * suggests
  • covr * suggests
  • crayon * suggests
  • estimatr * suggests
  • furrr * suggests
  • future * suggests
  • testthat * suggests
  • tibble * suggests
  • withr * suggests
.github/workflows/pkgdown.yaml actions
  • JamesIves/github-pages-deploy-action 4.1.4 composite
  • actions/checkout v2 composite
  • r-lib/actions/setup-pandoc v2 composite
  • r-lib/actions/setup-r v2 composite
  • r-lib/actions/setup-r-dependencies v2 composite
.github/workflows/test-coverage.yaml actions
  • actions/checkout v2 composite
  • r-lib/actions/setup-r v2 composite
  • r-lib/actions/setup-r-dependencies v2 composite
.github/workflows/R-CMD-check.yaml actions
  • actions/checkout v4 composite
  • r-lib/actions/check-r-package v2 composite
  • r-lib/actions/setup-pandoc v2 composite
  • r-lib/actions/setup-r v2 composite
  • r-lib/actions/setup-r-dependencies v2 composite