https://github.com/jokergoo/colorramp2

Generate Color Mapping Functions
https://github.com/jokergoo/colorramp2

Last synced: about 1 month ago
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Generate Color Mapping Functions

• Host: GitHub
• URL: https://github.com/jokergoo/colorramp2
• Owner: jokergoo
• License: other
• Created: 2022-12-13T10:14:14.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2022-12-13T10:16:46.000Z (about 2 years ago)
• Last Synced: 2024-11-16T16:20:24.071Z (about 2 months ago)
• Language: R
• Size: 8.79 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        


# colorRamp2: Generate Color Mapping Functions

## Install

The package can be installed from CRAN:

```r

install.packages("colorRamp2")

```

or directly from GitHub:

```r

devtools::install_github("jokergoo/colorRamp2")

```

## Usage

The `colorRamp2()` function can generate a color mapping function from a vector of break values

and a vector of corresponding colors. Other colors are linearly interpolated in a certain color space.

```r

library(colorRamp2)

col_fun = colorRamp2(c(0, 0.5, 1), c("blue", "white", "red"))

col_fun(seq(0, 1, length = 20))

```

```

##  [1] "#0000FFFF" "#522CFFFF" "#7448FFFF" "#8E61FFFF" "#A479FFFF" "#B891FFFF"

##  [7] "#C9A9FFFF" "#DAC1FFFF" "#E9DAFFFF" "#F8F3FFFF" "#FFF5F1FF" "#FFE1D6FF"

## [13] "#FFCDBBFF" "#FFB8A1FF" "#FFA388FF" "#FF8E6EFF" "#FF7756FF" "#FF5E3DFF"

## [19] "#FF3F23FF" "#FF0000FF"

```

```r

plot(NULL, xlim = c(0, 1), ylim = c(0, 1))

x = seq(0, 1, length = 20)

y = rep(0.5, 20)

points(x, y, pch = 16, col = col_fun(x), cex = 2)

```

![image](https://user-images.githubusercontent.com/449218/207290643-548390f6-d09e-4ad0-bcc3-9864ca5b87e6.png)

## License

MIT @ Zuguang Gu