README.md

In ampaho/imagine: Image Manipulation (format conversion, crop, resize, animation)

imagine

R package for image manipulation (resize, crop, conversion) and animation

Requirements

You must install ImageMagick or GraphicsMagick for imagine to work

Installation

library(devtools)

install_github("ampaho/imagine")

Usage

There is only one function in the package and you can complete most tasks in one line

Animation using an alias

imagine("pic*.png", "pic.gif", list(operation="animation", delay=50))

Animation with a vector files

imagine(c("pic1.png", "pic2.png", "pic20.png"), "pic.gif", list(operation="animation", delay=50))

Image format conversiom

imagine("Rlogo.png", "Rlogo.jpg")

Crop an image

imagine("large_picture.bmp", "cropped_pic.jpg", list(operation="crop", crop.offset=c(50, 150), crop.gravity="NorthEast"))

Resize an image

imagine("large_picture.bmp", "resize_pic.png", list(operation="resize", with="200", ratio=0.8))
#could have used height as well, but ratio will keep the image proportion

Rotate an image

imagine("Rlogo.png", "rotated_Rlogo.bmp", list(operation="flip", rotation=90))

Todo

* Draw an image using MVG
* Convert a SVG to any other format (from a an SVG file or inline)
* Modify an SVG file and save the result
* Introduce a new function to print the resulting file after any manipulation

ampaho/imagine documentation built on May 12, 2019, 2:37 a.m.