readCoordsJS: Importing JavaScript coordinate information.
In gridSVG: Export 'grid' Graphics as SVG

Import Coordinate JS

R Documentation

Importing JavaScript coordinate information.

Description

This function reads in a JavaScript file and transforms it into JSON text. This text is then transformed into a list that can be used in conjunction with gridSVGCoords.

Usage

readCoordsJS(filename)

Arguments

filename

A character vector that represents a file name. This file should be a JavaScript file containing coordinate information produced by grid.export.

Details

In order to use the fromJSON function to parse JSON text, the JavaScript file produced by grid.export needs to be transformed. It needs to transform from being an assignment of an object literal to simply the object literal itself.

This function performs that task by producing a valid JSON string ready for parsing by fromJSON. It then returns the parsed list.