embedFig: Generate a figure bitmap file with embedded metadata

In Predictia/metaclipR: A climate4R extension for METACLIP provenance description

Description

The function calls a plotting function, and writes to a user-defined bitmap file, including the full metadata description provided by the user. This information is a compressed JSON representation.

Usage

embedFig(plot.fun, arg.list, full.metadata, format = "png", filename, ...)

Arguments

plot.fun	Character. Name of the plotting function
arg.list	List of arguments passed to the plotting function. The list is functional, and not merely descriptive, so all arguments (including required input grids) need to be passed here.
full.metadata	An igraph-class containing the RDF graph with the full metadata structure.
format	Format of the bitmap file. Currently only the "png" option is available
filename	The name of the output file.
...	further optional arguments passed to png (width, height etc.)

Details

The function performs the following steps:

1. Write the output figure in a temporary file

2. Serialize the RDF graph into json and write it into a temporary file

3. Read the temporary json file and compress (gzip)

4. Read the temporary image file, and re-write into the destination file (as given in filename), appending the compressed metadata

Value

A temporary file of the specified format

Author(s)

J. Bedia

See Also

Other graphical.outputs: graph2json

Predictia/metaclipR documentation built on May 14, 2019, 6:07 a.m.