Inkscape for including SVG graphics

[fkohrt]

Creating LaTeX PDF reports that contain vector graphics in SVG format require the svg package, which in turn uses Inkscape. Thus, I'd be glad if Inkscape could be installed as a system package.

[fkohrt]

As #275 seems not to get merged, an alternative is to use the rsvg R package. Its dependency librsvg has already been merged (#43).

Here's an example Rmd:

---
title: SVG Test
output: pdf_document
---

```{cat, svg-drawing, engine.opts = list(file = "./drawing.svg")}
<?xml version="1.0" encoding="UTF-8"?>
<svg width="96.725mm" height="50.327mm" version="1.1" viewBox="0 0 96.725 50.327" xmlns="http://www.w3.org/2000/svg" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
 <metadata>
  <rdf:RDF>
   <cc:Work rdf:about="">
    <dc:format>image/svg+xml</dc:format>
    <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
    <dc:title/>
   </cc:Work>
  </rdf:RDF>
 </metadata>
 <g transform="translate(-27.689 -45.179)">
  <path d="m100.09 88.093-6.259-9.7729-10.235 5.4701 3.7384-10.987-10.658-4.5917 10.921-3.9274-3.0554-11.196 9.8795 6.0894 6.8483-9.3694 1.3988 11.521 11.595-0.48748-8.1351 8.2767 7.6106 8.7615-11.543-1.1998z" fill="#ff0808"/>
  <text x="83.593781" y="83.789787" fill="#000000" font-family="'CMU Serif'" font-size="12.7px" letter-spacing="0px" stroke-width=".26458" text-align="end" text-anchor="end" word-spacing="0px" style="line-height:1.25" xml:space="preserve"><tspan x="83.593781" y="83.789787" font-size="3.8806px" stroke-width=".26458" text-align="end" text-anchor="end">This is a test for testing.</tspan></text>
 </g>
</svg>
```


```{r, echo=FALSE}
rsvg::rsvg_pdf("./drawing.svg", "./drawing.pdf")
knitr::include_graphics(normalizePath("./drawing.pdf"))
```