odg.graphics.conv.hook: Hook function for odg-graphics conversion
In charlotte-ngs/rmddochelper:

Description Usage Arguments Details Examples

odg.graphics.conv.hook is a hook function for knitr chunks which include given graphics using function knitr::include_graphics(). Whenever graphics are produced using LibreOffice Draw and saved as odg-files this hook function can be used to automatically convert the odg-graphics files into files of a different format.

1	odg.graphics.conv.hook(before, options, envir)

`before`	flat to indicate which statements must be executed before the chunk
`options`	list of options passed from the chunk header to the hook function
`envir`	environment

The output format is either set by default to pdf or it is taken from options$out.format. In the current version no validity checks for the output format is done. Whatever can be handled by LibreOffice which is doing the conversion is fine.

Please have a look at the examples section, to see how this hook function can be used. At least two things must be done. First the hook function must be registered using the function knitr::knit_hooks$set() and secondly the code junk must activate the usage of the hook-function by setting the label used in the activation function to TRUE.

Paths in the chunk-labels are either absolute or relative to the location of the Rmd-file

## Not run: 
# activation of hook function somewhere at the top of the document
```{r setup, include=FALSE}
knitr::knit_hooks$set(odg.conv = rmddochelper::odg.graphics.conv.hook)
```
# ... later in the document use the hook function in a junk
```{r some_graphic, odg.conv = TRUE, odg.path="<path-to-odg-files", odg.out.dir="path-to-odg.out.dir"}
knitr::include_graphics(path = "<path-to-odg.out.dir>/some_graphic")
```
 
## End(Not run)