[R] Forking and adapting an R package

[Adams, Jean]

Timo,

A couple of thoughts ...

First, could you achieve what you want by simply modifying (your own copies
of) a function or two from the hexbin package, without having to modify the
entire package?  This might give you fewer tripping points.

Second, right after you forked the package (so that you have a copy on your
own space on GitHub) and before you modified anything ... were you able to
install and use the package from there successfully?

library("devtools")
devtools::install_github("grssnbchr/hexbin")
library(hexbin)


Jean

On Tue, Jul 12, 2016 at 6:28 AM, <timo at timogrossenbacher.ch> wrote:

> Hello.
>
> I'm trying to adapt the package “hexbin” to suit my needs. This is the
> first
> time I do this. I've read a bit through Hadley's “R packages”, but now I'm
> pretty lost (from a workflow point of view). I am using RStudio and
> Hadley's
> devtools.
>
> So I forked the repo I want to adapt: https://github.com/grssnbchr/hexbin
> and
> cloned it using RStudio (I created a new project). What I basically want
> to do
> is adapt the package slightly and use the adapted source on my use case
> (an Rmd
> file in another location) - ideally, I would call the respective function
> (hexbin::grid.hexagons) in the Rmd and the source code of “hexbin” would be
> called and debugged (just for understanding what the package “hexbin”
> actually
> does in that case, I do not have to build it yet, or even publish it).
> What is
> the workflow for this?
>
> Also, I tried running devtools::check() and it already fails there:
> R version 3.2.5 (2016-04-14) -- "Very, Very Secure Dishes"
>
> Platform: x86_64-pc-linux-gnu (64-bit)
>
> > devtools::check()
> Updating hexbin documentation
> Loading hexbin
> Creating a generic function for ‘plot’ from package ‘graphics’ in package
> ‘hexbin’
> Creating a generic function for ‘summary’ from package ‘base’ in package
> ‘hexbin’
> Setting env vars
>
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> CFLAGS : -Wall -pedantic
> CXXFLAGS: -Wall -pedantic
> Building hexbin
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> '/usr/lib/R/bin/R' --no-site-file --no-environ --no-save --no-restore
> --quiet
> CMD build '/home/tgrossen/R/hexbin' --no-resave-data --no-manual
>
> * checking for file ‘/home/tgrossen/R/hexbin/DESCRIPTION’ ... OK
> * preparing ‘hexbin’:
> * checking DESCRIPTION meta-information ... OK
> * cleaning src
> * installing the package to build vignettes
> * creating vignettes ... ERROR
>
> Error: processing vignette 'hexagon_binning.Rnw' failed with diagnostics:
>  chunk 1 (label = comphexsq)
> Error in eval(expr, envir, enclos) : could not find function “hexbin”
> Execution halted
> Error: Command failed (1)
>
> As you can see, I am very much lost. I googled for "adapt R package and
> debug"
> and so forth but couldn't find any tutorial or anything.
>
> Thanks,
>
> Timo
>
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