README.md

In jefferis/testlazyneuronlist: Testing lazy data load strategies for 'neuronlists'

testlazyneuronlist

The goal of testlazyneuronlist is to test strategies for including large neuronlist objects in R packages. See https://github.com/jefferislab/lhns/issues/2 for some discussion of the underlying issues/approaches.

Installation

You can install the development version from GitHub with:

# install.packages("devtools")
devtools::install_github("jefferis/testlazyneuronlist")

Details

So far this approach works flawlessly for neuronlistfh objects (which naturally separate data and metadata) but is not yet optimal for neuronlist objects.

Specifically setting LazyData: true will make data objects available within the package namespace (and acessible via e.g. testlazyneuronlist::Cell07PNs) but it will also result in the duplication of data with (and corresponding disk space) for the installed package, since the objects will be present in both

• data/Rdata.rdb
• extdata/pns_separated.rds

Two possible avenues to explore could be

1. To try and figure out if the lazy loaded object could remain a promise
2. To see if extdata could delete itself after the lazyload db has been constructed

jefferis/testlazyneuronlist documentation built on May 3, 2019, 4:04 p.m.