This repository contains R code that summarizes the length of roads and amount of roadless area in B.C. It supports the 'Roads & Roadless Areas' indicator published on Environmental Reporting BC.
This analysis uses the British Columbia Digital Road Atlas available from the B.C. Data Catalogue and distributed under the Access Only - B.C. Crown Copyright licence. The Digital Road Atlas is the best available single source of road data for the Province of B.C. Metadata details for the Digital Road Atlas (DRA) are available in PDF format from the B.C. Data Catalogue.
The analyses exclude some surface and road types in the Digital Road Atlas. Boat (B), overgrown (O) & decomissioned (D) roads are excluded from TRANSPORT_LINE_SURFACE_CODE and ferry routes (F, FP, FR, RWA), non-motorized trails (T, TD), road proposed (RP), and road pedestrian mall (RPM) are excluded from TRANSPORT_LINE_TYPE_CODE.
The road length analysis sources the Digital Road Atlas from the B.C. Data Catalogue. The roadless area analysis is based on rasterized input data, generated with R code that is also available in GitHub.
One script is required for the road length and road length by road type analysis:
- road_summary.R
There are four core scripts that are required for the roadless area analysis, they need to be run in order:
- 01_load.R
- 02_clean.R
- 03_analysis.R
- 04_output.R
Most packages used in the analysis can be installed from CRAN using install.packages(), but you will need to install envreportutils and patchwork using devtools:
install.packages("devtools") # if you don't already have it installed
library(devtools)
install_github("bcgov/envreportutils")
install_github("thomasp85/patchwork")To report bugs/issues/feature requests, please file an issue.
If you would like to contribute, please see our CONTRIBUTING guidelines.
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.
Copyright 2017 Province of British Columbia
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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