emilieyds/oyo-phc-location

Analysis of primary health care facility locations in Oyo state, Nigeria. It aims to count the number of PHC in the state, measure the distance between the nearest facility. ## Primary health centre (PHC) clustering in Oyo State, Nigeria This repository contains a spatial analysis of primary health centre (PHC) clustering in Oyo State, Nigeria. The analysis estimates: - the number of PHCs in Oyo State - nearest-neighbour distance between PHCs - the number of clustered and isolated PHCs using 0.5 km, 1 km, and 2 km thresholds **Rendered report:** emilieyds.github.io --- ## Repository structure ```text data/ ├── raw/ # downloaded raw datasets ├── processed/ # cleaned and processed spatial layers ├── metadata/ # metadata outputs/ # exported maps, figures, and summary tables report/ ├── oyo_phc_clustering_report.Rmd ├── oyo_phc_clustering_report.html scripts/ ├── 01_download_clean_data.R ├── 02_nearest_neighbor_analysis.R ├── 03_visualization_outputs.R ``` Please follow the following instructions to run the code. 1. Install the following R packages used for the data analysis and replication of figures and tables: ``` install.packages(c("sf", "tidyverse", "knitr", "see")) ``` 2. Download and clean data using `script/01-download-clean-data.R`.This script downloads and prepares GRID3 Nigeria Health Facilities v2.0 and Nigeria administrative boundary data. Raw datasets are stored in `data/raw/`. Metadata and source documentation are stored in `data/metadata/`. 3. Run `scripts/02_nearest_neighbor_analysis.R` to calculate nearest-neighbour distance between PHCs and classify facilities using the 0.5 km, 1 km, and 2 km distance thresholds. This script uses the cleaned PHC dataset from `data/processed`, projects the facility locations to UTM Zone 31N for distance calculation, and saves the analysis-ready spatial layer back to `data/processed`. 4. The script `03-visualization-outputs.R` is used to reproduce the figures, maps and tables in the report. Outputs are saved in `outputs`. 5. The report outlining the overall analytical flow can be found in the `report` folder in both …