ifarah / prclz

geospatial hierarchy and structure extraction

p  r  c  l  z

"parcelize"

overview/

prclz is a library for:

• generating vectors for street blocks in a neighborhood using street network information from OpenStreetMap
• creating parcels/cadastral maps for building footprints and other land use features within each block
• calculating structural and areal features (k-complexity of access graph, percentage of land used by buildings, etc) at the block and neighborhood level

structure/

• prclz: main library

  • blocks: extract vector polygons representing street blocks from street network information
  • features: calculate per-block features
  • parcels: generate cadastral parcels tesselating each block given building/land use footprints
  • topology: planar graph implementation, with tools to calculate weak duals. largely taken from openreblock/topology.

• smoketests: not quite unit tests, but visual tests to make sure things look right

• osm-etl: scripts to perform ETL on *.osm.pbf files and extract relevant features.

• midway: end-to-end workflow to be run on RCC's midway cluster

• requirements: required packages

development setup/

0. on midway, load the necessary modules

module load intel/18.0
module load gdal/2.2
module unload python
module load Anaconda3/5.1.0
module load parallel

1. Set up a conda virtual environment, and activate it.

. ./midway/conda_setup.sh
conda create --name mnp
source activate mnp

2. Install the requirements. (Due to version pinning/compatibility, some packages aren't in the standard conda repos, so we install them with pip).

conda install --name mnp -f -y -q -c anaconda -c conda-forge --file requirements/conda-requirements.txt
pip3 install -r requirements/pip-requirements.txt

3. From the top-level directory, install prclz in editable mode.

pip3 install -e .

4. Deactivate your virtual environment once you're done

conda deactivate

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