# Green area use case

In this section scripts for "Green area calculation" use case are prepared.
Grean area (or **greendex**) is an estimation of how green the area around a property is.

## Calculation description

To obtain the green area value, two important components need to be calculated:

- A: Area of the zone of interest (defined by the radius)
- B: Area of green spaces

Then: *Green area percentage = (B / A) x 100*

## Scripts

Three scripts have been prepared for this use case in cases folder:

- simple_with_osm_only.py - simplified version of the calculations. Only OpenStreetMap data is used to obtain geometries of green areas
- advanced_with_landsat.py - advanced version of the calculations. In addition to OpenStreetMap data Landast NDVI images is used to obtain geometries of green areas
- benchmark.py - launch simple version of the calculations for several locations to obtain scale. Results of benchmark script can be visualized as follows: