Data · dataset · 2012
Green Roofs
Listed in Chicago Data Portal
This dataset and corresponding map provide the location, satellite images and square footage of existing green roofs within the City of Chicago.
Description
This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery.
Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs.
Read the rest (2 more)
A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1).
The median size of the vegetated roofs was calculated to be 5,234 square feet.
Links
Get the data
- CSV data.cityofchicago.org/api/views/q3z3-udcz/rows.csv?accessType=DOWNLOAD ↗
download · from data cityofchicago org
Where it is published
- Chicago Data Portal dataset page data.cityofchicago.org/Environment-Sustainable-Development/Green-Roofs/q3z3-udcz ↗
landing page · from data cityofchicago org
Catalogue records · 1
- SODA API data.cityofchicago.org/resource/q3z3-udcz.json ↗
metadata API · from data cityofchicago org
Topics
- Stated by source
- Environment & Sustainable Development
- From keywords
- Earth & Environmental Science · Social Science
- Inferred from text
- Geoinformatics 69% · Image 65%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Chicago Data Portal | q3z3-udcz | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| concepts[field].anzsrc:group:3704 | enrichment · data cityofchicago org | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[field].local:field:earth-environmental | mapping · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| concepts[field].local:field:social-science | mapping · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · data cityofchicago org | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[topic].socrata_category:data_cityofchicago_org:environment-sustainable-development | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| created_date | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| description | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | /resource/description |
| publication_date | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | |
| title | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 | /resource/name |
| updated_date | source · data cityofchicago org | connector:data_cityofchicago_org@1.0.0 |