Boston tree canopy and heat index data.Source:
A dataset containing data on tree canopy coverage and change for the city of Boston, Massachusetts from 2014-2019, as well as temperature and heat index data for July 2019. Data is aggregated to a grid of regular 25 hectare hexagons, clipped to city boundaries. This data is made available under the Public Domain Dedication and License v1.0 whose full text can be found at: https://opendatacommons.org/licenses/pddl/1-0/.
A data frame (of class
containing 682 records of 22 variables:
Unique identifier for each hexagon. Letters represent the hexagon's X position in the grid (ordered West to East), while numbers represent the Y position (ordered North to South).
Area excluding water bodies
Area of canopy gain between the two years
Area of canopy loss between the two years
Area of no canopy change between the two years
2014 total canopy area (baseline)
2019 total canopy area
The change in area of tree canopy between the two years
Relative change calculation used in economics is the gain or loss of tree canopy relative to the earlier time period: (2019 Canopy-2014 Canopy)/(2014 Canopy)
2014 canopy percentage
2019 canopy percentage
Absolute change. Magnitude of change in percent tree canopy from 2014 to 2019 (% 2019 Canopy - % 2014 Canopy)
Mean temperature for July 2019 from 6am - 7am
Mean temperature for July 2019 from 7pm - 8pm
Mean temperature for July 2019 from 6am - 7am, 3pm - 4pm, and 7pm - 8pm (combined)
Mean heat index for July 2019 from 6am - 7am
Mean heat index for July 2019 from 7pm - 8pm
Mean heat index for July 2019 from 6am - 7am, 3pm - 4pm, and 7pm - 8pm (combined)
Geometry of each hexagon, encoded using EPSG:2249 as a coordinate reference system (NAD83 / Massachusetts Mainland (ftUS)). Note that the linear units of this CRS are in US feet.
Canopy data is from https://data.boston.gov/dataset/hex-tree-canopy-change-metrics. Heat data is from https://data.boston.gov/dataset/hex-mean-heat-index. Most field definitions are from https://data.boston.gov/dataset/canopy-change-assessment-data-dictionary.
Note that this dataset is in the EPSG:2249
(NAD83 / Massachusetts Mainland (ftUS)) coordinate reference system (CRS),
which may not be installed by default on your computer. Before working with
sf::sf_proj_network(TRUE)to install the CRS itself
sf::sf_add_proj_units()to add US customary units to your units database
These steps only need to be taken once per computer (or per PROJ installation).