hia: hia

In RichardLemoine/LSTtools: LSTtools: An R package to process thermal data derived from Landsat and MODIS images

Description

Computes the Heat Island Area (HIA) indicator based on a LST raster layer.

Usage

hia(x, y = NULL)

Arguments

x	LST raster layer.
y	Optional. Shapefile polygon of the city extent.

Details

Computes the Hot Island Area (HIA) indicator in hectares. If y is supplied, it must have the same projection as x. When y is not defined, it is assumed that the LST raster is already cropped to the city extent.

Value

A list with the LST raster layer representing the areas with values higher than the HIA threshold, LST mean, LST sd, HIA threshold and HIA in hectares.

References

Zhang, J. Q., and Wang, Y. P. (2008). Study of the relationships between the spatial extent of surface urban heat islands and urban characteristic factors based on Landsat ETM plus data. Sensors, 8(11), 7453-7468.

Examples

## Not run: # Specifying city polygon
HIA.City <- hia(Llstl8, citypol)
## End(Not run)

RichardLemoine/LSTtools documentation built on Oct. 19, 2020, 12:50 a.m.