raster_subsetByDistance: Subset a Raster* by distance from a location

In MazamaScience/AirFireModeling: Utilities for Working with Monitoring Data and Smoke Model Output

Description

This function subsets a raster object just like a round cookie cutter. All cells (up to count) within radius km of the target location are returned.

Usage

raster_subsetByDistance(
  raster = NULL,
  longitude = NULL,
  latitude = NULL,
  radius = 50,
  count = NULL
)

Arguments

raster	A Raster* object.
longitude	Target longitude from which the radius will be calculated.
latitude	Target latitude from which the radius will be calculated.
radius	Distance (km) of radius from target location.
count	Number of grid cells within radius to return.

Value

A Raster* object.

Examples

library(AirFireModeling)
setModelDataDir('~/Data/BlueSky')

# Load model data
rasterList <- raster_load(
  modelName = "PNW-4km",
  modelRun = c(2020091300, 2020091400, 2020091500, 2020091600),
  xlim = c(-125, -115),
  ylim = c(42, 50)
)

Portland_area <- raster_subsetByDistance(
  rasterList,
  longitude = -122.68,
  latitude = 45.52,
  radius = 100
)

raster_ggmap(Portland_area)

MazamaScience/AirFireModeling documentation built on March 13, 2021, 12:02 a.m.