swQuery: Query the SkyWatch API for satellite imagery and...

In fionahevans/agric: Functions for accessing & handling agricultural data.

Description

This is a slight modification of the SkyWatchr function 'querySW' that checks for for a lack of responses. See the querySW help for details on usage.

Usage

swQuery(api_key = NULL, time_period, longitude_latitude,
  instrument_satellite = NULL, data_level = NULL, max_resolution = NULL,
  max_cloudcover = NULL, wavelength_band = NULL, output = "data.frame")

Arguments

api_key	string; personal alphanumeric API key.
time_period	string; one or two UTC timestamps in ISO format (yyyy-mm-ddThh:mm:ss.sssss+|-zzzz).
longitude_latitude	string or an Spatial object.
instrument_satellite	string; source of the data, either the instrument on-board the satellite or the satellite itself.
data_level	numeric; data processing levels for Earth observation data.
max_resolution	numeric; maximum spatial resolution (in meters).
max_cloudcover	numeric; maximum cloud cover (in percentage).
wavelength_band	string; wavelength bands for imagery (i.e. Landsat-8) and by file type for non-imagery data (e.g. Hierarchical-Data-Format).

Value

string; either "data.frame" (default) or "html". "html" returns a data.frame and prints it as html.

Author(s)

Fiona Evans

fionahevans/agric documentation built on May 30, 2019, 12:46 p.m.