downloadSW: Download satellite imagery and climate/atmospheric datasets...

In SkyWatchr: Search and Download Satellite Imagery using the SkyWatch API

Description

Download satellite imagery and climate/atmospheric datasets using the SkyWatch API based on a query output object obtained from the querySW function.

Usage

downloadSW(x, subset, api_key = NULL)

Arguments

x	data.frame returned by the querySW function
subset	logical expression indicating elements or rows to keep. See details
api_key	string; personal alphanumeric API key. See Details section

Details

x must be a data.frame returned by the querySW function.

If indexes is NULL, all files in the download_path column in x are downloaded. A numeric vector indicating rows of x can be provided to indexes to download only selected files in the download_path column of x.

The subset argument works on the rows of the x object. Columns can be referred to (by name) as variables in the expression (see the examples).

Value

Returns nothing

Examples

## Not run: 
api_key <- "your_personal_alphanumeric_api_key"

# Set the SkyWatchr.apikey option 
options(SkyWatchr.apikey = api_key)

res <- querySW(time_period = "2015-06", longitude_latitude = "48.676074,31.321119", 
               data_level = 3)
View(res)

# Download all files
downloadSW(res)

# Download a subset
downloadSW(res[c(1,3), ])

# Use an expresion to subset files to be downloaded
downloadSW(res, source == "MOPITT" & size_kb < 2400)

## End(Not run)

SkyWatchr documentation built on May 2, 2019, 6:12 a.m.