TADA_BigDataHelper: Assist with large WQP data pulls using dataRetrieval

In USEPA/TADA: EPA TADA (Tools for Automated Data Analysis) R Package

Assist with large WQP data pulls using dataRetrieval

Description

This is a helper function that takes large WQP (waterqualitydata.us) queries and splits them up into multiple, smaller queries. By default it pulls data for up to 300 sites or 250,000 data records at a time and then joins the separate pulls back together to produce a single TADA compatible dataframe as the output. Computer memory may limit the size of data frames that your R console will be able to hold in one session.

Usage

TADA_BigDataHelper(record_summary, WQPquery, maxrecs = 250000, maxsites = 300)

Arguments

record_summary	MonitoringLocationIdentifier and resultCount columns from the output of dataRetrieval::whatWQPdata for the WQP query being used.
WQPquery	A named list of query terms to supply dataRetrieval functions.
maxrecs	Maximum number of records to query at once.
maxsites	Maximum number of sites to query at once.

Value

TADA-compatible dataframe

USEPA/TADA documentation built on April 12, 2025, 1:47 p.m.