EGRET (version 2.3.0)

readWQPSample: Import Sample Data for WRTDS

Description

Imports data from the Water Quality Portal, so it could be STORET, NWIS, or . This function gets the data from: http://www.waterqualitydata.us For raw data, use readWQPdata. This function will retrieve the raw data, and compress it (summing constituents). See chapter 7 of the EGRET user guide for more details, then converts it to the Sample dataframe structure.

Usage

readWQPSample(siteNumber, characteristicName, startDate, endDate,
  interactive = TRUE)

Arguments

siteNumber

character site number. If USGS, it should be in the form :'USGS-XXXXXXXXX...'

characteristicName

character

startDate

character starting date for data retrieval in the form YYYY-MM-DD.

endDate

character ending date for data retrieval in the form YYYY-MM-DD.

interactive

logical Option for interactive mode. If true, there is user interaction for error handling and data checks.

Value

• A data frame 'Sample' with the following columns: lll{ Name Type Description Date Date Date ConcLow numeric Lower limit of concentration ConcHigh numeric Upper limit of concentration Uncen integer Uncensored data (1=TRUE, 0=FALSE) ConcAve numeric Average concentration Julian integer Number of days since Jan. 1, 1850 Month integer Month of the year [1-12] Day integer Day of the year [1-366] DecYear numeric Decimal year MonthSeq integer Number of months since January 1, 1850 SinDY numeric Sine of the DecYear CosDY numeric Cosine of the DecYear }

See Also

readWQPdata, whatWQPsites, readWQPqw, compressData, populateSampleColumns

Examples

# These examples require an internet connection to run
Sample_01075 <- readWQPSample('USGS-01594440','Chloride', '', '')
Sample_All <- readWQPSample('WIDNR_WQX-10032762','Specific conductance', '', '')