View source: R/readWQPSample.R
readWQPSample | R Documentation |
Imports data from the Water Quality Portal, so it could be STORET, USGS, or USDA data. This function gets the data from: https://www.waterqualitydata.us For raw data, use readWQPdata. This function will retrieve the raw data, compress it (summing constituents), then converts it to the Sample dataframe structure. See chapter 7 of the EGRET user guide for more details.
readWQPSample(siteNumber, characteristicName, startDate = "", endDate = "",
verbose = TRUE)
siteNumber |
character site number. If USGS, it should be in the form :'USGS-XXXXXXXXX...' |
characteristicName |
character. Either a valid characteristic name, or a 5 digit USGS parameter code. |
startDate |
character starting date for data retrieval in the form YYYY-MM-DD. Default is empty quotes "" which will retrieve the full period of record. |
endDate |
character ending date for data retrieval in the form YYYY-MM-DD. Default is empty quotes "" which will retrieve the full period of record. |
verbose |
logical specifying whether or not to display progress message |
A data frame 'Sample' with the following columns:
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 |
readWQPdata
, dataRetrieval::whatWQPsites
,
readWQPqw
, compressData
, populateSampleColumns
# These examples require an internet connection to run
# Sample_All <- readWQPSample('WIDNR_WQX-10032762','Specific conductance', '', '')
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