WaterML: Fetch and Analyze Data from WaterML or CUAHSI WaterOneFlow Web Service

Lets you connect to any CUAHSI WaterOneFlow web service from any hydroserver. To see list of available hydroservers, see http://hiscentral.cuahsi.org. The package has five data download functions: GetServices(): show all public HydroServers from the HIS Central Catalog. HISCentral_GetSites() and HISCentral_GetSeriesCatalog(): search for sites or time series from the HIS Central catalog based on geographic bounding box, server, or keyword. GetVariables(): Show a data.frame with all variables on the server. GetSites(): Show a data.frame with all sites on the server. GetSiteInfo(): Show what variables, methods and quality control levels are available at the specific site. GetValues(): Given a site code, variable code, start time and endtime, fetch a data.frame of all the observation time series data values. The data.frame has two columns: time and DataValue. This function has an optional "daily" parameter, you can set daily="max", daily="min" or daily="mean" to get aggregated daily values. The GetValues function can also retrieve WaterML 1 or WaterML 2.0 data from a custom URL or from a local file. The package also has five data upload functions: AddSites(), AddVariables(), AddMethods(), AddSources(), and AddValues(). These functions can be used for uploading data to a HydroServer Lite ODM database via the JSON data upload web service interface.

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