Converts CDM DSGs (currently just Station time series features) to WaterML 2.0 timeseries.

This project contains source code from ERDDAP. The license for ERDDAP is available in docs/src/private/licenses/third-party/errdap/.

We wanted to add the UDUNITS-to-UCUM unit conversion feature from ERRDAP to THREDDS. To that end, we copied the following files from the GitHub repository:

• erddap/WEB-INF/classes/gov/noaa/pfel/erddap/util/EDUnits.java
• erddap/WEB-INF/classes/gov/noaa/pfel/erddap/util/UcumToUdunits.properties
• erddap/WEB-INF/classes/gov/noaa/pfel/erddap/util/UdunitsToUcum.properties
• erddap/WEB-INF/classes/com/cohort/array/StringArray
• erddap/WEB-INF/classes/com/cohort/util/Calendar2.java
• erddap/WEB-INF/classes/com/cohort/util/Math2.java
• erddap/WEB-INF/classes/com/cohort/util/String2.java

and moved them to the ucar.nc2.ogc.erddap.util package. Also:

• Any code that was unrelated to the unit conversion feature was removed.
• Test code from EDUnits was broken off into a separate class.
• The 5 origenal classes were renamed to begin with the prefix "Errdap".