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TSTool Documentation Examples of Use <br />unexpected output if the time series overlap (Julian days will be added). To avoid this situation, use the <br />FillFromTS(), SetFromTS(), or Blend() commands when merging multiple time series. The <br />following example illustrates how to process a frost dates file for StateCU: <br /> <br />SetOutputPeriod(OutputStart="1950",OutputEnd="2002") <br /># _________________________________________________________ <br /># 0130 - ALAMOSA SAN LUIS VALLEY RGNL <br />0130.NOAA.FrostDateL28S.Year~HydroBase <br />0130.NOAA.FrostDateL32S.Year~HydroBase <br />0130.NOAA.FrostDateF32F.Year~HydroBase <br />0130.NOAA.FrostDateF28F.Year~HydroBase <br /># Add Meeker Stations (5484 and 5487) <br /># then "free" 5487 <br />5484.NOAA.FrostDateL28S.Year~HydroBase <br />5484.NOAA.FrostDateL32S.Year~HydroBase <br />5484.NOAA.FrostDateF32F.Year~HydroBase <br />5484.NOAA.FrostDateF28F.Year~HydroBase <br />5487.NOAA.FrostDateL28S.Year~HydroBase <br />5487.NOAA.FrostDateL32S.Year~HydroBase <br />5487.NOAA.FrostDateF32F.Year~HydroBase <br />5487.NOAA.FrostDateF28F.Year~HydroBase <br />FillFromTS(TSList=AllMatchingTSID,TSID="5484.NOAA.FrostDateL28S.Year", <br /> IndependentTSList=AllMatchingTSID,IndependentTSID="5487.NOAA.FrostDateL28S.Year") <br />FillFromTS(TSList=AllMatchingTSID,TSID="5484.NOAA.FrostDateL32S.Year", <br />ExamplesOfUse/FrostDates/Example_FrostDates.TSTool <br /> <br />6.2.6 Modeling – Filling Streamflow Using MOVE2 (Input=HydroBase) <br /> <br />Data filling is an important activity for modeling. TSTool provides a number of data filling commands, <br />as described in Section 4.3 – Fill Time Series Data . Data filling can be accomplished using varying <br />levels of complexity. The approach used for data filling depends on the data type and interval. For <br />example, estimating daily precipitation may be diffi cult because relationships between daily precipitation <br />time series may not exist. TSTool provides tools for data filling but it does not automatically pick the <br />most appropriate fill methods. Data filling involves a number of steps: <br /> <br />1. Initial review of the data (e.g., using the Tools…Report - Data Coverage by Year menu, and <br />graphs). <br />2. Review of the spatial proximity of gages using the TSTool View…Map Interface capability or GIS <br />software (see Chapter 7 for limitations of the map interface). <br />3. Comparison of candidate time series (e.g., using the Results…Graph - XY-Scatter menu). <br />4. Apply data filling commands. <br />5. Review final results visually and review time seri es histories (by right-clicking on a time series in the <br />Time Series Results list and selecting Time Series Properties ). <br /> <br />The data filling approach can be simple or complex. An example of a complex data filling technique is to <br />use the FillMOVE2() command on daily streamflow data. In particular, consider the following case: <br /> <br />• Time series 1 (TS1) has a long period of gaged unr egulated data (e.g., a headwater): 1900 to 2000 <br /> IndependentTSList=AllMatchingTSID,IndependentTSID="5487.NOAA.FrostDateL32S.Year") <br />FillFromTS(TSList=AllMatchingTSID,TSID="5484.NOAA.FrostDateF32F.Year", <br /> IndependentTSList=AllMatchingTSID,IndependentTSID="5487.NOAA.FrostDateF32F.Year") <br />FillFromTS(TSList=AllMatchingTSID,TSID="5484.NOAA.FrostDateF28F.Year", <br /> IndependentTSList=AllMatchingTSID,IndependentTSID="5487.NOAA.FrostDateF28F.Year") <br />Free(TSList=AllMatchingTSID,TSID="5487*") <br /># <br /># _________________________________________________________ <br />FillHistYearAverage(TSList=AllMatchingTSID,TSID="*") <br /># <br /># _________________________________________________________ <br />WriteStateCU(OutputFile="..\StateCU\Frost2002.stm") <br /> <br /> Examples - 7 87