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The text of the label in front of the dropdownlist is configurable. The items in the dropdownlist are also configurable. For this modifier the forecaster can choose between options rain and snow. If snow is selected a value of 2 in set into the time series for the selected period. If rain is selected a value of 1 is written into the time series. The numbers are treated as flags by the model to which the time series is passed.
Time series modifier
The time series modifier is a modifier which allows the forecaster to edit a timeseries by selecting points in a graph or by
changing values in a modifier. In most applications of this modifier the forecaster is directly editing a time series which is used
by the models. For example it might be used to directly edit the precipitation. This is contrary to how for example the single value modifier
WECHNG is used. This modifier edits an empty time series which is than read by the snow17-model which modifies its state based on the input from
this modifier. A time series modifier always has a start- and enddate. Optionally (if configured) a valid time is available.
directly edits a certain time series. In the example below the display for the RunOff Change (ROCHNG) modifier which is configured to change the model produced runoff. The forecaster can edit this time series by making changes in table or in the graph. The changes in the graph are made by clicking in the graph. When the user clicks from left to right then the values between the points are interpolated. When the user clicks from right to left only the newly added or changed points are adjusted but no interpolation will be done between the last two points. When more than one time series is shown in the display it is possible to make a selection of which time series should edited when making changes by clicking in the graph. The time series which should be changed can be selected by clicking on the legend of that example time series in the graph
An example of the use of the time series modifier is the ROCHNG-modifier which is used by NWS to modify the runoff time series.
Display
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Below is an example of how a time series modifier should be configured.
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