Post groups map the model alternative output time series data from the forecast.dss file to a destination data source. The following destinations are supported:

From the Post Editor, from the Post Linking section (Pathname Filters for Post Editor – Post Linking Table), the Post Groups box (Figure 1), lists the defined post groups for a watershed. From the Post Groups box, you can create a post group; delete a post group; rename a post group; make a copy of a post group; select which post groups will run by default during the post process; and, determine the order in which post groups will run in a post process. In addition, you can color code the post groups that will run by default.

Figure 1 Post Groups Box

Create a Post Group

To create a post group:

  1. From the HEC-RTS main window, click on the Setup tab, from the Models menu, click Edit Post, the Post Editor will open.
  2. From the Post Linking section, from the Post Groups box (Figure 1), click New Post Group, the New Post Group dialog will open (Figure 2).
    Figure 2 New Post Group Dialog
  3. In the Name box (Figure 2), enter a name for your post group.
  4. For posting data there is only one data type – Time Series.
  5. From the Destination list (Figure 2) you can select DSS if using a DSS file or KIWIS when using a WISKI database.

The KiWIS option is detailed in WISKI Extract and Post and will not be discussed in this chapter.

  1. From the File box (Figure 2), click . An Open browser will open, browse to the location of the appropriate file, click on the filename, click Open. The Open browser will close, and you will be returned to the New Post Group dialog (Figure 2).
  2. Select the F-Part substitution for the output records. From the F-Part list (Figure 2) you have several options to select from, the default is As Specified.
  3. If you want your post group to run automatically during a post process, select Select in Run Post List (Figure 2).
  4. Specify the Time Window to post the data from the Start and End lists; available options are: Extract Start, Start of Simulation, Forecast Time, End of Simulation. Offsets for the start and end times can also be included, available options are hours, minutes, or seconds. In the Offset box, you will enter the offset increment. This time window is relative to the forecast time window the you defined when you created the forecast.
  5. When you are done, click OK, the New Post Group dialog will close (Figure 2). The new post group will display at the bottom of the Post Groups box, and the information about the post group will display.

Note: Post groups are run in the order they are displayed in the Post Groups box. If you run more than one post group during the post process and there are records that are mapped in more than one of the selected post groups, the last post group mapping will replace all previous mappings.

Adding Output Data to Post Groups

Once a post group is created, you can select which model alternative output records you want to include in in the post group. To add model alternative output records to a post group:

  1. From the Post Groups box (Figure 1), select the name of a post group, the Post Linking table (Post Editor - Post Linking Section) will display information about the selected post group.
  2. In the Available Output section (Figure 3), select all the output records that you want to add to the post group from the table. You can select multiple records by clicking on one record row in the table, then pressing your CTRL key and clicking on any additional records you want to add (Figure 3).
  3. Click Add to Group (Figure 3), the records selected will display in the Post Linking table (Post Editor - Post Linking Section).
    Figure 3 Available Output Table

You can select how much information you want to view in the Post Linking table by clicking . Refer to Post Editor for further details on formatting the Post Linking table. Note: If you have the Hide Assigned Destinations selected, the selected records will not display in the Available Output list.

Selecting Destination Records

When Available Output records are added to a post group, the name of the Available Output record is displayed under the To <data_source> column in the Post Linking table (Post Editor - Post Linking Section). These To <data_source> record pathnames need to be replaced with the destination time series record name.

To select a time series record for the To <data_source> record:

  1. From the Post Linking table, double-click the row in the To <data_source> column you would like to set the time series record for.
  2. Click , which appears in the right section of the cell with the From <data_source> name. The DSS Time Series Record Chooser will open.
  3. From the File menu, click Open, an Open HEC-DSS File browser will open. Browse to the location of the DSS file that contains the records needed, click on filename, click Open. The Open HEC-DSS File browser will close, and the DSS Time Series Record Chooser will display its time series records.
  4. You can filter the time series pathnames displayed in the table by using the Search By Parts Parameters at the top of the DSS Time Series Record Chooser.
  5. To select a time series record to replace the one displayed in the selected row in the Post Linking table, select the time series record row in the DSS Time Series Record Chooser, click Set Pathnames.
  6. The time series record you selected will display in the Post Linking table in the row you original selected.

To set another time series record, from the DSS Time Series Record Chooser:

  1. Click on the next row in Post Linking table that you would like to replace, click on the time series record you want to use in the DSS Time Series Record Chooser, click the Set Pathname.
  2. When all of the time series records have been set in the Post Linking table, from the DSS Time Series Record Chooser, from the File menu, click Close.

Ad-Hoc Records

From the Available Output table, you can add additional time series records to the outgoing data source using the Ad-Hoc record feature in a post group. An Ad-Hoc record allows you to save forecast.dss time series record data to a DSS file even if those records were not listed in the Available Output table.

To add an Ad-Hoc record:

  1. From the Extract Editor, click Add Extract Data Set, the Adhoc: DSS Time Series Record Chooser will open.
  2. From the Search By Parts area (Adhoc: DSS Time Series Record Chooser), use the various filter lists to locate the desired time series record.
  3. Select the pathname row for the record, click Set Pathname.
  4. Once you have selected all the pathnames for all the necessary time series records, from the File menu, click Close. The Adhoc: DSS Time Series Record Chooser will close.