From the Hydrologic Sampling Editor, the Shape Summary tab displays all the defined shape sets at the same time. The Shape Summary tab consists of two main sections: the shape set summary table and the Exceedance Probability Filter Plot. The summary table lists the defined shape sets, with the weight and resultant probability displayed for each shape set. The shape set summary table is editable, and edits that occur on the Shape Summary tab, automatically update the Shape Sets tab (Hydrographs to Scale (Shape Sets)) and the Exceedance Probability Filter Plot. To edit a cell, click once and type in the new number. Select a cell (or multiple cells, columns or rows) and right-click to access the shortcut menu options to copy, paste, fill, etc. (refer to Hydrologic Sampling Editor Interface for shortcut options).

Hydrologic Sampling Editor, Correlated Flow Frequency method, example Shape Summary tab.

The Exceedance Probability Filter Plot is displayed at the bottom of the tab. To view the Exceedance Probability Filter Plot in a new window, click Plot. The plot illustrates the relative selection probability of each shape set, as well as the exceedance probability range in which each shape set can be selected. Each shape set's vertical thickness reflects the shape set's relative probability of being randomly selected (as defined by the weights). Each shape set's horizontal span depicts the range (between 0.0 and 1.0) of the exceedance probability range that applies to each shape set, on a normal probability axis. The vertical order of the shape sets corresponds to the order in which they were created (top to bottom, first to last).

Hydrologic Sampling Editor, Shape Summary tab, displaying the Exceedance Probability Range list.

As can be seen in the Exceedance Probability Filter Plot, the result of limiting the exceedance probability ranges of shape sets is that the complete 0.0 to 1.0 range is divided at all bounding values, creating sub-ranges in which some shape sets are excluded. Therefore, the relative probability of a given shape set (defined as the shape set's weight divided by the total weight of all available shape sets) may be different in each sub-range. Users can view modified probabilities for different preset sub-ranges in the shape set table by selecting a sub-range from the Exceedance Probability Range list. Note, selecting a different exceedance probability ranges does not change the Exceedance Probability Filter Plot; instead, the selection only updates the last column in the summary table. 

With a sub-range selected (e.g., 0.2-0.05), the Probability (relative to exc. prob. range) column of the table of resultant relative probability displays the values for the selected sub-range, with excluded shape sets having a probability of zero, and others having probability based on the total weight of active shape sets. The Shape Summary tab with the range set to 0.2-0.05 displays an example of a probability sub-range resulting from the collection of ranges, and the subsequent probability of each shape set. The No-interval probability option available from the Exceedance Probability Range list provides the relative probabilities of the shape set(s) if not modified by the probability filters.

Hydrologic Sampling Editor, Shape Summary tab, displaying the Exceedance Probability Range set to 0.2 - 0.5.

When only one shape set exists, that shape set's exceedance probability must span from 0.0 to 1.0. When two or more shape sets exist, the exceedance probability range for all shape sets must together span the full range from 0.0 to 1.0. If the full range for the exceedance probability is not spanned, the missing probability range will be marked in red in the summary table and with an "ERROR" label in the Exceedance Probability Filter Plot. In this case, at least one shape set must be redefined to span the missing range, or another shape set added for the missing exceedance probability range. 

Hydrologic Sampling Editor, Correlated Flow Frequency method, Shape Summary tab, example exceedance probability range error.

Click Apply to save changes made in the Shape Summary tab when navigating between Hydrologic Sampling alternatives. Alternatively, click OK to save the Hydrologic Sampling alternative and close the Hydrologic Sampling Editor. Recall the Data Check button (review Hydrologic Sampling Editor Interface, Data Check section) can be used to search for data consistency error(s) prior to closing the editor.