Producing Statistical Reports

Statistical Reports can be generated from the results of one or more simulations. The reports contain summaries relating to selected locations and attributes.

Results data to be used in the generation of statistical reports can be restricted by specifying a time window(s). Only data falling within the specified time window(s) will be used.

The summary data produced includes:

Statistical summaries are produced by first defining the relevant statistics in a Statistics Template and then applying this template to the results of one or more simulations to generate Statistics Results for each simulation. One or more sets of Statistics Results can then be viewed in Statistical Report Views.

The statistics can be copied to a spreadsheet using the usual Windows clipboard options and they can also be exported to CSV files (Export statistical data from the Statistics menu).

Generating a Statistical Report

This section lists the steps required to generate a statistical report:

To generate a statistical report, first define the relevant statistics in a Statistics Template:

  1. In the Explorer Window, create a statistics template by right-clicking on a Model group and selecting either New InfoWorks | Statistics template or New SWMM | Statistics template from the popup menu. Enter a name for the template and click OK. The new statistics template will be displayed.
  2. In the statistics template, ensure that the type of network, for which the summary is to be produced, is displayed in the Network field.
  3. Select the Location type and Attributes for which the summary is to be produced.
  4. Check the list water quality attributes box if you want to include the results for water quality attributes in the report.
    • If the template is for an InfoWorks network, select the appropriate water quality attribute from the list that appears in the Attribute field.
    • If the template is for a SWMM network, enter the name of the pollutant, whose result attributes are to included in the report, in the Attribute field.
  5. Check the use absolute value of attribute box if you want to use the absolute value of the specified attribute.
  6. Check the Identify events and the Calculate percentiles to include these options in the report.
  7. Create a list of network objects for which statistics are to be generated. This can be done be dragging a selection list into the Statistics Template Grid, adding a current selection on the GeoPlan or by typing entries in manually.
  8. Enter up to three Percentiles to be included in the report.
  9. Enter up to three Thresholds, for which the summary will display information for each period when the threshold was exceeded. Define the rules which will determine how exceedances will be treated (e.g. exceedances of short duration to be ignored). See the Statistics Templates topic for further details.
  10. To add further location and attribute combinations, add a new tab to the statistics template by clicking Add new tab.
  11. To specify a period of time or a regularly recurring set of time windows to restrict the data from which statistical results are drawn (for example, to derive statistics for the bathing season parts only of a multi-year run), define a Time Window via the Time Windows dialog.
    Note

    This step is not required when producing a statistical report using the UK 12/24 block spill counting method. See the Statistics Templates topic for further details.

  12. Click Custom Columns to enter, via the Custom Columns dialog, descriptive text associated with each location in the statistical report.
  13. When you have finished editing the template, click Validate to check for errors.
  14. Click Save to save the template and then click to close the template.
Note

You cannot edit or delete a Statistics Template after it has been used to generate statistics.

An existing statistics template can be edited by right-clicking on the template and selecting Open.

To generate Statistics Results and display a set of Statistical Reports apply the template to the results of one of more simulations:

  1. Select Statistical reports from the Results menu or drag a Statistics Results item into the InfoWorks ICM workspace.
  2. The Compose Statistical Report dialog is displayed. Drag the simulations of interest into the Sim / SWMM sim box. Drag a statistics template into the Statistics template box.
  3. Click Produce report.

    You are given the opportunity to generate any missing statistics and, if necessary, re-run the simulations. The status of the Statistics Results item is indicated by the colour of its icon:

    Indicates that the results for this statistical report were successfully generated

    Indicates that the results for this statistical report are not currently available
    Indicates that the results in this statistical report contains errors

    If there are errors in the Statistics Template, an error log will be displayed.

    A set of reports is displayed in a tabbed window. Switch between tabs for different reports. Scroll or page up and down within a report.

Statistics results will usually be generated when a simulation is run but they can also be generated at any other time after the simulation has been run. For each statistics template that is applied to a simulation, a Statistics Results item of the same name will appear below the simulation in the InfoWorks ICM Explorer.

The reports that will be included in the Statistical Report View are:

  • Exceedance Summary Grid
  • Exceedance Detail Grid
  • Simulation Summary Grid

Statistical Report View