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Subcatchment Population Dialog

This dialog is displayed as part of the process of setting subcatchment population counts from address point data or census data. It is displayed when SubcatchmentPopulation data from census areas or SubcatchmentPopulation data from address point counts is selected from the Model menu.

The options on the dialog vary depending on the menu option selected.

Dialog description

Option

Description

GIS Surface Import

The source from which the population data is to be imported. Choices are:

  • From Files - import from GIS file. Enter the path of the file or browse for a file
  • From Layers - import from layer currently loaded on the GeoPlan. Select layer from dropdown list

The GIS field containing population data can be selected from the Field dropdown.

Update selected subcatchments only If checked, only the population fields of currently selected subcatchments are updated.
Flag Identifier

Flag to be applied to changed data.

An existing flag can be selected from the dropdown or you can click New Flag to display the User Defined Flags dialog.

Value for each Point

Applicable to import from address point data only.

  • From GIS Field - the subcatchment population value will be calculated from the GIS field selected in the Field dropdown in the GIS Surface Import section of the dialog.
  • Fixed - enter a fixed number of people per address. This field is used as a multiplier. If using a building seeds for example, a figure of about 2.8 people per household could be used as an average.
If input data contains invalid geometry

Applicable to import from census data only.

  • Ignore and continue - continue update process if census polygons contain invalid geometry
  • Stop and report - stop update process and display log if census polygons contain invalid geometry
Log

Applicable to import from census data only.

  • Display - if checked, displays a log file for the import process after population values have been updated
  • Summary Table - if checked, displays a summary table in the log file
Parent topic: Setting Population Values from GIS Data

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