Leaving the New Scenario dialog with OK, you are asked to specify a scenario directory name. As mentioned above, each scenario is stored in a separate directory under the basic scenario directory specified during the installation process. The basic directory of the scenario database is displayed in the dialog. Enter a nonexistent subdirectory name (e.g. tutorial). The directory will then be created automatically.
The GREAT-ER user interface change after having operated the two dialogs:
The view now displays the Aire catchment with river network, discharge sites and catchment boundary, as mentioned in the view's table of contents. The discharge connection results from the fact that sewage treatment plants are situated at some distance from the discharged river. Usually the distance is too small to be seen on the full catchment scale. The site pictures theme is a very special theme which is only visible if photos are available to give users a better impression of the catchment. You are advised to never delete one of these themes.
The view title bar now gives some hints on the displayed data: the name of the scenario, the substance (with CAS-No. if available) and the catchment. The m in brackets warns users that there are unsaved changes. It can either appear for the scenario or the substance.
To also see the comments of a scenario, click with the right mouse button on the view. A dialog with the scenario settings will appear.
The title bar of the ARCVIEW application now displays the name of the active scenario (see above). This is helpful if more than one scenarios are open and visible on the screen.
You may play around with the visible tools (identify, zoom, pan). The identify tool, which is implemented specially for GREAT-ER replacing the usual ARCVIEW identify tool, presents the attributes of selected geographic objects. As the tool considers all active themes (like the original identify tool) and due to the scale of detail, more than one object might be selected by a click. Their attributes are presented sequentially in separate dialogs. To see them all, click "OK", to abort "Cancel".