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Subsections
The chart options of ARCVIEW are quite
limited. Only 50 data points can be displayed within an X/Y plot used for
the concentration profile. For this reason the profile might not display all
stretches downstream from the selected stretch. To deal with this limitation
GREAT-ER provides users with the Export Profile feature to
write the complete stretch set to a file (either plain ASCII or dBase)
for further analysis or more comfortable plotting with the user's favourite
data plotting or spreadsheet application.
GREAT-ER combines the data needed for
simulations from various tables (which is usual for GIS and
databases in general). ARCVIEW, as the underlying database system,
provides a complex sequential approach for this task.
The mentioned error might occur (usually if a network is involved) as a result
of timing problems while resolving these links (while editing a scenario).
The error
can not be prevented and it is recommended to close the scenario and
GREAT-ER immediately.
Closing GREAT-ER and therefore
ARCVIEW might lead to a cryptic error message caused by
ARCVIEW. This is not an error of GREAT-ER but of ARCVIEW itself.
It may also occur if you open ARCVIEW and leave it again without any
further action.
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F. Koormann & J.-O. Wagner, Institute of Environmental Systems Research, University of Osnabrück