ADS Environmental Services Profile Software 950015B6 - Manual (Page 444)

Scattergraph Editor 12-11
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Generating Scattergraph Curves
After you have successfully set up the scattergraph screen, generate
a scattergraph curve. Display Bestfit, Manning, or Colebrook-
White curves to help edit and evaluate flow data for specific flow
conditions which might exist at the monitoring location. Perform
the following steps to successfully use scattergraph curves:
• Edit abnormal scattergraph data
• Set up the curve parameters
• Generate a curve: Bestfit, Colebrook-White, or Manning
Note: To use this option, the scattergraph's X-axis data
entity must be a depth entity, the left Y-axis data entity
must be a quantity or velocity, and there must be a pipe
associated with the monitoring point (for example, you
cannot generate curves for weirs, flumes, or lookups).
Editing Abnormal Scattergraph Data
It is important to edit and flag data points located significantly
outside the general scattergraph pattern prior to generating a curve.
Points located outside the general curve pattern indicate that they do
not display a normal (typical) relationship between the two selected
scattergraph entities. For example, there should be a typical
relationship between each depth and velocity data point— for each
given depth value, there will be an approximate velocity value. Any
points falling outside of that typical relationship should be flagged
prior to generating the scattergraph curve. Not flagging this type of
data can cause the curve you generate to be skewed by the poor
quality data points.