Flowlink 5.1 Software Instruction Manual - Isco

Isco Flowlink 5.1 ® Software
Graph Window
series data against the X-axis. Only data points visible in the
current time span of the graph or table window are scatter
plotted. You can move to the next or previous time span by using
the Actions>Go To options or the Graph Toolbar buttons. To
return to the normal graph or table view from a scatter plot view,
click the scatter plot button again.
This view requires two series of data to be defined. If there are
additional series defined on the Graph Properties window they
will be ignored in the scatter plot view.
The scatter plot view may also be defined as a graph property by
checking the Generate scatter plot check box on the General tab
of the Graph Properties window. The graph property window also
allows you to add a best fit curve to the scatter plot.
The scatter plot includes display elements that help you read the
data. Like normal graphs, the scatter plot includes the title and
subtitle at the top of the display and a time span below the plot
area. Information about the selected data point is reported in the
top-right corner above the plot area. The top-most numbers
reports the X and Y coordinates of the selected point. The
Number of Points identifies how many points have the same X
and Y coordinates. When several points have the same
coordinates, the Time Stamp reports the latest highlighted data
point.
Reference Curve
Using Reference
Curves
Reference Curves allow you to create a data set that can be used
as a weekly “standard” or “baseline” to test or compare other
data sets of the same measurement type.
For example, flow rate data representing a dry weather flow
pattern can be established as a reference curve. The reference
curve can then be compared to flow rates experienced during wet
weather. As a data series, this normal, dry weather flow rate can
also be subtracted from the wet weather flow rate using a series
formula to report the difference.
To establish a reference curve:
1. Graph the data to be used as a reference.
Tip - Because reference curve data repeats weekly,
setting the time scale to one week may be helpful.
2. Locate a suitable week and note the start date.
3. Right-click on the graph and select the Reference Curve
menu option.
4. Enter the Start Date.
5. Select the Destination of the Reference Curve data set.
6. Click OK. Flowlink creates a new data set in the selected
destination.
After creating a reference curve, it can be added to a graph.
When adding a reference curve to a graph containing other data
sets, the reference curve synchronizes to the day of week and
time of the other data sets. The reference curve remains
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