Campbell Scientific ID-2000W Software - Manual (Page 45)

SECTION 3. PLOT TEMPLATE VIEW
3-13
3.9 DATA MARKERS
ID-2000 provides the capability of marking data
traces to assist you in distinguishing them on
monochrome displays or printers. These
markers consist of a small square with a
number in it that is displayed periodically along
a data trace. Each data trace uses a different
number which is also included in the Y-axis
parameter title for reference.
Data markers are only available for Multi-Plot
and X-Y-Y plots where multiple data traces are
plotted on a common graph.
Data markers may be enabled or disabled via
the View - Data Marker menu item or the
Plotting Preferences dialog.
Figure 3-14 is an example of a Multi-Plot with
and without data markers enabled.
3.10 REFERENCE TIME
One of the powerful features in ID-2000 is the
capability to overlay data from different files. In
order to plot parameters in multiple files versus
time you must be able to synchronize the files in
time. Selecting the “Reference Time”
parameter instead of “Time” for the X-axis
parameter allows you to plot data versus time
by using a reference time instead of actual time.
In order to use the reference time feature, you
must select a point in each data file that will be
assigned a reference time of “0.0” seconds.
Data prior to that point will be considered to
have negative time and points following will
have positive time. This technique allows you to
synchronize multiple data files at their 0.0
reference time points so that you can perform
data trending.
FIGURE 3-14. Multi-Plot with and without Data Markers