DAVIS WeatherLink for Windows 4.0 - Manual (Page 80)

U S I N G T H E S O F T W A R E
Using the Plot Window
71
Plotting Data From More than One Date (Overlay)
The software features an “overlay” plotting mode which enables you to plot data
from more than one day on a single plot. Overlaying is only possible when you
have a single variable plotted.
1. Choose Overlay from the Plot menu or press F9.
The Overlay dialog box appears. The single date currently plotted appears in
the Plot Dates list. The dates of all data in your database appears in the dates
Available list.
O VERLAY
2. To add a date to the plot, double-click on a date in the Dates Available list or select a
date and choose Add.
All dates which are going to be plotted in the Overlay plot appear in the Plot
Dates list (you may have a maximum of 10 dates plotted). To remove a single
date from the plot, double-click on the desired date in the Plot Dates list (or
select the date and choose Remove). To remove all but the original date from
the Plot Dates list, choose Clear.
3. If you want to select custom colors for overlaid dates, select the desired date in the
Plot Dates List and choose Color.
Windows’ Color dialog box appears. Choose or create the desired color in
which you want the date plotted. Consult your Windows’ documentation for
instructions on choosing or creating colors.
4. To view the Overlay plot, choose OK.
The software plots data for all selected dates. Note that the span button and
the zoom icons disappear (you may not zoom in/out, change plot spans, or
view details while viewing an overlay plot) and the axis info buttons now dis-
play date information instead of variable information. While viewing overlay
plots, you may scroll through dates using the scroll bar or left/right arrow
keys; all plotted dates will shift by the same amount as you scroll. You may
also change the variable you are plotting by choosing a new variable from the
variables box or Add/Remove sub-menu, or by pressing the up/down arrow
keys.