Review Graph Setup
Using TestWorks 4
Setting the Axis Scale
Having the proper scale for you axes is important for the graph to be sized
properly. If the scale is too large the data curves will be too small to
distinguish details. Likewise, if the scale is too small, the data curves will
not fit on the graph. TestWorks 4 allows you to set the scale of an axis by
specifying the maximum and minimum values for that axis.
The easiest way to determine the best scale for an axis is to let TestWorks 4
do it for you. Near each end (max and min) of each axis on the example
graph you will find a check box labeled “Auto.” If this box is checked,
TestWorks 4 will automatically set the scale for that end (max or min) of the
axis to produce a proportionally sized graph. The scale value (max and/or
min) will change depending on the data plotted in the data curves.
You can set the scale values manually to fixed values. To do this, uncheck
the Auto check box at the place you want to set the scale. The edit box next
to the Auto check box will become enabled. Enter the scale value you want
in this edit box. For example, if you are plotting Load in pounds force on the
Y-Axis, you could set the minimum scale value for the Y-Axis to 0 and the
maximum scale value for the Y-Axis to 5000. In this case, your Y-Axis will
be fixed at a range of 0 lbf. to 5000 lbf.
It is possible to plot more than one channel along a single axis. All channels
you plot on a single axis must use the same unit class. For example, you can
plot two channels that measure a force on the same axis but not a channel
that measures force and one that measures distance.
To plot multiple channels on the same axis, first select one of the channels
you want just like you normally would. Then select the channel selection
combo box for the axis you wish to use. Select the unit you want from the
units combo box. Place a check in the Multiple Channels check box. This
will cause the Select button just below the check box to be enabled. It will
also cause the Multiple Channels check box for the other axis to become
disabled. You can only use one axis for plotting multiple channels.
Press the Select button to bring up a dialog for selecting the channels you