LabVIEW 6i is definitely the easiest way to go here--the dual-Y axis
functionality is built-in for the first time, and the vertical text
option makes it easier to label Y axes.
If 6i isn't an option, my favorite way to simulate a second Y axis in
5 and earlier is to use a customized "Simple Vertical Slide" control
(attached). Drop a slider on your panel and choose Edit>>Edit
Control. In the editor, move the slider housing box to the left of
the scale, the scale numbers to the right of the scale, and
left-justify the numbers. Back on the diagram, paint the arrows and
the slider transparent, hide the label, and then position the
resulting control on the right-hand side of the graph to make a
nice-looking second Y axis.
The trick to using this second axis is to pro
grammatically scale
(multiply) your pressure plot values to fit within the range of the
left-hand temperature axis. Then, using an attribute node, you can
modify the min and max values of your custom slider control/second Y
axis to indicate the real range of your pressure plot.
Regards,
John Lum
