two plots to waveform graph

[indcon_wan]

Hi,

I need to use cursors on my waveform, so need to use waveform graph. I have 2 signals and when I use build array, it combines both signals into one plot. The waveform graph only show one plot. How can I have 2 plots on my waveform graph?

[GerdW]

Hi wan,

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@indcon_wan wrote:

I have 2 signals and when I use build array, it combines both signals into one plot. The waveform graph only show one plot. How can I have 2 plots on my waveform graph?

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Why don't you look at the context help for the waveform graph?

It explains how to create multiple plots…

LabVIEW also comes with a huge example library and there are examples on how to use graphs and charts. Did you examine those example VIs?

[indcon_wan]

Hi Gerd,

The context help does not explain how to use the waveform graph as chart (continuous plot) with multi plots. Most of the example I checked out do multiplot on waveform graph is read data and plot.

The build array joints both data to form into a new single data.

The build waveform and merge signals does not show any plots on the waveform graph.

[GerdW]

Hi wan,

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@indcon_wan wrote:

The context help does not explain how to use the waveform graph as chart (continuous plot) with multi plots.

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• The help explains how to show several plots ("multiple plots").
• A graph is a graph and not a chart.
  When you need behaviour like a chart you need to buffer the data on your own in the same way as a chart would do.

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@indcon_wan wrote:

The build array joints both data to form into a new single data.

The build waveform and merge signals does not show any plots on the waveform graph.

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• The BuildArray builds an array in the way that YOU have configured. When you need a different (kind of) array then YOU need to create this array in a different way!
• Using ExpressVIs to convert good, nice waveform/array data into DDT wires will not help at all.
  Try to get rid of ExpressVIs as soon as possible…

[indcon_wan]

I have created buffer but the graph is charting with multiple lines. I have remove Express VIs.

[GerdW · Accepted solution]

Hi wan,

see this example:

My example creates 8*2 plots…

Why did you enable the "Transpose Array" option in the graph settings? Do you know the consequences of that setting?

[indcon_wan]

Hi GerdW,

I managed to find an example to solve my problem. Thanks for your suggestion.