How do I programmatically set chart history length?

[sfrosty]

How do I programmatically set chart history length?

[stu22]

Hi, the first which you have already tried is to right click on the chart and click history and put the length in. Or the second way is to create a property node from the chart and then on block diagram, set it to history through its properties and make sure its set to write. And add a constant or control and put the number at what u want your history to be.

[sfrosty]

Thanks, but I tried using the history property which requires an array input. I set the array to have 5 elements of value 0. When I run the VI the chart history length remains at its' default of 1024 and the chart displays the 5 zero inputs. Is there something I'm not understanding here? Thanks!

[stu22]

Hi, u could try instead of using a chart, u could use an xy graph with a chart buffer and with the chart buffer defining the length/amount points needed. And this also mimics what happens in a chart.

Stuart

[sfrosty]

Thanks!