XY graph & remove erase old data

Hi there-

I have a XY chart that receives the time from the beginning (x) and temperature (y) at user-defined intervals (say, 5 seconds). The graph begins plotting when a 'Start' button is pressed and stops when the user presses the button "Stop". [I know, creative how!] There is a loop that monitors the status of the buttons and then another loop in parallel which adds the current reading to the XY graph using Express construction graph XY ('reset' is set to FALSE), and it uses 'Elapsed Time' to space the data points.

When the VI is on, I would like the user to be able to start and stop several times. This means that the XY graph must be reset. I tried a few methods, but they clear only temporarily, and then when the next point is traced, the former items reappear.

I looked everywhere for a solution to this, but have not been able to find one. I tried the reset by default, writes an empty array to the curve, sending NaN to x and y in the definition of "reset" to TRUE, and a few other variants. [I got an idea: is there a way to erase all the memory associated with a graph?]

My code would be much too complicated to post, so I hope you can help me with my description only.

Quevvy wrote:
I use the Express VI 'Building XY Graph' and uses the entry "reset". But I want to reset before you add the first data point and then back to no adjustment so that all points can be plotted.

I am downloading an idea of how I emptied the graph and how the graph turned after the start and stop it twice.

Picture of you is meaningless. The data are stored in the express VI, sending a whiteboard directly to a property of the graph node will not do something useful.

To make sure that the reset button goes back to FALSE after it has been read by the code, you should lock the action.

Have you tried my example above?

Your data seems to go back in time. It's interesting

Tags: NI Software

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