Plotting bar help please

Hello

I have spent some time on it and could really use some help please. I have looked at the plot in real time in the help, searched the forum, but the examples isn't enough similarity for me change.

The attached vi is a graph of the waveform (with bars) which I use to show a single value read from a text file. The value in the text file will update once every half hour (from a data logger), for a total of 10 hours (20 values)

I would like to see each point on the graph from left to right with a spacing between the two. The value in the text file will pass (never down) so the plot resulting bars resemble a staircase (but with heights different step). The process will continue with a small break between two periods of update files and previous data points (bars) must therefore be kept (and available by zip, so I can code pretty easily).

Could someone show me how this could be achieved?

Thank you in anticipation

Ray

Hi Ray,

Here are a few examples.

The first - mod bar graph - uses a node back feeding to see if an item has been added to the data file.

You can consider using a graphic as in the second example - graphic bar. With a graphic, you can change the number of data points to resize the waveform table. In this example, a shift register is used to allow only insert new values into the table.

Steve

Tags: NI Software

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