Graphics output using graphics data

Hi all

I have a signal in the range of 0 to 1000 mV that I am aquring using my device to acquisition of data usb or over a period of time.

Let's say I'll connect the DAQ Assistant for the waveform table and display the signal on the chart.

The graph will plot v vs time and after about 60 seconds of acquisition (for example), now I want to analyze the data on the chart "visually", using my eyes, then choose a few points (x, y) graph so to use for calculations in my vi.

Is it possible in labview to click on points on the graph using my mouse and then take the value 'x' (because I'm only interested in the information of the x-axis) which represents the relative time in my case and then undergo calculations using this value?

I'm new to labview so forgive me if this function is already there, but I don't know how to use it.

Thanks in advance

Concerning

Shady

LV 2010 version attached.

I suggest to read the help on graphics and check out a few examples (help > find examples and search for table or graph).

Graphics will store only a finite amount of data (defined by the length of history, default = 1024) but require very little work on your part. You give it just a scalar (or a table if you want to display the serveral tracks) and it will be updated to the x axis, scroll, etc. Because it loses data, I guess that's why NOR did not bother with the sliders, but I don't know.

With a Simple graphic, you will need to feed the WHOLE track, so if do you it point by point, you should have to add each value in a table, feed this table updated the graph. A bit more complicated for a novice like you, but not that hard. Yet once, check the examples. But you could show the sliders (the visible elements > cursor legend) and read the mouse XY coordinates without programming.

Good luck!

Tags: NI Software

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