How two graphic signals, taken at different times on the same chart?

Hello

I am trying to graph 2 files different tdm on a chart. The files are the same

Time Sensor 1 Sensor 2 Difference Sensor 3
03/07/2013 08:26:30.214 AM -0.001 0 0.001 3.2109957
03/07/2013 08:26:31.489 AM -0.001 -0.226 0.225 3.251679525
03/07/2013 08:26:32.249 AM -0.149 -0.198 0.049 3.1567506
03/07/2013 08:26:33.192 AM -0.135 -0.248 0.113 3.315462225
03/07/2013 08:26:34.336 AM -0.135 0.17 0.305 3.2682213

I need graphic of the two signals (time vs 3 sensor data from two different files). The registration of signal rate changes by file and within each file, so I need to keep the time interval between each reading, but a necessity, the two waveforms to chart on each other, no matter what day/time, each file was saved to. Please see attachment for an example.

I can read data from the file and graph several waveforms (generic of generated sine waves) on the same graph, is the part that I'm stuck how to get x/time-axis to work properly.

Thank you

Two options:

(i) use relative time instead of absolute time. If dt is not constant, you cannot use waveforms. Use an XY graph and subtract the time stamp first of each timestamp in the data/file set. Either your departure time will be zero (or 1904 if you want).

(II) draw the two sets of data in a XY Chart, using two x scales. With the right button of the x-scale and select "Duplicate scale" (or something close to it), then go to 'Settings'-> 'Ladders' and change the new scale. Now go to the tab 'Traces' (always in 'settings') and configure your two plots using separate x-scales.

Tags: NI Software

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