plot in graph

[Krish101]

Hello Sir, 

    I have acquired 4 temperatures using 4 channels of  thermo-couple in DAQ. i even started recording data in excel for specific period of time. Now i want to plot those temperatures in graph ie 4 signnals in one graph with x axis as time and y axis as my temperatures in lab view. please help.

[crossrulz]

Are you looking to graph this in real time (as data is collected) or as a post process?

[vsenthil957@gmail.com]

Hi krish

          You can use duplicate scale option in y scale to display 4 temperatures in Y scale for 4 channels.

regard

senthil

[AliasAlreadyOnFile]

If you plot them as you're collecting them you can use your data arrays to build and update waveforms for each channel and plot them on a waveform graph. Your time increments must be the same for each channel (can't have data collected at random times) but you can have different time increments between the channels.

There's nothing stopping you using this for data imported from excel either. Same conditions as above will still apply. If your data collection time increments were not uniform then you could use an xy plot, as above. You can then input a data array and a time array separately.

Hope this helps,

Phil

[Hatef.fouladi]

go express and use merge signal 

[Dennis_Knutson]

Don't 'go express and merge signal'.

The 4 channels should already be a single acquisition and the output of the DAQmx can be wired directly to a graph for the display. If you configure the DAQmx Read to return waveforms, that will include timing information that can be displayed on the graph. No programming required.