How to create a waveform graph which displays the real-time data over the entire measurement time?

[twiddler]

I have tried to create a VI which plots the data obtained with an NI USB - 6008 ADC in real time over a defined time(e.g. 10 sec - 30 mins) and all the data to be displayed during the execution.

When I defined the interval in advance the data was displayed just after the execution. How can it be displayed during the excution in real time?

[devchander]

Use a Chart and specify a suitable chart history length to it

To set chart history length, right click on chart>>in drop down menu, select chart history length and type required number of points( if sampling rate is 1000 and you want to display 20 seconds of data, enter 20000)