How do display current time on axial X?And every data change one time per hour .

[acty]

Hi all ,

For waveform chart/graph .

How do display current time on axial X?And every data change one time  per hour .

for detail , see attach file

[GerdW]

Hi acty,

you can try two options:
1) switch the x-scale formatting to 'relative time'
2) initialize your waveform data with correct start time - at the moment it's set to zero and your computer is using timezone GMT+8

[acty]

Thank you in advance !

but how do make interval to be 1 hour for every data ?

[Dennis_Knutson]

It's really simple to use the Elapsed Time function. It has a Boolean output called Time Has Elapsed. Wire this to a case statement and put your data acquisition inside the true case.

[acty]

Could you give me a sample ？

thank you !

[Dennis_Knutson]

Uh, put the Elapsed Time function on your diagram. Put a case statement on your diagram. Wire the Time Has Elapsed output to the case selector.

Maybe you should spend some time learning the basics of LabVIEW. There are a couple of on-line tutorials at http://www.ni.com/academic/lv_training/how_learn_lv.htm.