Display a continuous line of graph using scrollbar

[holla]

Hi all,

Im new to LabView 8.2 and was asked to create a waveform that could measure voltage per minute (voltage/min) for 60 minutes. There are some problems i encountered  in making this.

1) Im not sure which waveform to use.Whether its a waveform chart or a waveform graph.

2) If i was to use waveform chart,which chart must i use? Strip,scope or sweep.

3) The graph should be able to display the waveform for 1 minute first and then continue untill  59 minutes. With the use of a scrollbar, it should be able to scroll the previous result and the next result.So, I should be able to view the waveform from 1 to 59 minutes.

4)Lastly, there is a numeric control which shows; Day,Month,Year,Hours.How can i link this up with the result from the waveform. For example, if I was to choose 29/7/2008 and 5 hours, it should be able to display the results for that particular date and timing.

Any help would be gratefully appreciated.Thanks. I've attached  the front panel for my project.Please take a look if it is there.

[holla]

Sorry,here's the image

[Kevin_S]

Hi holla,

1) I would recommend a Waveform Chart.  A Waveform chart stores all the data it receives in a buffer even though you can't see it all.  Look here and here for more information on chart and graph specifics.

2) See the above links.

3 & 4) See the linked example in order to see how to specify a viewing range for a Waveform Chart using property nodes.

Regards,
Kevin S.
Applications Engineer
National Instruments

[holla]

Hi Kevin_S

Thanks for the reply. Really appreciate it. I quite understand most of the attachment example you sent me. But I'm not quite sure about the X Scale.Range;the minimum,maximum,increment,minor increment and start. What does it do??

[Kevin_S]

Hi holla,

You can browse through the specifics of the Waveform Chart properties here.

Kevin S.
Applications Engineer
National Instruments