Manually adjust absolute time on graph

[jlooker]

I am displaying real time temperature readings as well as data read from file in absolute time format.  I want to be able to adjust maximum and minimum time displayed so I can choose the time period of interest.  Any ideas on how to do this?

[mikeporter]

There are many ways of doing this depending upon what it is exactly that you need. How do you want the user interface to work?

Mike...

[jlooker]

I would like to vary the minimum and maximum time/date with scroll bars so I could look at large trends or zero in on shorter time frames.

Thank you

[SamboNI]

Hi jlooker,

One possible solution would be to use a property node for your waveform graph, with the property: Xscale»Range»All Elements. Then, you could create a control and change your X minimum, maximum and increment with front panel controls.

I've attached a LabVIEW 8.2.1 example, let me know if this is what you were looking to accomplish!

Best regards,

[mikeporter]

I was sort of thinking it might look nice to have a horizontal slide control with two sliders on it. The left end of the slider would be the minimum timestamp in the data, while the right end of the slider would be the maximum timestamp in the data. You could then create a value change event on the slide control that would use the position of the two sliders to segment out the data to display.

OR

you could just plot all the data and let the zoom controls on the graph handle the selection...

Mike...

[Ben]

Zoom control or scroll bar.

Ben

Message Edited by Ben on 05-23-2007 08:38 AM

[B.Settles]

I'm liking Mike Porter's suggestion

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mikeporter wrote:

I was sort of thinking it might look nice to have a horizontal slide control with two sliders on it. The left end of the slider would be the minimum timestamp in the data, while the right end of the slider would be the maximum timestamp in the data. You could then create a value change event on the slide control that would use the position of the two sliders to segment out the data to display.

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has anyone looked any further into this. I've tried this method, but my biggest concern is that the digital displays for the sliders can't be formatted to display time like the scale. Is there a way to change this, or am I going to have to go the XControl way.

[Claire_Reid]

Hi Settlesj,

I have been playing around with the slider control and I couldn't get the digital displays to show the timestamp, but I did come up with a workaround by using the To Timestamp Function. Please see the picture attached.

I will also file a product suggestion saying that the digital display should be able to show the timestamp.