Relative time on waveform chart

[GerdW]

Hi kdm,

you ask why?

Because you are using a chart despite of being told to use a graph instead!

Because you are resistant to follow people's suggestions!?

Do you mind to attach your VI with some example data (or a loop generating example data)? (LV2011 preferred)

[kdm7]

Hi GerdW,

Here is the VI

[GerdW]

Hi kdm,

which chart are you talking about?

Create a graph instead. Much easier!

What's the point of all those sequence frames? What's the point of all those local variables?

[kdm7]

Hi all,

I have set conditions to start graph at 6am. I want it to stop graphing at 18:00. Anyone has any ideas?

I have attached my VI.

@Gerd  Thanks. 

 I was talking about the power chart.

[GerdW]

Hi kdm,

when you want to graph between 0600 and 1800 you should check the hour of the current time. Right now you only check minute and second…

And of course you have to change the array build too. Right now you will graph all data as all data is collected…

[kdm7]

Hi Gerd,

Thanks a lot! 

[kdm7]

@Gerd,

As we need to use build array for graphs, won't it increase the memory usage? My labview software crashes when I use build arrays (reason: high memory usage).

Also I am more familiar with charts and prefer to use charts.

Problem now: The chart points (on the attached vi) has reached more than 15:00 (time), when the current time is still 14:13. I have set the multiplier as 0.5 (as loop time is 0.5). What could be the reason?

[GerdW]

Hi kdm,

As we need to use build array for graphs, won't it increase the memory usage?

Yes, you need to limit the memory usgae. The same as you do by setting the history size of charts…

What could be the reason?

Your continued changing of X axis offsets?

[kdm7]

Hi Gerd,

I have set the "offset code" outside the while loop and again set "offset" at a clear graphs loop (which is inside the while loop.. (It is not shown in the above vi).

This looks complicated and I think it will use more memory. Is there a better solution?