Plotting data from sequence structures.

[Remington]

Hi all,

I have a program that contains two pages in a sequence structure. On each page, I am generating data and I would like to plot this data in real-time on an XY graph. I understand that once I've executed Page 0 in the sequence structure, I cannot go back to this page. As such, once this page has finished executed I would need to pass the data to the next page. However, I would like to plot both datasets on *one* XY graph. Is this possible? I've tried putting the graph outside the sequence structure, but the data is not allowed to pass to graph until the page is executed (so it is not real-time plotting). I've included the VI I've been working on.

[Alberto]

Hi,
if you really want to use sequence, you can use a local variable of the graph to add points on the second frame, see modified.vi.
Anyway you can get the same functionality without sequence, see optimized.vi.
Good luck,
Alberto

[Remington]

Hi Alberto,

Thanks for the solution (modified.vi). I really must use the sequence structure in my real experiemnt. Is there a way to get two different colours for each dataset plotted?

Remington.

[Alberto]

Hi again,
you can use properties to change plot colors, but you cannot have two colors on the same plot. What can be done is displaying the two datasets as different plots, thus set different colors.
See example.
Alberto

[Remington]

Hi,

Thanks again! This is exactly what I needed.

Remington.

[mikeporter]

I believe that there is a better way of doing what you want to do. If you could post your code in V6.0 format, I would be glad to take a look at it.

Mike...

[Remington]

Hello Mike,

Thanks for having a look Here it is in 6.0 format.

Remington.