Match a pattern?

[Marie Martin]

Hi there,

I've been trying to get people to match a (breath) pattern, and I have
only figured out how to do it on a strip chart with the new observations
showing up at the same time as the saved observations. I'd love to have
the old observations fully loaded so that the person can see what is
coming up. Does anyone know of a way to do this?

For example, can you put one set of saved data onto a graph (or chart,
of any sort) at the beginning of a VI run and then dynamically put data
into a second tracing on the same chart?

I'm using Labview 2.2 on a Mac, which I know is ancient. But it's what
I have...
Marie


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[ian_fung]

what about using two chart stack on each other?
~ load saved data to chart 1 (at the back)
~ plot current data to chart 2 (at the front)

you can do that by making chart 2 transparent except for its trace.

Use the charts' property nodes to fix their scale etc.

This may sound primitive but it works!

cheers
ps> they should be a better way.

[Marie Martin]

oooo. Interesting; I didn't know that was possible. I'll try it.
Thank you!
Marie

"ian.f" wrote in message
news:50650000000500000070810000-1023576873000@exchange.ni.com

> what about using two chart stack on each other?
> ~ load saved data to chart 1 (at the back)
> ~ plot current data to chart 2 (at the front)
>
> you can do that by making chart 2 transparent except for its trace.
>
> Use the charts' property nodes to fix their scale etc.
>
> This may sound primitive but it works!
>
> cheers
> ps> they should be a better way.




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[Greg_McKaskle2]

> oooo. Interesting; I didn't know that was possible. I'll try it.
> Thank you!
> Marie
>
> "ian.f" wrote in message
> news:50650000000500000070810000-1023576873000@exchange.ni.com
>
>
>>what about using two chart stack on each other?
>>~ load saved data to chart 1 (at the back)
>>~ plot current data to chart 2 (at the front)
>>
>>you can do that by making chart 2 transparent except for its trace.
>>
>>Use the charts' property nodes to fix their scale etc.
>>
>>This may sound primitive but it works!
>>
>>cheers
>>ps> they should be a better way.
>>


Actually, if using LV2.2, there is no transparency. Your best bet is to
redo the charting code using an XY graph. There was an example on
making a vertical chart I think, and
that could easily be modified to do
a horizontal chart. You want to plot all of the data, the older
comparison, and the new data each time you want to add new data.

Greg McKaskle

[ian_fung]

hi,
I am not very sure of whether there is any color picker for transparency. It should be a color picker with "T".

Sorry if this won't help.

Hope you (marie)will solve your problem soon.
Cheers!

ian.f
sg/my