xy graph in real time?

[Vadim]

Good day All.
In my experiment I obtain a value of current from voltage, and want plot

them point by point in real time. I can't use chart because voltage can
increase and decrease, if use XY graph I can plot graph only after
measurement. If use XY chart example in the general/graphs, need
prepare array from 1, then 2, then 3 � elements. After ~ 1000 point plot

each new point (array(N+1)) is very slowly.
Are you have decision this problem?
Please email me.
Best Regards.
Vadim.

[FriedSH]

In article <38311641@newsgroups.ni.com>, "Vadim"
writes:

>Good day All.
> In my experiment I obtain a value of current from voltage, and want plot
>
>them point by point in real time. I can't use chart because voltage can
>increase and decrease, if use XY graph I can plot graph only after
>measurement. If use XY chart example in the general/graphs, need
>prepare array from 1, then 2, then 3 � elements. After ~ 1000 point plot
>
>each new point (array(N+1)) is very slowly.
> Are you have decision this problem?
>Please email me.
>Best Regards.
>Vadim.
>
>

Vadim,

There is an example in Bridgeview of just this kind of graph which works very
nicely. I don't know if it is also included in LV, but most of them are.

See Examples/G
Examples/General/Charts.llb. The vi is XY Chart Buffer.vi.
This produces a graph which scrolls just like a chart.

Good luck.
Samuel Friedman
FriedSH@aol.com
The reply address is spamblocked. Please use the address in the signature to
reply.

[Swordfish78]

I seem to have the same exact question. Sorry, but I can't see how the VI (in Labview) you pointed out is of any help. It does not produce any graph for me. I've included my own simulated problem, in case you can tell me what I need to do in order to see my data being plotted as it is being collected. If you need a more detailed explanation, it can hopefully be found accompanying the VI itself.

Thanks for your help.