topic Re: Plot vertical line over a graph in LabVIEW

Plot vertical line over a graph

Oliveira — Tue, 17 Apr 2007 19:10:09 GMT

How can I plot a vertical line over a wave chart when I click over the
graph?

Thanks in advance!

Re: Plot vertical line over a graph

altenbach — Tue, 17 Apr 2007 20:26:32 GMT

You could just protgrammatically move a cursor to the desired position. Do you want the line at the location you clicked or elsewhere?

What is your LabVIEW version?

Re: Plot vertical line over a graph

Oliveira — Wed, 18 Apr 2007 17:46:05 GMT

At the location that I click. Do you have an example that could send me?

Thanks.

Re: Plot vertical line over a graph

altenbach — Wed, 18 Apr 2007 17:50:22 GMT

Look again in my post. I also asked for your LabVIEW version.

This is important, because newer LabVIEW versions have much better tools to do things like that and the answer will strongly depend on the version. 😉

Re: Plot vertical line over a graph

Oliveira — Wed, 18 Apr 2007 17:54:56 GMT

Sorry, I am using LabVIEW 8.2

Thank you again.

Re: Plot vertical line over a graph

Oliveira — Thu, 19 Apr 2007 14:04:18 GMT

Re: Plot vertical line over a graph

Oliveira — Fri, 20 Apr 2007 17:10:09 GMT

On Apr 18, 3:10 pm, altenbach <x...@no.email> wrote:
> Look again in my post. I also asked for your LabVIEW version.
> This is important, because newer LabVIEW versions have much better tools to do things like that and the answer will strongly depend on the version. 😉

I am using labview version 8.2

Could you send an example?

Thank you again!

Re: Plot vertical line over a graph

Oliveira — Fri, 20 Apr 2007 17:14:34 GMT

On Apr 18, 3:10 pm, altenbach <x...@no.email> wrote:
> Look again in my post. I also asked for your LabVIEW version.
> This is important, because newer LabVIEW versions have much better tools to do things like that and the answer will strongly depend on the version.

I am using labview version 8.2

Could you send an example?

Thank you again!

Message Edited by Oliveira on 04-20-2007 12:15 PM

Re: Plot vertical line over a graph

altenbach — Fri, 20 Apr 2007 18:02:14 GMT

To get the coordinates of the place you clicked, you can use a techniquew similar to one of the shipping examples. Open your example finder and look for the example "draw graph with events".

Once you have the coordinates, you can move a cursor to that location using a property node. Alternatively, you can draw a line using image tools together with the "plot.images" technique. For this, have a look at the example "graph plot area images".

See how far you get. Good luck! 🙂