Missing A Sub VI

[benm92]

I am trying to create an xy graph with two arrays as the input when I try to run the program I get the error "SubVI 'Build XY Graph' : SubVI is missing" where can I get the VI and how do I add it to labview

this is the image of the vi on my block diagram

when I know it should look like this 

[RavensFan]

Your Express VI was turned into a regular subVI by doing an "Open Front Panel" on the original express VI.  If someone saved the newly created subVI, you can go look for it.  If not, you are stuck.  Just delete it and drop a new Express VI.

[benm92]

How do I disable the "open front panel"? I tried deleting the VI and dropping a new one in but I am still getting the same problem.

[RavensFan]

What version of LabVIEW are you using?

I was about to reply how you go to the front panel of your VI, go to the graph palette and drop EX XY Graph.  That drops a graph and it is automatically connected to the Express VI on the block diagram.  But when I did it with LV 2019, I got the broken yellow version.  I have never seen it do this before.  I don't use that often, but when I have it always dropped the blue Express VI.  I opened 2018 and did this process with no problem.

I'm wondering if there is a bug in LabVIEW 2019, and if you are using 2019, that it is a bug that you have found.

[benm92]

yes i'm using 2019 so great I can't do my homework with this version

[Bob_Schor]

As a "Reality Check", I also tried dropping an Express Graph (ooh, I really dislike Express VIs) on my Windows 10 (x64)/LabVIEW 2019.0f2 (32-bit) system.  Block Diagram looks fine to me (see below for Snippet).Ex XY Graph

Bob Schor

[GerdW]

Hi ben,

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@benm92 wrote:

great I can't do my homework with this version

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Well, most of us are able to display plots in XY graphs without using that special ExpressVI.

Go ahead, you will be able to solve your homework!

[benm92]

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@Bob_Schor wrote:

As a "Reality Check", I also tried dropping an Express Graph (ooh, I really dislike Express VIs) on my Windows 10 (x64)/LabVIEW 2019.0f2 (32-bit) system.  Block Diagram looks fine to me (see below for Snippet).Ex XY Graph

Bob Schor

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I think this problem may only be in the student version my teacher couldn't re-create the bug either but i did find a way to graph without the express VI. It was just annoying because that was the only way my online class showed me how to make an xy graph. This is still something that needs to be fixed.

[cbutcher]

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@benm92 wrote:
It was just annoying because that was the only way my online class showed me how to make an xy graph. This is still something that needs to be fixed.

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That does sound annoying. Perhaps you could find a different course? 😉

Joking aside, you can definitely create XY Graphs comfortably without using the Express Nodes or the Dynamic Data Type wire (the thick dark blue wire by default).

It sounds like you've already discovered how, but for the complete list of possibilities you can right click on an XY Graph indicator (on the block diagram) and choose "Help". This will open the detailed help (also available from a link in the Context Help) which contains a section about the different ways you can input values to an XY Graph.

There's an article here about different options for XY Graphs here: Different Methods for Representing Data on an XY Graph

The detailed help can be found online here: Types of Graphs and Charts (XY Graphs).

[altenbach]

To wire two arrays (one for x, one for y) to an xy graph, all you need is wire the two arrays to "RE/IM to complex" (or similar) and wire the resulting complex array to the terminal of the xy graph and the rest will fall into place.