Line Graph in LabVIEW with Repeating X Values

[JohnLV]

Hi Everyone,

Season Greetings to you all...

I am trying to create a Line Graph in LabVIEW that will plot with repeating X values.

Basically, my data looks like

X Y

0 1

1 4

2 2

3 43

4 43.5

5 55.9

6 68.3

7 80.7

8 93.1

9 105.5

10 8

0 7

1 5

2 3

3 1

4 -1

5 -3

6 -5

7 -7

8 -9

9 -11

10 -13

The Waveform Graph/ Chart will display the Y axis correctly, so the user gets the shape, but the X axis is just in numerical order which is not desired.

If i use the XY graph, the line turns back on itself because the X Values is repeating...

I have tried the X Scale marker values property node, but it did not display correctly.

Sorting X Values is not an option for my problem.

I have attached a Excel Sheet and a VI (LabVIEW 8.2) for your reference.

Thanks and Regards

John

XY Graph.zip

[drjdpowell]

What is your question? If it is the line drawn back from (10 8) back to (0 7) that you don't want, then adding an extra point with a Y value of "NaN" (Not a Number) between them will eliminate the line.

[todd]

Based on your excel file, you want a graph like the bottom one in the attached image, but with more ticks on the x-axis (... 8, 9, 10, 0, 1, 2, ...).

Apparently, you still have to use a workaround. See the non-trivial ideas in the links from Erik's comment in this idea:

http://forums.ni.com...es/idi-p/921601

[JohnLV]

Thanks drjdpowell and todd for your support. But still the links you have mentioned is not helping me to solve the issue..

[todd]

I can't find the post, right now, but someone showed how to use the in-graph picture. Here's my copy of their VI.

use picture to show arbitrary x axis labels.vi