Polar plot rotate angular scale

[ASTDan]

Hello,

Is there an easy way to manipulate the angular scale on a polar plot?  Specificaly I want 0 degrees where 90 degees is and then populate counter-clockwise around the circle.

Thanks

Dan

[smercurio_fc]

This question has actually been asked before. The polar plot is drawn using a picture indicator. In order to change the labels you would need to modify one (or more) of the subVIs. Since these subVIs are within the vi.lib folder, you should not modify the original VIs. Based on looking at the Polar Plot VIs, it seems as if the angle labels are handled by the "PC Angle Labels" VI. Thus, you may be lucky and only need to modify this one VI. I would try the "rotating the image" approach first.

If you decide to modify the Polar Plot subVI, then the cleanest way of doing this is to save the Polar Plot VI and all of its subVIs within your own directory structure so that you have your own Polar Plot library. When you want to use the Polar Plot VI, use the one in your directory instead of the one in the functions palette. The reason for this is that you don't want to mess around with the VIs distributed with LabVIEW. If you need to reinstall then you've just lost your work. 

[ASTDan]

I was hoping for a quick and dirty solution.  I guess I will just have to use the dirty one.

Thanks for your sugestion.  I was hoping I wouldn't have to modify those VI's

Dan

[ASTDan]

Do you know how this was done?

I am refering to manipulating the polar graph at the bottom of the document.

http://zone.ni.com/reference/en-XX/help/372416A-01/svtconcepts/bode_polar_plots/

Message Edited by ASTDan on 02-12-2009 11:34 AM

[smercurio_fc]

That was done with the Polar Plot VI that's contained within the Sound and Vibration Toolkit.

[ASTDan]

Cool!  That is what I want.  I have access to the sound and vibration tookit.  For this particular application I have to use LabVIEW 8.2.1 I couldn't find that VI in that version (I have Sound and Vibration Toolkit 4.0 installed for LabVIEW 8.2.1.  I have been trying to figure out if the version of sound and vibration toolkit the polor plot is in and if that version of Sound and vibration toolkit is compatable with LabVIEW 8.2.1.

Thanks

Dan

[ASTDan · Accepted solution]

I installed the updated sound and vibaration suite and I have the Polar Plot VI in 8.2.1. 

I looks like the Polar plot VI is only in Sound and Vibration Suite and not in the toolkit.

Dan