Graphing Directed Motion in Labview

[Cenoc]

I was wondering if it was possible to graph directed motion in Labview. That is, I am trying to graph the motion of the top of a joystick and the direction it is moving in, perhaps with an arrow or some other sort of head. Since the joystick has a center, it would also need to start from the center. Thank you in advance for any help on the matter.

[NIquist]

What do you mean by "Graph"?  Are you looking for a simple visual indicator of the current joystick position or do you actually want to chart the history of its motion?

[Cenoc]

I'd like the whole history with the ability to reset, with a direction indicator on the same display.

[Ben]

just tracking the joystick postion shouldbe straight forward since LV ships with JoyStick function that you can plot on an XY graph but now the complicating follow-up question....

Q:

Does the joystick represent the velocity of some imaginary object that has mass inertia etc?

Ben

[Cenoc]

Nope, it should just track position and the direction that it last moved in. I was wondering how to do it so that I can also extend this to other such cases where directed motion needs to be mapped. Also, where is this vi?

[Ben]

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@Cenoc wrote:

Nope, it should just track position and the direction that it last moved in. I was wondering how to do it so that I can also extend this to other such cases where directed motion needs to be mapped. Also, where is this vi?

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Olivia can help with that!

Explore that palete and look at the help files.

After you init the joystick OUTSIDE a while loop read the postion and add the new value to an array (use a shift register to buffer reading from iteration to iteration) and update an XY graph.

It is a good exercise to start out.

I could make for an electronic version of an Etch-a-Sketch*.

Ben

* copywrite Ohio Arts ?