circle LED

[salah_m7]

Hello everyone

please I need to know if anybody had done before an algorithm or a vi that ,given the value of the radius, can display a circle using leds (boolean terminal) in LabVIEW like the picture in the attachement

[RavensFan]

No.  But you ought to be able to do it with a 2-D array of booleans, and some simple math using the index values to determine whether a boolean should be on or off based on the equation for a circle.

[GerdW]

Hi,

you might use a 2D picture for that purpose: draw a circle in a picture and display it in a picture indicator. If you really need to use an array of LEDs you can convert that picture to a black/white pixel array that in turn will be displayed by your array indicator:

[alexderjuengere · Accepted solution]

Hi salah_m7,

you're looking for something like this?

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ok, GerdW was quicker ...

[salah_m7]

Thank you for all your answers

but I have LabVIEW 2010 I can't open LabVIEW 2011 files, I've tried to build a block diagram like you've mentioned in the pictures but I've some errors & I don't know why (in the bundle I can't put the cluster control)

[GerdW]

Hi salah,

use my snippet...

[salah_m7]

Thank you GerdW

Thank you for the link , this is the first time to use a snippet

[salah_m7]

I'm sorry, I've understood that we can convert a snippet to a vi xD

I've the same problem with the code because i can't put an empty cluster, if I create a constant cluster it came with 4 integers

[GerdW]

Hi salah,

the snippet has known problems with cluster constants. That's why I wrote my comments next to them...

[alexderjuengere]

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@GerdW wrote:

Hi salah,

use my snippet...

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o_O I never knew about this ... ! this is such a great feature!