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10-19-2001 07:21 AM

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10-19-2001 08:27 AM

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jonas, Can you use an intensity graph: intensity = amplitude, X & Y axis = z & angle? Richard.

10-19-2001 09:06 AM

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Did I manage to make it a little bit more clear now?

thanks anyway, and maybe you have another suggestion?

-Jonas

10-22-2001 05:34 AM

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10-19-2001 10:54 AM

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Here is what I would do. If you cut your cylinder open along the 0 degree angle line you get a rectangle. Now you can orient this rectanlge so that X will be represented by your former Z-coordinate and Y will be the former angle in your cylinder (0-360 degrees). If you then use an intensity plot in LabVIEW you can use the intensity to represent your smpled data on this 2D representation of your cylinder. I hope this helps. /Mikael

10-22-2001 01:18 AM

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Thanks for your answer, however, I really need to have a cylinder shaped plot since I expect the data (i.e. the radius of the cylinder depending on the height, z and the angle, theta) to be be quit irregular. I need the 3d plot in order to really understand the results I think.

Is there no simple way to do this? I've tried the parametric surface plot, but then I have difficulties arranging the data so that it fit the required input for the VI.

Help me!!

thanks again!

10-19-2001 02:00 PM

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It seems like you are doing a C-scan (using a transducer? ) The depth (data)into the cylinder will be your intensity, your indexing axis is z and your scanning axis is Theta, your intensity x-axis Chart will be in degrees because you are "stepping" ( every say: 1 degree). The Z-axis, (in your email becomes the Chart Y axis .

'ope.z.

10-24-2001 09:41 AM

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I think what you want is a 3D plot of a cylinder. I have attached an example using a parametric 3D plot.

You will probably want to duplicate the points for the first theta value to close the cylinder. I'm not sure what properties of the graph can be manipulated to make it easier to see.

Bruce

Bruce Ammons

Ammons Engineering

Ammons Engineering

10-24-2001 12:15 PM

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Here is a better example. I used cylindrical coordinates, and controlled the shading with a custom colormap. It looks a lot better than the default settings.

Bruce

Bruce Ammons

Ammons Engineering

Ammons Engineering

10-25-2001 01:43 AM

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this was by far the best fit to my problem...tried almost the same solution myselfm but the surface of the plot always looked pretty bad...this example is something I can use!

Thanks again

/Jonas