Extract Point from Circle

[[Lu...]]

Hello. I am wondering if it is possible to extract a single point from a circle path so I can check the X and Y values of the single point. I created a point and did "recall feature points" then I tried right clicking on the circle path and doing "open" and it does nothing. Thank you.

[[Je...]]

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Hey Lukas.

Yes, what you are asking is very possible in Calypso. There are quite a few ways to export a single point from a circle path.

I'll give you a workflow for doing so, but there are other options as well. Seriously, there's at least eight ways to do this.

If it wasn't Friday afternoon and I had more time, I'd explain more. If you'd like more help on this, you can PM me in this forum for my contact info for a Teams call or phone call sometime.

Keep in mind that for any measurement task you need three things:

1. Nominal definition of the feature of interest
2. Actual (measured) value of the feature of interest
3. A way to evaluate the deviation from the measured feature to the nominal feature.

It's also important to be cognisant that evaluation occurs within a specific alignment, which in Calypso is usually a secondary alignment (best) or base alignment (less-than-best) or the machine coordinate system (task-specific, uncommon).

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Add Range Limits Method:
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1. Create a blank point feature, which will be a point container for the single point extracted from the scanned circle.

2. Using the dropdown menu in the point's feature window select "Recall Feature Points."

3. Find the circle feature you want to extract from and RIGHT-CLICK on it. A context menu will appear. Choose "Add Range Limits".

4. This is where things get interesting. You can grab your single point several ways, but one method is to click on the sneaky little button on the menu bar called "Select Actual Point via Mouse Cursor."

5. Hold down left-click and drag a box around the point you want to capture (see image below). This just created a three-dimensional box around your point. To view the box, drop down the "Alignment" window on this screen and choose Base Alignment. This will show you the 3D capture box for your point as well as list its x-y-z coordinate description. You can adjust the volume of the box by changing the value in the "Box Distance" field, and you can adjust its position by changing the Lower Box Limit and Upper Box Limit values. These work a lot like the Clearance Safety Cube in Calypso.

6. Click okay.

7. On the recall feature points window, check the box for "Re-calculate Nominal Geometry". BEWARE: If you have actual measured data loaded for the circle feature, the nominal value of the single point will be set in reference to the actual value. If you choose "Delete Actual Values" from the circle feature before checking "Re-calculate Nominal Geometry," the nominal point information will be populated based on where the measurement strategy for the circle says that the scanned point would land. If you have measured data that you want to evaluate, make sure you have saved the measuring points in Calypso before deleting actual values. Also, you can always re-adjust the nominal values for your single point in its feature window.

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8. Set up your measurement characteristic per your intended process. If you want to use the polar position radius characteristic, you can click on the representation button in the feature's window (in 2024 Version 7.8) and select cylinder coordinates. Then click the checkbox next to "R" in the feature's window and set the tolerances as appropriate. This characteristic will now show up on your characteristics tab.

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As I mentioned, there are many, many other ways to do this. I often have to export point coordinate data from previously scanned features, and there are a zillion ways to do this and many customizable export types in Calypso.

I hope that helps. Feel free to message me if you need more help on this.

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[[Lu...]]

Thanks so much. I'm running 2023 and I don't see the "Representation" button. Is there any way to find polar coordinates of a point in my version?

[[Je...]]

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Hey Lukas.

Yes, the Features Representation window can be accessed from the Resources drop-down menu or from a button on the toolbar:

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