# How to find a certain coordinate on path relative to another path?

I am learning AI and SVG animation. I got the SVG from flaticon. I would like to rotate the pointer around a point and make it look like the gauge is actually working. To achieve this, I need to find the coordinates on the indicator where the bases's midpoint is.

So.:

• I am rotating the pointer
• I know the base's midpoint
• Want to know which (`x`,`y`) is the base's midpoint on the indicator (`x'`, `y'`)

Finding the midpoint on the base is not hard, but how can I translate the coordinate to the pointer? (I will actually need to transform the indicator's coordinate to an `x'` and `y'` percentage afterwards to be able to make it responsive).

I guess I would need to figure out points a lot of times later, so I would like to be able to find such points fast.

Edit: I actually want to rotate the pointer in my animation (JavaScript). I can reference the pointer using the path's id, but to apply the transformation, I need a transformation origin. Which I cannot measure.

With Illustrator you don't need any coordinate, if we had to do illustrations based on coordinates it would be a madness ;-)

• Select the circle and the pointer
• Prss R to activate the Rotation Tool
• Pres Cmd + Y Mac or Ctrl + Y Win to activate the Outline View
• Click the circle center once to define the rotation center
• Click the pointer top point and rotate

To see the coordinates points:

• Pres Cmd + U Mac or Ctrl + U Win to activate the Smart guides
• Put the mouse over the circle center to see `x, y` coordinate numbers

If you need reference points between two shapes, use the Measure Tool (the ruler) and the Info Panel to see the coordinates info

• Updated my question, I need to `coordiantes` or the `percentages` of the midpoint Thanks for the tip btw, at least I can align it perfectly now. – appl3r Apr 21 at 9:03
• These are coordiantes relative to the whole document not the pointer. Do I need to copy and paste them to a new document, set the document size to match the path and do this? – appl3r Apr 21 at 9:17
• Answer updated. I showed you all the possible tools, I think there are no more options inside Illustrator – Danielillo Apr 21 at 9:21
• Measure tool works, I had to copy the base and the pointer to a new document though, because I had to use the measure tool from the top left corner and the selection outline (rectangle) disappears if I start using the measure tool and the circlepoint too, so I can only measure If I place new objects for help. Thanks! – appl3r Apr 21 at 9:36