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How can I set a dynamic global via a Locator

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  How can I set a dynamic global via a Locator "Christopher O. Young" <cy56@comcast.net> - 2011-05-07 10:23 +0000

#2150 — How can I set a dynamic global via a Locator

This works, outputting the value set by the draggable locator point. But I
have to initialize s as a point first. I'm not sure why.

s = {0, 0}

Dynamic[s]


Graphics[
 Locator[Dynamic[s]]
]

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