Manipulate/Locator bug
- To: mathgroup at smc.vnet.net
- Subject: [mg80040] Manipulate/Locator bug
- From: Mariusz Jankowski <mjankowski at usm.maine.edu>
- Date: Sat, 11 Aug 2007 02:08:34 -0400 (EDT)
Hi, a couple of weeks ago I posted a question about a LocatorPane problem I was seeing. Here is another manifestation of the same using the popular Manipulate command. This is a bug that may kill your kernel so beware. Following the documentation I entered: Manipulate[ Framed[Graphics[]], {{u, {}}, Locator, LocatorAutoCreate -> All}] Now, click once inside the frame - a Locator does *not* appear. Click again, a Locator will appear as described in the documentation. Continue clicks and alt-clicks and everything seems to work. Finally, go to the control button in the upper right-hand corner of the Manipulate panel and select Paste Snapshot. You will either kill the kernel or a DynamicModule expression will get pasted. In the latter case note the incorrect coordinates of the first element of the list of Locators. Enjoy, Mariusz