Author: Wayne (wsr at nih.gov) History: 2007/05/18: First version
2010/05/20: Updated to use an Overlay
Requires: ImageJ 1.43u or later Source: Concentric_Circles.java Installation: Download Concentric_Circles.class to the plugins folder, or subfolder, restart ImageJ, and there will be a new "Concentric Circles" command in the Plugins menu, or submenu. Description: This plugin draws concentric circles in a non-destructive overlay. The number of circles, the center, and the radii of the inner and outer circles are specified in a dialog box. If there is an area or line selection, the initial dialog box values are based on that selection. This overlay does not affect measurements of pixel intensity of selections that lie along the circles.
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