Delete close, but not identical elements in an array
- To: mathgroup at smc.vnet.net
- Subject: [mg123356] Delete close, but not identical elements in an array
- From: Peter Rodenbach <peter.rodenbach at googlemail.com>
- Date: Sat, 3 Dec 2011 04:12:56 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Hi, I have the problem that I have to indentify peaks in an 2D array. I can do this by Ordering[] the entries in the Flatten[] list. Then I indentify the positions of the peaks in the array and write them into a list. An example I work on in an 512 x 512 Pixel array: Peaks={{229,170},{119,265},{331,202},{118,264},{314,245}} As you can see from those 5 peaks, Number 2 and 4 belong to the same peak. As I have to count the data at that positions and compare them, I have to get rid of the peak postions that neighbor each other, as they actually belong to the same peak. What I want now is: have Mathem. evaluate the positions in the list and delete those which are +-10 pixels around any other. So the list would look like Peaks={{229,170},{119,265},{331,202}, {314,245}} afterwards. Thanks for the help!!
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- From: Bob Hanlon <hanlonr357@gmail.com>
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