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Hi there. Im trying to build a kd-tree for searching through a set of points, but am getting confused about the use of 'median' in the wikipedia article. For ease of use, the wikipedia article states the pseudo-code of kd-tree construction as:
function kdtree (list of points pointList, int depth)
{
…
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According to MSDN, Median is not available as an aggregate function in Transact-Sql. However, I would like to find out whether it is possible to create this functionality (using the Create Aggregate function, user defined function, or some other method).
What would be the best way (if possible)…
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Is there a way in sql (or tsql) to select the median of a column of numbers? I know you can sort by the column and pick the middle value, but it would be nice if there was a built-in function
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I'm a web application developer using my notebook as a standalone development environment (WAMP stack). I just switched from a Core2-duo Vista 32 bit notebook with 2Gb RAM and SATA HDD, to an i5-2520M Win7 64 bit with 4Gb RAM and 128 GB SDD (Corsair P3 128).
My initial experience was what I expected…
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Actually i have a little brain bender and and just can't find the right direction to get it to work:
Given is an IList<IDictionary<string, double>> and it is filled as followed:
Name|Value
----+-----
"x" | 3.8
"y" | 4.2
"z" | 1.5
----+-----
"x" | 7.2
"y" | 2.9
"z" | 1.3
----+-----
.…
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