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bug #44909: closest in geomtools can be improved

Submitter:  gianluca de santis <gianlucadesi>
Submitted:  Thu 23 Apr 2015 03:45:13 PM UTC
   
 
Category:  Core Severity:  2 - Minor
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open
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Thu 23 Apr 2015 03:48:48 PM UTC, comment #1: 

In addition to my previous comment:
- a method farthest should be implemented, opposite to closest

gianluca de santis <gianlucadesi>
Group Member
Thu 23 Apr 2015 03:45:13 PM UTC, original submission:  

In geomtools the closest function uses the distance from one set of of N points to another set of M points, resulting in memory error (NxM distance array). As already done for distanceFromLine this function can be improved by:
- reducing the distance array from NxM to N by means of for loop
- adding multiprocessing

In attachment a possible implementation and example.
NB: in the example the multiprocessing is not implement when the second set is None (closest points within a single set).

gianluca de santis <gianlucadesi>
Group Member

 

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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-04-23 gianlucadesi Attached File- Added closest_performance_posted.py, #33747

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