The theory of "_mergesimpts" of builtin functions.
13 views (last 30 days)
Show older comments
I'm trying to learn the theory of the function "griddata",and in the file "griddata.m",I found some codes like: xyv = builtin('_mergesimpts', [y, x, v], [myepsy, myepsx, Inf], 'average'); I cant find the source code or theory of "_mergesimpts",can u explain the theory of it please? Thanks a lot.:)
0 Comments
Answers (2)
Walter Roberson
on 30 Mar 2016
By context I can tell that it looks for points whose x is closer than myepsx and whose y is closer than myepsy, and that if it finds them then it replaces the pair with a single point whose value is the average of the values at the other two points.
I do not know how it handles "lines" of points, A close to B close to C but A not close to C.
1 Comment
Peng Liu
on 22 Aug 2016
It is an undocumented built-in function, which finds unique elements/rows within a specified tolerance. You may find a detailed introduction about this functon: http://stackoverflow.com/questions/1988535/return-unique-element-with-a-tolerance
Matlab 2015a introduced a documented built-in function, uniquetol, to achieve a similar task.
0 Comments
See Also
Categories
Find more on Regression in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!