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26 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	Ok, Shame on me, there is a method "kdtree_delete" that needs to be called for releasing the memory again.
22 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	On my System (64bit Ubuntu, Matlab R2009a) there seems to be a memory leak with this implementation: for i = 1:1000 tree = kdtree_build(rand(1000,1)); end grabs around 140MB of system memory, according to top. That is never released again. Do I have to release the resources myself in some way or might this be a bug? I really depend on this implementation, so you would do me a great favour by having a look at it...
15 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	Thanks a lot for this contribution - I've been using it a lot recently and it just works perfectly :)
09 Sep 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	jin, sun	kdtree_build.cpp D:\kdtree1.2\kdtree\KDTree.h(144) : error C2374: 'dIdx' : redefinition; multiple initialization D:\kdtree1.2\kdtree\KDTree.h(137) : see declaration of 'dIdx' D:\kdtree1.2\kdtree\KDTree.h(225) : error C2371: 'i' : redefinition; different basic types D:\kdtree1.2\kdtree\KDTree.h(223) : see declaration of 'i' D:\MATLAB\R2008A\BIN\MEX.PL: Error: Compile of 'kdtree_build.cpp' failed. ??? Error using ==> mex at 207 Unable to complete successfully.
27 Aug 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	ming, lin	great work! note: compile with visual c++ 6.0 will cause fatal error on my computer. However, VS2008 works fine.
07 Jul 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	Tagliasacchi, Andrea	1) The C++ library MyHeap.h contains both implementation for MaxHeap and MinHeaps. All you need is to create interface functions along the lines of those I created for the MinHeaps. 2) This would require to add a function in MyHeaps.h but I don't see why not, it should be a very easy operation to do. 3) Position in the tree? Lowest Level?
07 Jul 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	Yates, Kit	This seems like an excellent set of files. A couple of questions. 1) Is it possible to reverse the order of the indexing in order to have the smallest elements at the top (other than the obvious: making all the entries negative when entering them and then converting them back to positive when using them)? 2)Is it possible to access the cost of an element from the priority queue by inputting its index in some way. 3)On a similar note is it possible to access the index and cost of an element by somehow inputting its position in the tree. i.e. would it be possible to access all the elements on the lowest level. Thanks, Kit.
17 May 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Brucker, Florian	Worked perfectly out of the box after compiling in MATLAB as specified by the docs. Thanks a lot! One little thing: The help for kdtree_k_nearest_neighbors says that the neighbors are returned with increasing distance order. This seems to be incorrect, my experiments tell me they are returned in decreasing distance order (e.g. if the point itself is part of the tree, then it is returned as the last of the neighbors, not as the first).
03 Apr 2009	gif_add_frame creates a gif animation of snapshots Author: Andrea Tagliasacchi	Michael	Excellent program. well done.
30 Mar 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Tagliasacchi, Andrea	kdtree_build() returns a pointer to the kdtree. That number needs to be fed as first argument to every other query method. I haven't tried it on older versions of Matlab but I haven't used any of the new releases functionality.
07 Feb 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Jian, Bing	How to use the result returned by kdtree_build() which is a double number on my MATLAB7.5.0? Does your program require at least MATLAB7.6? Thanks!
03 Feb 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Tagliasacchi, Andrea	Thanks Kigor, I found a simple bug in the kdtree_nearest_neighbor data conversion. The query was executed MxN times instead of M times; given the query matrix Q is of size(M,N). The updated kdtree_nearest_neighbor.cpp file can be found at https://latis.cs.sfu.ca/svn/users/ata2/matlibs/kdtree/ The bug will be corrected in the next release
21 Jan 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Karic, KIgor	For some reason kdtree_nearest_neighbor takes extremely long time to finish. Are others having the same problem or am I the only one?
03 Dec 2008	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Giaccari, Luigi	The most complete Kd-tree on Matlab exchange. Thank you Andrea
30 Sep 2008	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Tam, Gary	Thank you! Work out of the box.
13 Sep 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	G, P	The sphere example proposed in the code does not work with Matlab 7.0.0.19920 (R14) and 7.0.4.352 (R14). There may be a problem between surf objects and hgtransform. It works properly with mesh and surface objects. Great work, thanks.
12 May 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	Tagliasacchi, Andrea	Thanks for the observation anyway. I took a look at the code again and even though Noh2 observation was correct, there was a similar bug. The "rotation direction" was embedded in model space using the inverse of the current rotation matrix (taken from graphic context) and not the one of the original model. I will upload the final version. There was also a vector normalization missing that might have caused other issues.
12 May 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	Noh2, Noone U.	Actually that is not true. If you check, the rotation is applied to the model which is "saved" in M_previous in the moment the first mouse click take place. That doesn't change anymore during dragging.
30 Apr 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	Noh, Noone U.	The cause of your "bug" is likely that at each step you rotate the object that was rotated in the last step. Each rotation introduces a little bit of round-off errors that are being magnified by doing it a zillion times. Instead, you should always make the rotations with respect to the original (unrotated) object.
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