What is this hds folder missing in 2017a?

I was running 2016b, but recently install 2017a. Then, I get the error message that the path to toolbox\matlab\hds does not exits. in 2016b the folder is there. It includes these functions: hdsCatArray, hdsGetSize, and so on. In 2017a the folder is not there. Is this an old AddOn? Discontinue functions? Thanks

Answer 1

[Varun Gunda]

HDS toolbox is not a product of MathWorks. Its a third party submission. More information about this toolbox can be found here:

https://www.openhub.net/p/hds-toolbox

You can download the toolbox from github, following the procedure given here.

[Walter Roberson]

There is a third-party HDS toolbox at the place you indicate, but it is not the one being discussed. The toolbox/matlab/hds folder is a Mathworks package -- Mathworks copyrights and all.

When I search several MATLAB releases for reference to hds, I only find self-references, not any calls into it. It looks as if perhaps it has not actually been used for a number of years but they just got around to removing it. (Perhaps some third-party tool used it.)

[Varun Gunda]

Can you share the information on where you found the MathWorks copyright? Also the links of documentation you have mentioned!

[Walter Roberson]

Look at the code in any file in the toolbox/matlab/hds directory in R2016b or earlier to see Mathworks's copyright on their Hierarchical Data Storage routines. The function names are not the same as the package you linked to - the third party one appears to be independent of the Mathworks one.

The only Mathworks documentation I have found for the routines is the comments in the source code.

[Walter Roberson]

For example /Applications/MATLAB_R2011a.app/toolbox/matlab/hds/hdsCatArray.m contains in part,

%   Copyright 1986-2004 The MathWorks, Inc.
%   $Revision: 1.1.6.2 $  $Date: 2005/12/22 18:15:17 $

By R2016b the revision number information was gone, but the 1986-2004 copyright remained.

@hds/@spreadsheet/spreadsheet.m was changed as late as 2014 copyright, and @hds/@TestLog/TestLog.m as well, but otherwise almost all the rest are 2004, 2005, or (sometimes) 2007.