MATLAB: How to create an empty Map container with a ‘KeyType’ other than the default ‘char’ in MATLAB 7.7 (R2008b)

containers.mapMATLAB

I would like to be able to create an empty Map container with a 'KeyType' other than the default 'char' type.

Best Answer

This enhancement has been incorporated in Release 2010a (R2010a). For previous product releases, read below for any possible workarounds:

The ability to create empty Map containers with 'KeyType' other than the default is not available in MATLAB.

To work around this, one can create a non-empty container with a desired 'KeyType' and then remove the values, as follows:

m = containers.Map(uint32(1), 1) % KeyType is uint32.
remove(m,1)

Related Solutions

MATLAB: How to retrieve the Key which belongs to a specified Value using the array Containers Map in MATLAB 7.7 (R2008b)

To retrieve the Key which belongs to a specified Value of a Containers Map array the CELLFUN function can be used. An example is shown below:

%%Create Containers Map
ticketMap = containers.Map(...
      {'jan', 'feb', 'march'}, ...
      {10, 20, 30});
%%Retrieve specified Key wrt defined Value using CELLFUN
testvalue = 30;
testind = cellfun(@(x)isequal(x,testvalue),values(ticketMap));
testkeys = keys(ticketMap);
msg_key = testkeys(testind)

MATLAB: Am I unable to zoom in on the map that is shown from the DEMDATAUI command

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

As a possible workaround, you can use the following code:

set(0,'ShowHiddenHandles','On')
zoom

You should now be able to zoom in on the map.

Best Answer

Related Solutions

MATLAB: How to retrieve the Key which belongs to a specified Value using the array Containers Map in MATLAB 7.7 (R2008b)

MATLAB: Am I unable to zoom in on the map that is shown from the DEMDATAUI command

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