structure indices in one line

Question

Robert 2012-10-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/49549-structure-indices-in-one-line

I would like to extract values from a structure. I know how to do it in two lines of code, but is it possible in one?

temp = urlAuthsMap.values;
temp{1}

My solution would have been something like [urlAuthsMap.values]{1} but that doesn't work.

>> temp = urlAuthsMap.values
Columns 1 through 11
      {1x4 cell}    {1x1 cell}    {1x3 cell}  ...
>> temp{1}
ans = 
      'S. A. Abraham'    'H. A. Bodner'    'C. G. Harrington'    'R. C. White Jr.'

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Answer 1

Matt Fig 2012-10-1

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https://ww2.mathworks.cn/matlabcentral/answers/49549-structure-indices-in-one-line#answer_60561

编辑：Matt Fig 2012-10-1

在 MATLAB Online 中打开

V = values(urlAuthsMap,KH); % KH is the key you want. See key.

From the link you showed above .... ;-)

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Robert 2012-10-19

Thanks a lot for your answer by email. i'll paste it in below

As far as I know, there is no way to index into newMap the way you want to.

keySet = {'Jun','Jul','Aug'}; valueSet = [ 69.9, 32.3, 37.3]; newMap = containers.Map(keySet,valueSet); values(newMap,keySet(1)) % This is how to do it.

As far as your other example, try this:

a{1} = [1,2,3] a{2}=[4,5,6]

a{2}(1)

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Answer 2

Image Analyst 2012-10-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/49549-structure-indices-in-one-line#answer_60548

编辑：Image Analyst 2012-10-1

在 MATLAB Online 中打开

urlAuthsMap.values = {'S. A. Abraham', 'H. A. Bodner', 'C. G. Harrington', 'R. C. White Jr.'}
% Here's how to do it.
caName1 = urlAuthsMap.values(1) % This is a cell.
strName1 = urlAuthsMap.values{1} % This is a string.

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Robert 2012-10-1

Thanks, I've tried this but am getting errors for both. I realized that maybe my map object is special and doesn't work like a normal cell array. Any ideas?

urlAuthsMap.values{1} Error using containers.Map/values Invalid input for argument 2 (rhs2): Value must be 'cell'.

>> urlAuthsMap.values(1) Error using containers.Map/values Invalid input for argument 2 (rhs2): Value must be 'cell'.

http://www.mathworks.com/help/matlab/ref/containers.mapclass.html

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