Get the value of property from bagOfWords

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Phil_911 2020-7-15

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https://ww2.mathworks.cn/matlabcentral/answers/565298-get-the-value-of-property-from-bagofwords

评论： Walter Roberson 2020-7-15

采纳的回答： Walter Roberson

Hi,

I have got following bagOfWords and need to extract the number of words into an arrary. How is that possible?

bagOfWords with properties:

Counts: [1×68 double]

Vocabulary: [1×68 string]

NumWords: 68

NumDocuments: 1

Thanks in advance

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Phil_911 2020-7-15

docum is a sting with 68 words and the code for bOW is the follwoing:

bag = bagOfWords(docum)

And the result is as stated:

bag =

bagOfWords with properties:

Counts: [1×68 double]

Vocabulary: [1×68 string]

NumWords: 68

NumDocuments: 1

Thanks in advance.

Phil_911 2020-7-15

And I need to extract the value 68 of the bag of Words for further calculations.

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Answer 1

Walter Roberson 2020-7-15

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/565298-get-the-value-of-property-from-bagofwords#answer_466007

在 MATLAB Online 中打开

bag.NumWords

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Phil_911 2020-7-15

Thanks!

Walter Roberson 2020-7-15

在 MATLAB Online 中打开

data = cat(1, image_patches,labels);

That code is overwriting all of data each iteration.

It looks to me as if data will not be a vector, but I do not seem to be able to locate any hellopatches() function so I cannot tell what shape it will be. As you are not doing imresize() I also cannot be sure that all of the images are the same size, so I cannot be sure that data will be the same size for each iteration. Under the circumstances you should be considering saving into a cell array.

Note: please do not post the same query multiple times. I found at least 3 copies of your query :(

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