histc removed by matlab

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topolowa 2016-10-20

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评论： topolowa 2016-10-20

Hi,

it seems that matlab decided to remove histc and suggests to use histcounts instead. I am often usin histc as follows : [bincounts,ind]= histc(___); It seems, that histcounts does not give indices ind as outputs. I use ind from histc in many codes for various applications, e.g. with accumarray.

Is there any function which would replace histc and give ind as output?

thanks

ina

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Answer 1

Steven Lord 2016-10-20

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The histc function still exists, but we recommend you use histcounts and/or histogram instead.

The third output from histcounts is the equivalent of the second output from histc, assuming you've modified how you specify your bins from bin centers (used by histc) into bin edges (used by histcounts) as described in the "Convert Bin Centers to Bin Edges" example on this page in the documentation.

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topolowa 2016-10-20

Perfect! thank you, I should have noticed bin value in the output... thank you very much

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Answer 2

John D'Errico 2016-10-20

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编辑：John D'Errico 2016-10-20

在 MATLAB Online 中打开

Why do people never read the help? The MATLAB gods put it there for a reason, of this I am sure. :)

 [N,EDGES,BIN] = histcounts(...) also returns an index array BIN, using 
    any of the previous syntaxes. BIN is an array of the same size as X 
    whose elements are the bin indices for the corresponding elements in X. 
    The number of elements in the kth bin is NNZ(BIN==k), which is the same 
    as N(k). A value of 0 in BIN indicates an element which does not belong 
    to any of the bins (for example, a NaN value).

Look at the THIRD output from histcounts. It does what you want. You can always discard the first and second return arguments if you only want the third.

[~,~,bins] = histcounts(stuff);