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histc

Histogram bin counts (not recommended; usehistcounts)

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histcis not recommended. Usehistcountsinstead.

For more information, including suggestions on updating code, seeReplace Discouraged Instances of hist and histc.

Syntax

bincounts = histc（x，binranges）
bincounts = histc（x，binranges，昏暗）
[bincounts,ind]= histc(___)

Description

example

bincounts= histc(x,binranges)counts the number of values inx在每个指定的垃圾箱范围内。The input,binranges, determines the endpoints for each bin. The output,bincounts, contains the number of elements fromxin each bin.

  • Ifx是一个向量，然后histcreturnsbincountsas a vector of histogram bin counts.

  • Ifx是矩阵，然后histc沿着每一列运行x并返回bincountsas a matrix of histogram bin counts for each column.

To plot the histogram, usebar(binranges,bincounts,'histc').

bincounts= histc(x,binranges,dim)operates along the dimensiondim.

example

[bincounts,印第安]= histc(___)returns印第安，数组大小与x指示每个条目中的箱号xsorts into. Use this syntax with any of the previous input argument combinations.

Examples

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打开实时脚本

Initialize the random number generator to make the output ofrandnrepeatable.

rng(0,'twister')

Definexas 100 normally distributed random numbers. Define bin ranges between -4 and 4. Determine the number of values inx在每个指定的垃圾箱范围内。返回每个垃圾箱中的元素数量bincounts.

x = randn(100,1); binranges = -4:4; [bincounts] = histc(x,binranges)
bincounts =9×10 2 17 28 32 16 3 2 0

To plot the histogram, use thebarfunction.

figure bar(binranges,bincounts,'histc')

打开实时脚本

Defined年龄as a vector of ages. Sort年龄进垃圾箱不同范围between 0 and 75.

年龄= [3,12,24,15,5,74,23,54,31,23,64,75];binranges = [0,10,25,50,75];[bincounts，ind] = histc（年龄，binranges）
bincounts =1×52 5 1 3 1
ind =1×121 2 2 2 1 4 2 4 3 2 4 5 ⋯

bincountscontains the number of values in each bin.印第安印第安icates the bin numbers.

Input Arguments

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要排序的值, specified as a vector or a matrix. The bin counts do not include values inx那是NaNor that lie outside the specified bin ranges. Ifxcontains complex values, thenhistc忽略虚构部分，仅使用真实零件。

Data Types:single|double|int8|INT16|INT32|int64|uint8|UINT16|uint32|uint64|logical

Bin ranges, specified as a vector of monotonically nondecreasing values or a matrix of monotonically nondecreasing values running down each successive column. The values inbinrangesdetermine the left and right endpoints for each bin. Ifbinrangescontains complex values, thenhistc忽略虚构部分，仅使用真实零件。

Ifbinranges是矩阵，然后histc通过使用向下连续的列来确定bin范围。每个垃圾箱包含左端点，但不包括右端点。最后一个bin由标量值组成，等于最后值binranges.

For example, ifbinrangesequals the vector[0,5,10,13], thenhistccreates four bins. The first bin includes values greater than or equal to 0 and strictly less than 5. The second bin includes values greater than or equal to 5 and less than 10, and so on. The last bin contains the scalar value 13.

Data Types:single|double|int8|INT16|INT32|int64|uint8|UINT16|uint32|uint64|logical

Dimension along which to operate, specified as a scalar.

Data Types:single|double|int8|INT16|INT32|int64|uint8|UINT16|uint32|uint64|logical

Output Arguments

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Number of elements in each bin, returned as a vector or a matrix. The last entry inbincountsis the number of values inx等于最后一个条目binranges.

bin索引编号，返回为向量或矩阵，大小与x.

提示

  • 如果值在xlie outside the specified bin ranges, thenhistcdoes not include these values in the bin counts. Start and end thebinrangesvector with-inf和infto ensure that all values inxare included in the bin counts.

Extended Capabilities

See Also

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在R2006a之前引入

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