Words to Number

版本 2.4.4 (47.1 KB) 作者: Stephen23
Convert English number name/s written in a string to numeric value/s (GB/IN/US).
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WORDS2NUM converts text with number value/s written in English words to a numeric vector: for example the text 'one thousand and twenty-four' is converted to the scalar numeric 1024. WORDS2NUM accepts a string containing zero or more number substrings, and returns a numeric vector with one element for each detected number substring. Options allows the user to select:
  • the output vector's numeric class: double, single, uintX or intX.
  • upper / lower / title / sentence case.
  • the use of spaces between words.
  • the use of a comma between magnitude groups.
  • the use of a hyphen between tens and ones.
  • the use of 'and' before the tens/ones (required in British and Commonwealth English).
  • whitespace character/s.
  • the numbering scale: short / long / Indian / Peletier / Rowlett / yllion.
Bonus Functions / Scripts
  • WORDS2NUM_TEST contains thousands of test cases.
  • WORDS2NUM_DEMO compares the output of WORDS2NUM against real-world examples.
Reverse Conversion
http://www.mathworks.com/matlabcentral/fileexchange/47221-number-to-words
Examples
>> words2num('zero') % or "zero"
ans = 0
>> words2num('One Thousand and TWENTY-four')
ans = 1024
>> words2num('One_Thousand_and_TWENTY-four', 'white','_')
ans = 1024
>> words2num('One Thousand and TWENTY-four', 'case','lower')
ans = 4
>> words2num('One Thousand and TWENTY-four', 'case','upper')
ans = 20
>> words2num('One Thousand and TWENTY-four', 'case','title')
ans = 1000
>> words2num('One Thousand and TWENTY-four', 'hyphen',false)
ans = [1020,4]
>> words2num('One Thousand and TWENTY-four', 'and',false)
ans = [1000,24]
>> words2num('One Thousand and TWENTY-four', 'suffix','-')
ans = 1020
>> [num,spl] = words2num('Negative thirty-two squared is one thousand and twenty-four.')
num = [-32,1024]
spl = {'',' squared is ','.'}
>> [num,spl] = words2num('one hundred and twenty-three pounds and forty-five pence')
num = [123,45]
spl = {'',' pounds and ',' pence'}
>> [num,spl] = words2num('pi=threepointonefouronefiveninetwosixfivethreefiveeight')
num = 3.14159265358
spl = {'pi=',''}
>> [num,spl] = words2num('One Hundred and One Dalmatians')
num = 101
spl = {'',' Dalmatians'}
>> words2num('one hundred and seventy-nine uncentillion')
ans = 1.79e+308
>> words2num('one hundred and eighty uncentillion') % >realmax
ans = Inf
>> words2num('one hundred and eighty uncentillion', 'class','int64')
ans = +9223372036854775807
>> words2num(num2words(intmin('int64')),'class','int64')
ans = -9223372036854775808
>> words2num('one point zero zero two zero zero three trillion')
ans = 1002003000000
>> words2num('one trillion, two billion, three million')
ans = 1002003000000
>> words2num('one trillion, two billion three million', 'comma',true, 'and',true)
ans = [1002000000000,3000000]
>> words2num('one trillion, two billion three million', 'comma',false)
ans = [1000000000000,2003000000]
>> words2num('one million million', 'mag','compound')
ans = 1000000000000
>> words2num('four billion', 'scale','short')
ans = 4000000000
>> words2num('four thousand million', 'scale','long')
ans = 4000000000
>> words2num('four arab', 'scale','indian')
ans = 4000000000
>> words2num('four milliard', 'scale','peletier')
ans = 4000000000
>> words2num('four gillion', 'scale','rowlett')
ans = 4000000000
>> words2num('FORTY MYLLION', 'scale','yllion')
ans = 4000000000
>> words2num('Negative Infinity')
ans = -Inf
>> words2num('Not-a-Number')
ans = NaN

引用格式

Stephen23 (2024). Words to Number (https://www.mathworks.com/matlabcentral/fileexchange/52925-words-to-number), MATLAB Central File Exchange. 检索时间: .

MATLAB 版本兼容性
创建方式 R2010b
与 R2009b 及更高版本兼容
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版本 已发布 发行说明
2.4.4

* Documentation improvements.
2.4.3

* Add more testcases
* Add reference to SCU
* Add ARBSORT example
2.4.2

* option parsing improvements.
* add format reference.
2.4.1

* Add "IN" to summary.
2.4.0

* Faster option parsing.
* Add more testcases.
* Add "indian" scale.
2.3.1

* Improve option parsing.
2.3.0

* Add 3rd output: significant digits.
* Add 4th output: options structure.
* More testcases.
2.2.2

* Update description.
2.2.1

* Revise title and summary
2.2.0

* Accepts string or char vector input arguments.
* Add testcases.
2.1.0

* Add error IDs.
* Make compatible with R2009b, possibly earlier too (untested).
2.0.0

* Improve options handling.
* Rewrite regular expression: simpler and more accepting of non-standard numbers, uses nested functions called from dynamic regular expressions.
1.4.0.0

* Check for cell array optional inputs.
1.3.0.0

* Change HTML documentation filename.
* Rename "myriad" scale to "knuth".
* Change "mult" option 'ordered' to 'simple'.
* Improve fraction conversion algorithm.
* Include HTML _DOC file in zip.
1.2.0.0

* Add options <prefix> and <suffix>.
* Simplify multiplier parsing.
* Improve documentation.
* Consistent internal variable names.
1.1.0.0

* replace non-ASCII character with ASCII one in RegularExpression.
1.0.0.0