How to use Unicode numeric values in regexprep?

How can "Häagen-Dasz" be converted to "Haagen-Dasz" using Uincode numeric values? For example,

regexprep('Häagen-Dasz','ä','A')

works fine, but

regexprep('Häagen-Dasz','\x{C4}','a')

does not. Here, the hexadecimal \x{C4} stands for [latin capital letter a] with diaeresis, i.e. [ä].

[VBBV]

I am not sure if i understand your question right, but Read this answer below

https://www.mathworks.com/matlabcentral/answers/2004827-what-unicode-characters-can-be-rendered-in-the-command-window

Answer 1

[Yash]

Hi Vlad,

'\x{C4}' represents the Unicode character Ä (Latin Capital Letter A with Diaeresis) in hexadecimal notation.

If you want to replace ä (Latin Small Letter A with Diaeresis), you should use \x{E4}, which is its Unicode hexadecimal representation.

In the context of your question, you're looking to replace ä with a. The correct approach would be to use the Unicode numeric value for ä in the regex and replace it with a. Here is the code:

regexprep('Häagen-Dasz','\x{E4}','a')

ans = 'Haagen-Dasz'

Hope this helps!

Answer 2

[Stephen23]

inp = 'Häagen-Dasz';
baz = @(v)char(v(1)); % only need the first decomposed character.
out = arrayfun(@(c)baz(py.unicodedata.normalize('NFKD',c)),inp) % remove diacritics.

out = 'Haagen-Dasz'

Read more:

https://docs.python.org/3/library/unicodedata.html

https://stackoverflow.com/questions/16467479/normalizing-unicode

Answer 3

[VBBV]

regexprep('Häagen-Dasz','ä','A')

ans = 'HAagen-Dasz'

regexprep('Häagen-Dasz','ä','\x{C4}')

ans = 'HÄagen-Dasz'

[VBBV]

regexprep('Häagen-Dasz','\x{e4}','a')

ans = 'Haagen-Dasz'

[VBBV]

The unicode character for small a is \x{e4}