CODEWITHSUNDEEP
matlab
Varun
Varun

Reputation: 901

How to remove characters from the end of the string?

I have a string variable name having value abcd.jpg.
How can I remove the .jpg from that string?

Upvotes: 0

Views: 8535

Answers (4)

Suneth Attygalle
Suneth Attygalle

Reputation: 179

Since you are not asking for any kind of checking of the input, then you can simply use the end feature of arrays in matlab to index backwards from the end of the array to ignore the last four elements as follows:

name = 'abcd.jpg' % original name
namewithoutfiletype = name(1:end-4) % name without the last four characters

Upvotes: 2

Luis Mendo
Luis Mendo

Reputation: 112659

For the general case (the file extension may have any number of characters, and the file name may contain dots):

>> name = 'example.file.html';
>> result = regexprep(name, '\.[^\.]*$', '')

result =

example.file

See regexprep documentation or ask me if you're unsure how this works.

Upvotes: 2

LeonardBlunderbuss
LeonardBlunderbuss

Reputation: 1274

This should do it: 

if(length(name) > 4)
    if(name(length(name)-3:length(name)) == '.jpg')
        name = name(1:length(name)-4);
    end
end

Alternatively, if you want to look for any 3 character file extension at the end of a string, you could just check for a . character at position length(name)-3, like this:

if(name(length(name)-3) == '.')
    name = name(1:length(name)-4);
end

You can also use the fileparts function as Daniel mentioned like this:

[~,name,~] = fileparts(name)

Upvotes: 2

Daniel
Daniel

Reputation: 36710

For this special case, there is the function fileparts.

Upvotes: 3

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