MATLAB: Extreact Information from a String

MATLABstring

Hello, I do have the following Code

d = dir('/home/user/Documents/Data*.inp');
names = {d.name}

which gives me an Array of Strings.

names(1) is like = "Data_c11_t3.322111_id01111_Units.inp"

names(2) is like = "Data_c101_t4.32111_id01112_Units.inp"

etc.

Now I want to extract the time, which is in the name after "t". How can I extract the time in such a format?

Any suggestions?

Best Answer

regexp would be the best idea, I've no big experiences with it, I'll give it a shot anyway,

 names = {'Data_c11_t3.322111_id01111_Units.inp';'Data_c101_t4.32111_id01112_Units.inp'};
 t = regexp(names,'[0-9]+\.+[0-9*]+','match')

Related Solutions

MATLAB: Help to solve a regexp problem

Test this

>> str = sprintf('  %%this is a comment\n    %%and this\n');
>> cac = regexp( str, '[ ]*%[^\n]+', 'match' )
cac = 
    '  % this is a comment'    '    % and this'
>> whos cac
  Name      Size            Bytes  Class    Attributes
  cac       1x2               294  cell

MATLAB: Using regular expressions to identify names and unit from string

You could do it in two steps, like this:

str='name1/name2 [C]'
%%Extract unit, if there is one
exp=']|[|}|{';
id=regexp(str,exp);
if isempty(id)==0
    unit=str(id(1)+1:id(2)-1)
end
%%Extract name
exp='/| ';
id=regexp(str,exp);
if numel(id)==2
    name1=str(1:id(1)-1)
    name2=str(id(1)+1:id(2)-1)
else
    name1=str(1:id(1)-1)
    name2=str(id(1)+1:end)
end

If you do not want to save whatever is within the curly brackets as units, then remove those from the first expression.

Best Answer

Related Solutions

MATLAB: Help to solve a regexp problem

MATLAB: Using regular expressions to identify names and unit from string

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