# How to join the subelements of a cell?

2 views (last 30 days)
GEORGIOS BEKAS on 26 Jan 2018
Commented: Domanic on 26 Jan 2018
I am trying to express all sentences in one cell with string subelements.
s='I am George. John is there? Ana is around! Are you mad?'
[y,matches] = strsplit(s,{'.','?','!'})
for i = 1:length(matches)
y{i}=[y{i},matches{i}]
end
y=y(~cellfun('isempty',y))
Matt J on 26 Jan 2018
Don't think you finished your question (because I'm not sure what it is). If you're trying to rejoin all the sub-strings in y, see my answer below.

Matt J on 26 Jan 2018
Edited: Matt J on 26 Jan 2018
s=[y{:}]
Steven Lord on 26 Jan 2018
This is what I receive when I run the code you posted followed by Matt's suggestion.
s = 'I am George. John is there? Ana is around! Are you mad?'
[y,matches] = strsplit(s,{'.','?','!'})
for i = 1:length(matches)
y{i}=[y{i},matches{i}]
end
y=y(~cellfun('isempty',y))
s2 = [y{:}]
whos s2
s2 =
'I am George. John is there? Ana is around! Are you mad?'
Name Size Bytes Class Attributes
s2 1x55 110 char
What exactly do you need/want/expect s2 to be for this example? Be specific about the type and size you expect s2 to be and the contents you expect s2 to contain.

Domanic on 26 Jan 2018
Edited: Domanic on 26 Jan 2018
To join elements of the cell array, y, you can use:
y = cell2mat(y);
or
y = {cell2mat(y)};
for a cell array.
To more generally achieve what you're trying to do, you can use regular expressions:
expression = '(?<=\W)\s'; % Expression to find white space following punctuation
strsplit(s,expression,'delimitertype','regularexpression'); % split string around result of regexp
##### 2 CommentsShowHide 1 older comment
Domanic on 26 Jan 2018
expression = '(?<=\W)\s';
y = strsplit(s,expression,'delimitertype','regularexpression');
y = {cell2struct(y,'substrings')};
where the strings are accessed as:
y{1}.substrings
or
y{1}.substrings(1)
not sure why you'd want this, though.

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