Remove first characters from a string

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Melissa Ette
Melissa Ette 2020-10-26
评论： Stephen23 2020-10-26
I have a celll u(5,1) that looks like :
u{1,1}=''ART1/TEACH''
u{2,1}=''H0ME/SHOW''
I want to remove the first 5 characters from each of these strings so that :
u{1,1}=''TEACH''
u{2,1}=''SHOW''
How can I do it?
  1 个评论
Stephen23
Stephen23 2020-10-26
The duplicated single-quotes are not valid MATLAB syntax:
u{1,1} = ''ART1/TEACH''
u{2,1} = ''H0ME/SHOW''
Do you actually have a cell array of character vectors:
u = {'ART1/TEACH';'H0ME/SHOW'}
or a string array?:
u = ["ART1/TEACH";"H0ME/SHOW"];

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回答（2 个）

per isakson
per isakson 2020-10-26
编辑：per isakson 2020-10-26
... or if I understand "I want to remove the first 5 characters from each of these strings" literally
%%
u{1,1} = "ART1/TEACH";
u{2,1} = "H0ME/SHOW";
%%
for jj = 1 : size(u,1)
u{jj,1} = eraseBetween(u{jj,1},1,5);
end
It's recommended to keep strings in string arrays rather than cell arrays.
%%
u(1,1) = "ART1/TEACH";
u(2,1) = "H0ME/SHOW";
%%
u = eraseBetween( u, 1,5 );
inspect
>> u
u =
2×1 string array
"TEACH"
"SHOW"
And a final alternative
%%
u(1,1) = "ART1/TEACH";
u(2,1) = "H0ME/SHOW";
%%
u = extractAfter( u, "/" );
Cris LaPierre
Cris LaPierre 2020-10-26
Ran in:
Perhaps try using cellfun in combination with extract?
u{1,1}="ART1/TEACH";
u{2,1}="H0ME/SHOW"
u = 2x1 cell array
{["ART1/TEACH"]} {["H0ME/SHOW" ]}
f = @(x) extractAfter(x,5);
a=cellfun(f,u,'UniformOutput',false);
a=vertcat(a{:})
a = 2×1 string array
"TEACH" "SHOW"

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