How to make each component a string in one whole string?

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Han
Han 2020-4-29
评论： Han 2020-4-29
I have an excel file that transfers over letters in a string like {'C D E F'}. I was wondering how to make each letter a string by itself, like 'C' 'D' 'E' 'F'.
Here's my code not sure if it will help or not.
%Paino Figure w/ pushbuttons
function PianoImage_HBraslawsce()
f=figure();
set(f, 'MenuBar','none'); %Remove menu bar
set(f,'NumberTitle','off');
set(f,'Name', 'Note Learner'); %Change name
%Each key as a pushbutton
%<SM:PLOT>
KEYC = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.15 .15 .1 .45], 'UserData', 'C','Callback',@keypressed);
KEYD = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.25 .15 .1 .45], 'UserData', 'D','Callback',@keypressed);
KEYE = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.35 .15 .1 .45], 'UserData', 'E','Callback',@keypressed);
KEYF = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.45 .15 .1 .45], 'UserData', 'F','Callback',@keypressed);
KEYG = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.55 .15 .1 .45], 'UserData', 'G','Callback',@keypressed);
KEYA = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.65 .15 .1 .45], 'UserData', 'A','Callback',@keypressed);
KEYB = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.75 .15 .1 .45], 'UserData', 'B','Callback',@keypressed);
KEYCHI = uicontrol('style','pushbutton','backgroundcolor',[1 1 1],'units','normalized',...
'position',[.85 .15 .1 .45], 'UserData', 'C(high)','Callback',@keypressed);
KEYCSH = uicontrol('style','pushbutton','backgroundcolor',[0 0 0],'units','normalized',...
'position',[.20 .3 .08 .3], 'UserData', 'C#','Callback',@keypressed);
KEYEb=uicontrol('style','pushbutton','backgroundcolor',[0 0 0],'units','normalized',...
'position',[.30 .3 .08 .3], 'UserData', 'Eb','Callback',@keypressed);
KEYFSH=uicontrol('style','pushbutton','backgroundcolor',[0 0 0],'units','normalized',...
'position',[.5 .3 .08 .3], 'UserData', 'F#','Callback',@keypressed);
KEYAb=uicontrol('style','pushbutton','backgroundcolor',[0 0 0],'units','normalized',...
'position',[.60 .3 .08 .3], 'UserData', 'Ab','Callback',@keypressed);
KEYBb=uicontrol('style','pushbutton','backgroundcolor',[0 0 0],'units','normalized',...
'position',[.70 .3 .08 .3], 'UserData', 'Bb','Callback',@keypressed);
%MATLAB read data
[~,~,Array]=xlsread('Note_File'); %<SM:READ>
%slices out notes only
Notes=Array(1:3,2:6); %<SM:SLICE>
Beginner=Notes(1:1,1:5); %slices out each level
Intermediate=Notes(2:2,1:5);
Advanced=Notes(3:3,1:5);
Beginner2=numel(Beginner); %randomizes beginner level
set1=randperm(Beginner2); %<SM:RANDUSE>
BeginnerRAN=Beginner(set1(1:1));
Intermediate2=numel(Intermediate); %randomizes intermediate level
set2=randperm(Intermediate2);
IntermediateRAN=Intermediate(set2(1:1));
Advanced2=numel(Advanced); %randomizes advanced level
set3=randperm(Advanced2);
AdvancedRAN=Advanced(set3(1:1));
randomKeysToPress = BeginnerRAN %this is where it stops working
for key = randomKeysToPress %<SM:FOR>
fprintf(' %s', char(key));
end
fprintf('\n');
atKey=1;
function keypressed(hObject, eventdata)
if strcmp(randomKeysToPress{atKey}, get(hObject, 'UserData'))==1
msgbox('Good Job!');
atKey = atKey + 1;
if atKey > length(randomKeysToPress)
fprintf('Game over!!!\n');
end
else
msgbox('ERROR. Please try again. \n');
end
end
end
  1 个评论
Rik
Rik 2020-4-29
What is your exact input? The cell containing a char array with space delimited letters?
And what is your exact output? Do you want a char array with just the letters? Should each letter be a char wrapped in a cell?

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回答（2 个）

jessupj
jessupj 2020-4-29
depends on how you want your output, but i'd use the split function and then cast the returned cell into a string array
Snew = string( split(S,' ') )
Snew{3}
ans =
'E'
https://www.mathworks.com/help/matlab/ref/split.html
  3 个评论
显示 1更早的评论
Rik
Rik 2020-4-29
They are already stored in a cell array. From your code it is not clear to me how you can best use it, but you don't need to hard-code indices.
Han
Han 2020-4-29
@ jessupj, actually I got it to work! Thank you soooo much!

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David Hill
David Hill 2020-4-29
I am not sure what you are doing, but:
x={'C D E F'};
y=cell2mat(x);
y=y(y~=' ')';%it is now a column matrix, but you could convert back to a cell array

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