Assign number to certain value in cell

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Nickel Blankevoort
Nickel Blankevoort 2020-10-23
回答： Akira Agata 2021-11-25
Two cell arrays
First cell array (4x1cell):
A = As C H N
FIrst of all I would like to assign the value 1 to the first cell As, 2 to the second cell C, 3 to the tird cell H, 4 to the fourth cell N.
Second cell array (44x1cell):
B = As As N N H H H H C C C C C etc.
now I would like to create a vector X with the assigned values to the elements to the elements in B like:
X=[1 1 4 4 3 3 3 3 2 2 2 2 2 etc.]
Kind regards Nickel
  2 个评论
Walter Roberson
Walter Roberson 2020-10-24
Is it required that in the first step that variables named As and N and so on be created?
Nickel Blankevoort
Nickel Blankevoort 2020-10-24
If I understand your question correctly the answer is no.
the elements As,N,H and C are already in the first cell array and don't need to be created.
but the values 1,2,3 and 4 do need to be assinged to those elements.
the same goes for the second cell array, the elements are already in there.
finally a new vector needs te be created with the assigned number to the elements in the first cell array,
corresponding to the elements in the second cell array.
the elements in both cell arrays change all the time so ideally the code adapts to that

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回答（2 个）

Ahmed raafat
Ahmed raafat 2020-10-23
B{23,1}=[1 1 4 4 3 3 3 3 2 2 2 2 2 etc.]
like that???
  1 个评论
Nickel Blankevoort
Nickel Blankevoort 2020-10-24
Hi Ahmed,
I am not too sure where that {23,1} comes from but the vector after the equal sign is correct

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Akira Agata
Akira Agata 2021-11-25
Ran in:
How about using ismember function? Like:
% Sample cell arrays
A = {'As', 'C', 'H', 'N'};
B = {'As', 'As', 'N', 'N', 'H', 'H', 'H', 'H', 'C'};
% Create the array X
[~, X] = ismember(B, A);
% Show the result
disp(X)
1 1 4 4 3 3 3 3 2

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