How to concatenate string vectors of unequal length?
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If I have thee vectors v1 = {'a' 'b' 'c'}', v2 = {'d'}' and v3 = {'e' 'f'}', how do I create a four vector v4 =
'a' 'd' 'e'
'b' '' 'f'
'c' '' ''
?
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采纳的回答
Image Analyst
2014-12-20
Try this:
% Define component cell arrays.
v1 = {'a'; 'b'; 'c'}
v2 = {'d'}
v3 = {'e'; 'f'}
% Find out how big cell array needs to be.
lv1 = length(v1);
lv2 = length(v2);
lv3 = length(v3);
rows = max([lv1,lv2,lv3])
% Instatiate cell array of the max size.
v4 = cell(rows, 3)
% stuff each column in.
v4(1:lv1, 1) = v1;
v4(1:lv2, 2) = v2;
v4(1:lv3, 3) = v3;
% Print out results
fprintf('\n\nHere is the output cell array:\n');
v4
In the command window:
Here is the output cell array:
v4 =
'a' 'd' 'e'
'b' [] 'f'
'c' [] []
更多回答(3 个)
Azzi Abdelmalek
2014-12-20
v1 = {'a' 'b' 'c'}',
v2 = {'d'}'
v3 = {'e' 'f'}'
v=cell(3,3)
v(:,:)={' '}
v(1:3,1)=v1
v(1,2)=v2
v(1:2,3)=v3
0 个评论
Thorsten
2014-12-20
v1 = {'a' 'b' 'c'}';
v2 = {'d'}';
v3 = {'e' 'f'}';
m = max([numel(v1) numel(v2) numel(v3)]);
if numel(v1) < m, v1{m} = []; end
if numel(v2) < m, v2{m} = []; end
if numel(v3) < m, v3{m} = []; end
M = [v1 v2' v3]';
X = M(:);
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Shoaibur Rahman
2014-12-20
编辑:Shoaibur Rahman
2014-12-20
v1 = {'a' 'b' 'c'}';
v2 = {'d'}';
v3 = {'e' 'f'}';
Lv1 = length(v1); Lv2 = length(v2); Lv3 = length(v3);
n = max([Lv1 Lv2 Lv3]);
v1cell = [v1; cell(n-Lv1,1)];
v2cell = [v2; cell(n-Lv2,1)];
v3cell = [v3; cell(n-Lv3,1)];
v4 = [v1cell v2cell v3cell];
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