How to delete an element from a cell

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Maria
Maria 2014-4-26
评论： Maria 2014-6-24
I have a column in matlab with data written this way:
19970422
30980524
63098754
etc …
And I only want to have the first 4 numbers (preferably as a new variable), for instance like this:
1997
3098
6309
How can I do it? Thanks a lot for your help.

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采纳的回答

Apdullah YAYIK
Apdullah YAYIK 2014-4-27
编辑：Jan 2014-4-27
Thats easy
X=[19970422 30980524 63098754]
New_X=floor(X/1000)
  2 个评论
Azzi Abdelmalek
Azzi Abdelmalek 2014-4-27
This gives the 5 first digits, use : floor(X/10000) . Also this works only for numbers with 8 digits.
Image Analyst
Image Analyst 2014-4-27
And she said she had cells, not regular numerical arrays, though perhaps she didn't really mean cells - who knows.

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更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-4-26
编辑：Azzi Abdelmalek 2014-4-26
a=[19970422;30980524;63098754]
b=arrayfun(@num2str,a,'un',0)
out=cellfun(@(x) str2num(x(1:4)),b)
%or
a=[19970422;3098052422;630987541;0.23]
n=max(0,fix(log10(a)+1)-4)
out=fix(a./10.^n)
  2 个评论
Maria
Maria 2014-6-23
@Azzi Abdelmalek by any chance do you know how to do exactly the same thing, but with a cell element? Thanks in advance for your help!
Maria
Maria 2014-6-24
About this question, problem solved!

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