how to make table of ip address numbers

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Jay Hanuman
Jay Hanuman 2016 年 11 月 27 日
コメント済み: Jay Hanuman 2016 年 11 月 27 日
I attached ip address data file. I want to make table of ip address numbers. i.e. suppose I have ip addresses
10.0.12.4
10.0.12.5
10.0.7.4
10.0.8.5
10.0.8.4
then it should be in table format with 4 columns
10 0 12 4
10 0 2 5
10 0 7 4
10 0 8 5
10 0 8 4
how to do this.

採用された回答

Guillaume
Guillaume 2016 年 11 月 27 日
編集済み: Guillaume 2016 年 11 月 27 日
If using R2016b, you can use the new string type. It is then trivial to split the strings in one go with split and then convert to numbers with double:
numericip = double(split(string(X), '.'))
Otherwise, you can use the old-fashioned strsplit + str2double wrapped in a cellfun to create a vector per ip string. You have to use the 'UniformOutput', false option to store these vectors in a cell array, and then convert the whole cell array back to a matrix with cell2mat.
numericip = cell2mat(cellfun(@(ip) str2double(strsplit(ip, '.')), X, 'UniformOutput', false))
The first option is significantly faster (and less to type).
  1 件のコメント
Jay Hanuman
Jay Hanuman 2016 年 11 月 27 日
works thank you.

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その他の回答 (1 件)

Daniel kiracofe
Daniel kiracofe 2016 年 11 月 27 日
strsplit() will split up the strings for you. Then use sprintf() to make the formatting
https://www.mathworks.com/help/matlab/ref/strsplit.html

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