Seperate the data of a table

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lakehead 2018 年 10 月 23 日
編集済み: jonas 2018 年 10 月 23 日
I have a table and would like to get out the specific lines based on chosen strings of the first and second column. Means when you look at the attached picture, I would like to have e.g. all the lines with 'Fossil Gas' and 'NO_1' and maybe build them up in a new table or better just take out the values of the last column.
Thank you for the answer! :)


jonas 2018 年 10 月 23 日
編集済み: jonas 2018 年 10 月 23 日
Just use logical indexing
T{strcmp(T{:,1},'Fossil Gas'),end}
The line
strcmp(T{:,1},'Fossil Gas')
returns a logical vector where rows matching the target string are true. This vector is then used to extract values from the last (end) column.
Depending on what you are trying to do, it may be wise to use the first column as a grouping variable, and evaluate the other columns group-wise.
  4 件のコメント
jonas 2018 年 10 月 23 日
My pleasure! Your data set indeed seems ideal for grouping. To get you started, you can look into the following functions
  • findgroups & splitapply
  • varfun
  • grpstats
They are three different functions for evaluating grouped data. If I had to pick one... I would probably go for varfun.


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