How to create many variables from a dataset?

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Md. Golam Mostafa
Md. Golam Mostafa 2015-9-24
编辑： Stephen23 2019-6-19
I have a dataset having 369148 rows organised in two columns. Every 26 rows of the first column contains a specified scale and the next 26 rows a different scale and so on. Second column contains measurement values at every specified scale. Therefore, total 14198 scales each having 26 measurement values making a grand total of measurement values in the second column is 369148. I want to create 14198 variables for every specified scales each having 26 measurement values. Can someone help me out.

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回答（3 个）

Steven Lord
Steven Lord 2015-9-24
DON'T DO THIS. See question 1 in the Programming section of the FAQ for an explanation.
Reshape the original data set so that each of your "variables" is stored as a column of the data.
Stephen23
Stephen23 2015-9-25
编辑：Stephen23 2019-6-19
  2 个评论
Md. Golam Mostafa
Md. Golam Mostafa 2015-9-25
Thank you very much for your enlightening comment! I shall read all these stuffs and follow best practices.
Stephen23
Stephen23 2015-9-25
编辑：Stephen23 2015-9-25
Enjoy reading! Basically you should keep your data together as much as possible, because this makes MATLAB fast, and is neater to code. Learn to use the dimensions of numeric arrays rather than splitting up your data:
http://www.mathworks.com/help/matlab/math/multidimensional-arrays.html

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Thorsten
Thorsten 2015-9-25
You can reshape your data
data = reshape(data, 26, 14198, 2);
You can even let Matlab figure out the elements along the 2nd dimension
data = reshape(data, 26, [], 2);

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