How to extract information on year when data is in quarterly format

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Raamasrinivas Venkata
编辑： Nicolas B. 2019-10-30
My data is in the following format:
Year
1971-Q1
1971-Q2
1971-Q3
1971-Q4
1972-Q1
1972-Q2
1972-Q3
1972-Q4... until the 4th quarter of 2018. I have data on inflation and unemployment for this period and would like to plot it in the same graph with 'Year' on the xaxis. How do I extract only the years to a seperate variable, ie, the first four numbers of the variable 'Year' ?

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回答（1 个）

Nicolas B.
Nicolas B. 2019-10-30
编辑：Nicolas B. 2019-10-30
have you thought about using extractBefore() function?
For example:
function year = extractYear(s)
year = str2double(extractBefore(s, '-'));
end

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