Object: Prepare tidy dataset derived from a UCI project that can be used for later analysis.
Steps:
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Read data from .txt files downloaded in working directory into data frame, assign friendly names to data frames.
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Process data with merge and cbind functions into one whole data frame.
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Substract desired columns with "mean()" and "std()" for the tidy data.
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Take average on features by subject and activity respectfully.
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Export the result data frame using write.table function
Note: Detailed decriptions are embedded into the run_analysis.R script.