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Data obtained from https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip .
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Join - subject ids, activities and measures taken by the experimental smartphone gyroscope, for 'test' and 'train' dataset.
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Join - datasets 'train' and 'test'.
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Reduce - dataset to vars containing 'means' and 'std'
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Remove non-alphanumeric characters from variable names of previous dataset
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Name variables of the dataset *
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Label factors of variable 'activity' according to original dataset
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Generate secondary matrix of means by subjects and activity*
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'id' = subject's id
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'activity' = subject's acitivity at time of measurement
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all further variables are means of subjects and the respective activity*
- Variable names correspond to previous names after removal of all non-numeric character. See original, reduced codebook (codebook_orig.md) for variable definition.
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