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I'm building a web app that needs to calculate statistics on a data set. I need to calculate percentiles, averages, modes, and other statistical functions on arrays.
Normally in Python, I would just use scipy, numpy, or nltk which has a huge library of stat array functions. Are there any ruby gems or libraries I can utilize to do this?
In the case that there aren't any existing libraries, is there an easy way to do my data processing in Python while keeping my app in Ruby/Rails?
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Another useful feature of numpy arrays is the ability to run summary statistics (e.g. calculating averages, finding minimum or maximum values) across the entire array of values. For example, you can use the np. mean() function to calculate the average value across an array (e.g. np. mean(array) ) or np.
We just have to get the sum of corresponding array elements and then divide that sum with the total number of arrays.
An array is a linear data structure that collects elements of the same data type and stores them in contiguous and adjacent memory locations. Arrays work on an index system starting from 0 to (n-1), where n is the size of the array.
amax() will find the max value in an array, and numpy. amin() does the same for the min value.
If you really need a full statistics library, take a look at statsample. Otherwise you may find descriptive_statistics to be a nice, lightweight alternative.
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You might be able to use Rubystats or Easystats. I'm sure there's more gems out there I don't know about.
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