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What is Apache Pig - ASIN()?

  • The ASIN() function is used to calculate the arc sine value of a given expression


  • Here is the syntax of the ASIN() function.
grunt> ASIN(expression)


  • Assume that there is a file named wikitechy_math.txt in the HDFSdirectory /pig_data/. This file contains integer and floating point values as shown below


  • And, we have loaded this file into Pig with a relation named wikitechy_math_data as shown below
  • Let us now calculate the arc sine values of the contents of the wikitechy_math.txt file using ASIN() function as shown below
grunt> asin_data = foreach wikitechy_math_data generate (data), ASIN(data);
  • The above statement stores the result in the relation named asin_data. Verify the contents of the relation using the Dump operator as shown below.
grunt> Dump asin_data;

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