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What is SINH() function in Apache Pig ?
- The SINH() function is used to calculate the hyperbolic sine value of a given expression
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Syntax
grunt> SINH(expression)
Example
- Ensure that we have a file named wikitechy_math.txt in the HDFS directory /pig_data/. This file contains integer and floating point values as given below.
wikitechy_math.txt
5
16
9
2.5
5.9
3.1
- You have loaded this file into Pig with a relation named math_data as given below.
grunt> math_data = LOAD 'hdfs://localhost:9000/pig_data/wikitechy_math.txt' USING PigStorage(',')
as (data:float);
- Now you can generate the hyperbolic sine values of the contents of the wikitechy_math.txt file using SINH() function as given below.
grunt> sinh_data = foreach math_data generate (data), SINH(data);
Verification
Verify the contents of the relation using the Dump operator as given below.
grunt> Dump sinh_data;
Output
- The above statement stores the result in the relation named sinh_data.
(5.0,74.20321057778875)
(16.0,4443055.26025388)
(9.0,4051.54190208279)
(2.5,6.0502044810397875)
(5.9,182.51738161672935)
(3.1,11.076449978895173)