Numpy Contd…

• The method searchsorted() performs binary search in the array and returns the index where the specified value would be inserted to maintain search order
• The searchsorted() method is assumed to be used on sorted arrays
  
• Sorting Arrays
  
• Filtering arrays
  
  
  

Randoms Numbers with Numpy

• Generating random numbers
  

Random Distribution

• This is set of random numbers that follow a certain probai=bility density function
• Generate a 1-D array containing 50 values where each value has to 0,1,2,3 or 4
  • probability for the value to be 0 is 0.1
  • probabilty for the value to 1 is 0.3
  • probabilty for the value to 2 is 0.2
  • probaility for the value to be 3 is 0.2
  • probaility for the value to be 4 is 0.2
    

• Generate a 2-D array with values from the above pdf with size 4*5
  

• Shuffling arrays
  

Universal Functions (ufuncs)

• ufuncs are Numpy functions that operates on ndarray object
• They are used to implement vectoriazation in Numpy which is faster than iterating over elements
• ufuncs take additional args
  • where
  • dtype
  • out
• Sample
  
• Next Steps:
  • Write our own ufuncs
• Refer Here for the jupyter notebook