# Programming Bootcamp for Scientists #39

- 00:00 Numpy
- 00:44 What is Numpy?
- 00:55 Numpy vector
- 06:19 2D arrays
- 07:28 Set dtype
- 08:27 Ones and Zeros
- 10:10 Random array
- 12:12 Array dtype changes by division (int to float)
- 12:40 Transpose
- 13:00 Reference and not a copy
- 13:45 Copy array
- 14:02 Element-wise operations on Arrays
- 14:50 multiply, matmul, dot for vectors and matrices.
- 17:43 Casting - converting from strings to integers. (astype)
- 18:40 Indexing 1d array
- 19:26 Slice is a reference, copy
- 19:55 abs value on a Numpy array
- 22:17 Logical not on a Numpy array
- 23:36 Vectorize a function
- 27:36 Filtering array (selecting some of the values from an array)
- 33:00 Some statistics (sum, mean, std, var)
- 33:35 Serialization (saving an array to a file)
- 35:37 Load from Matlab file to a Numpy array
- 37:24 Save a Numpy array as a Matlab file
- 37:49 Horizontal stack vectors (hstack)
- 38:31 Append or Vertical stack vectors and matrices (vstack)
- 38:50 uint, int - showing data overflow

Published on 2022-11-05

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