Numpy index slice without losing dimension information

by

Another solution is to do

X[[10],:]

or 

I = array([10])
X[I,:]

The dimensionality of an array is preserved when indexing is performed by a list (or an array) of indexes. This is nice because it leaves you with the choice between keeping the dimension and squeezing.

More Related Contents:

  1. How to calculate rolling / moving average using python + NumPy / SciPy?
  2. String concatenation of two pandas columns
  3. Intuition and idea behind reshaping 4D array to 2D array in NumPy
  4. Removing nan values from an array
  5. How to count the occurrence of certain item in an ndarray?
  6. How do I compute derivative using Numpy?
  7. How do I access the ith column of a NumPy multidimensional array?
  8. Compute a confidence interval from sample data
  9. Interweaving two numpy arrays
  10. How can I attach a pyplot function to a figure instance?
  11. How can I check if one two-dimensional NumPy array contains a specific pattern of values inside it?
  12. How does __contains__ work for ndarrays?
  13. Numpy – add row to array
  14. Python Array Slice With Comma?
  15. Why does numpy.linalg.solve() offer more precise matrix inversions than numpy.linalg.inv()?
  16. Pandas in AWS lambda gives numpy error
  17. Pandas groupby with categories with redundant nan
  18. Shuffling NumPy array along a given axis
  19. How to display progress of scipy.optimize function?
  20. Easy way to test if each element in an numpy array lies between two values?
  21. Python numpy: cannot convert datetime64[ns] to datetime64[D] (to use with Numba)
  22. One Hot Encoding using numpy [duplicate]
  23. Is there a numpy/scipy dot product, calculating only the diagonal entries of the result?
  24. sampling random floats on a range in numpy
  25. How can I draw lines into numpy arrays?
  26. Fast interpolation of grid data
  27. Get the indices of N highest values in an ndarray
  28. Interweaving two NumPy arrays efficiently
  29. How to convert a 3d numpy array to 2d
  30. Numpy.dtype has the wrong size, try recompiling

Leave a Comment