Sorting, searching, and counting¶
Sorting¶
sort (a[, axis, kind, order]) |
Return a sorted copy of an array. |
lexsort (keys[, axis]) |
Perform an indirect sort using a sequence of keys. |
argsort (a[, axis, kind, order]) |
Returns the indices that would sort an array. |
ndarray.sort ([axis, kind, order]) |
Sort an array, in-place. |
msort (a) |
Return a copy of an array sorted along the first axis. |
sort_complex (a) |
Sort a complex array using the real part first, then the imaginary part. |
partition (a, kth[, axis, kind, order]) |
Return a partitioned copy of an array. |
argpartition (a, kth[, axis, kind, order]) |
Perform an indirect partition along the given axis using the algorithm specified by the kind keyword. |
Searching¶
argmax (a[, axis, out]) |
Returns the indices of the maximum values along an axis. |
nanargmax (a[, axis]) |
Return the indices of the maximum values in the specified axis ignoring NaNs. |
argmin (a[, axis, out]) |
Returns the indices of the minimum values along an axis. |
nanargmin (a[, axis]) |
Return the indices of the minimum values in the specified axis ignoring NaNs. |
argwhere (a) |
Find the indices of array elements that are non-zero, grouped by element. |
nonzero (a) |
Return the indices of the elements that are non-zero. |
flatnonzero (a) |
Return indices that are non-zero in the flattened version of a. |
where (condition, [x, y]) |
Return elements, either from x or y, depending on condition. |
searchsorted (a, v[, side, sorter]) |
Find indices where elements should be inserted to maintain order. |
extract (condition, arr) |
Return the elements of an array that satisfy some condition. |
Counting¶
count_nonzero (a[, axis]) |
Counts the number of non-zero values in the array a . |