Array creation routines¶
See also
Ones and zeros¶
| empty | |
| empty_like | |
| eye | |
| identity | |
| ones | |
| ones_like() | Returns an array of ones with the same shape and type as a given array. |
| zeros | |
| zeros_like |
From existing data¶
| array | |
| asarray | |
| asanyarray | |
| ascontiguousarray | |
| asmatrix | |
| copy | |
| frombuffer | |
| fromfile | |
| fromfunction | |
| fromiter | |
| fromstring | |
| loadtxt |
Creating record arrays (numpy.rec)¶
Note
numpy.rec is the preferred alias for numpy.core.records.
| core.records.array(obj[, dtype, shape, ...]) | Construct a record array from a wide-variety of objects. |
| core.records.fromarrays(arrayList[, dtype, ...]) | create a record array from a (flat) list of arrays |
| core.records.fromrecords(recList[, dtype, ...]) | create a recarray from a list of records in text form |
| core.records.fromstring(datastring[, dtype, ...]) | create a (read-only) record array from binary data contained in |
| core.records.fromfile(fd[, dtype, shape, ...]) | Create an array from binary file data |
Creating character arrays (numpy.char)¶
Note
numpy.char is the preferred alias for numpy.core.defchararray.
| core.defchararray.array(obj[, itemsize, ...]) | Create a chararray. |
| core.defchararray.asarray(obj[, itemsize, ...]) | Convert the input to a chararray, copying the data only if necessary. |
Numerical ranges¶
| arange | |
| linspace | |
| logspace | |
| meshgrid | |
| mgrid | nd_grid instance which returns a dense multi-dimensional “meshgrid”. |
| ogrid | nd_grid instance which returns an open multi-dimensional “meshgrid”. |
Building matrices¶
| diag | |
| diagflat | |
| tri | |
| tril | |
| triu | |
| vander |
The Matrix class¶
| mat | |
| bmat |
