3.2.1.0 table.getcolslice

NRAO Home > CASA > CASA Toolkit Reference Manual

table.getcolslice - Function

3.2.1 get a slice from a specific columnarray

Description

A slice from the entire column (or part of it) is returned. Warning: it might be big!
In blc and trc -1 can be used to indicate all values for a dimension (-1 in blc is equivalent to 1, so -1 is especially useful for trc). Note that blc and trc should not contain the row number, only the blc and trc of the arrays in the column.

Arguments


Inputs
columnname	Name of column
	allowed:	string
	Default:
blc	Bottom left corner (e.g. [0,0,0] is start of 3D array)
	allowed:	intArray
	Default:
trc	Top right corner
	allowed:	intArray
	Default:
incr	Stride (defaults to 1 for all axes)
	allowed:	intArray
	Default:
startrow	First row to read (default 0)
	allowed:	int
	Default:	0
nrow	Number of rows to read (default -1 means till the end)
	allowed:	int
	Default:	-1
rowincr	Increment in rows to read (default 1)
	allowed:	int
	Default:	1

Returns
anyvariant

Example

  tb.open("3C273XC1.MS")
  data=tb.getcolslice("DATA", [0,0], [1,0])
  data.shape
# (2 1 7669)

__________________________________________________________________

[next] [prev] [prev-tail] [front] [up]

More information about CASA may be found at the CASA web page

This code is available under the terms of the GNU General Public Lincense