3.2.1.0 table.getvarcol

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table.getvarcol - Function

3.2.1 get a specific column (for variable arrays)

Description

Function getcol can only used if values in the column cells to get have the same shape. Function getvarcol addresses this limitation by returning the values as a record instead of an array. Each field in the record contains the value for a column cell. If the value is undefined (i.e. the cell does not contain a value), the unset value is put in the record. Each field name is the letter r followed by the row number. The length of the record is the number of rows to get.
Note that the function isvarcol tells if a column contains variable shaped arrays.

Arguments


Inputs
columnname	Name of column
	allowed:	string
	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
record

Example

  tb.open("3C273XC1.MS")
  gain=tb.getvarcol("DATA")
  print len(gain)
# 7669

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