.. index::
   single: G7 Reference Manual; U
   single: G7 Command; update 
   
   
*G7* Commands: U
================


.. _G7RMupdate:

**(up)date <series_name>**
   This routine works like the *data* command but instead updates an existing series. The data following the command contain only the data points to be changed.  The updated series is placed in the workspace only.  Note that if you skip values as in the example below, then they will be assigned as missing values.

   Example::

      update um
        1994.1  34.2 35.3
        1995.1  37.0
        1997.1  38.

   You later can interpolate the missing values for a series by using the *@lint* function. 

   Related Topics: Missing Values, :ref:`data <G7RMdata>`, :ref:`vdata <G7RMvdata>`