.. index::
   single: G7 Command; coef
   single: G7 Command; flow
   single: G7 Command; getsum
   single: Sums of Matrix Columns or Rows

The Coef, Flow, Getsum, Load, and Store Commands
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**coef <matrix> <vec> [year]**
   Convert the named flow matrix to a coefficient matrix by dividing each column of the matrix by the corresponding element of the named vector.  If no year is named, the command works over the *fdates* range.

**flow <matrix> <vec> [year]**
   Multiply each column of the matrix by the corresponding element of the named vector.  If no year is named, the command works over the *fdates* range.  This command is the opposite of *coef* command.

**getsum <matrix> <r|c> [<group>] <vector>**
   Get the sum of the rows or columns of a given matrix for the range of periods specified by the *fdates*.  The first argument must be the matrix or vector for which we want to obtain the sums.  The matrix is assumed to be stored in the default vam file unless a bank letter is provided.  The second argument must be 'r' or 'c' (to obtain the sum by rows or by columns).  If only a partial sum is desired, then the columns or rows are specified next.  The last argument is the vector where the result is to be stored; this vector must be located in the default vam file.  The sum is calculated and stored for all years, so that we cannot have mixed information in the target vector.

**load <vector_name>**
   When *G7* is working on a vector in a Vam file, it pulls the whole time series for the vector into a sort of vector workspace.  Usually, this is done automatically simply by referring to the vector or one of its elements.  The *load* command enables the user to do this loading explicitly.  It is used principally in connection with the *index* command.

   For example::

      load pce

**store**
   Store the currently loaded vector back to the Vam file with the modifications that have been made.  This *store* is automatic when a new *load* or implicit load is encountered.  When a *quit* command is given with an unstored, loaded vector, the program will store the vector automatically.