g.stats.pg(1)	       Grass User's Manual	    g.stats.pg(1)



NNAAMMEE
       _g_._s_t_a_t_s_._p_g - Generate a range of simple statistics for the
       values in a database column. (GRASS-RDBMS  General  Inter-
       face Program)

SSYYNNOOPPSSIISS
       gg..ssttaattss..ppgg

       gg..ssttaattss..ppgg hheellpp

       gg..ssttaattss..ppgg [[--vvff]] ttaabbllee_=_n_a_m_e ccoolluummnn_=_n_a_m_e [wwhheerree_=_c_l_a_u_s_e]

DDEESSCCRRIIPPTTIIOONN
       _g_._s_t_a_t_s_._p_g  generates  a series of simple statistics for a
       numeric column in the specified	table  of  the	currently
       selected  database.  The  currently  selected  database is
       identified by the  GRASS  environment  variable	$PG_DBASE
       which  is set using the command _g_._s_e_l_e_c_t_._p_g. If this envi-
       ronment variable is not set the program terminates with	a
       message	to the user.  _g_._s_t_a_t_s_._p_g generates statistics for
       any numeric column in the table specified by the user.  To
       identify  the data types for individual columns in a table
       in the currently selected database use the command  _g_._c_o_l_-
       _u_m_n_._p_g with the _-_v flag. Statistics generated for the col-
       umn include count, sum, average, minimum value and maximum
       value.

CCOOMMMMAANNDD LLIINNEE OOPPTTIIOONNSS
   PPaarraammeetteerrss::
       ttaabbllee==ddaattaabbaasseettaabblleennaammee
	   Name of table in currently selected database.

       ccoolluummnn==ddaattaabbaasseeccoolluummnnnnaammee
	   Column in [table] which is numeric in type.

	   wwhheerree_=ccllaauussee  Clause  to select only some records from
	   table


   FFllaaggss::
       --vv Verbose output

       --ff Use frequencies instead of min, max, mean



       EEXXAAMMPPLLEE

       _g_._s_t_a_t_s_._p_g _t_a_b_l_e_=_u_t_m _c_o_l_u_m_n_=_u_k_f_a_c_t

       Statistics for column: ukfact

	       171
	       sum
	       47.67
	       avg
	       0.28
	       max
	       0.49
	       min
	       0.00


BBUUGGSS
       None known.

NNOOTTEE
       This program requires the Postgres database software.

SSEEEE AALLSSOO
       _g_._s_e_l_e_c_t_._p_g_,
       _d_._r_a_s_t_._p_g_,
       _d_._v_e_c_t_._p_g_,
       _d_._w_h_a_t_._s_._p_g_,
       _r_._r_e_c_l_a_s_s_._p_g_,
       _v_._r_e_c_l_a_s_s_._p_g

AAUUTTHHOORR
       Original Informix SQL-tools: James A. Farley,  Wang  Song,
       and W. Fredrick
       Limp University of Arkansas, CAST

       Postgres   modifications:   Janne   Soimasuo,  Faculty  of
       Forestry, University
       of Joensuu, Finland.

       Updated to GRASS 5 by Alex Shevlakov (sixote@yahoo.com)



GRASS 5.0					    g.stats.pg(1)
