Align documentation and implementation

tsplotsql

@@ -10,7 +10,7 @@ use TimeSeries;
 
 =head1 NAME
 
-tsplot - plot time series in column format
+tsplotsql - plot time series from sql query
 
 =head1 SYNOPSIS
 
@@ -23,15 +23,14 @@ tsplot
 [--style style]
 [--time_t]
 [--yrange min max]
-[query ...]
+[--log_y]
+query
 
 =head1 DESCRIPTION
 
-This program expects time series data in column format, I.e.,
-each line contains a timestamp and the values for each series, except
-the first one which contains the column headers, which are used for the
-legend. Columns are separated by any amount of whitespace unless the
---tsv option is given which enables tab-separated columns.
+This program expects time series data from an SQL query in column
+format, I.e., each row contains a timestamp and the values for each
+series. The column names are used for the legend.
 
 The default legend position is "top right", same as with gnuplot.
 Another frequently useful position (especially if you have lots of series)
@@ -56,32 +55,34 @@ my $output_format ='png';
 my $log_y =0;
 my $time_t =0;
 my $style = "lines";
-my $tsv   = 0;
 my $stacked = 0;
 my @yrange;
 my $keeptempfiles;
 my $finalresolution;
+my $legend_position = 'top right';
 my $dbname;
 
 GetOptions('output_format|output-format=s' => \$output_format,
 	   'log_y|log-y'		   => \$log_y,
 	   'time_t'			   => \$time_t,
 	   'style=s'			   => \$style,
-	   'tsv'			   => \$tsv,
 	   'stacked'			   => \$stacked,
 	   'yrange=s{2}'		   => \@yrange,
 	   'keeptempfiles'		   => \$keeptempfiles,
 	   'finalresolution=i'		   => \$finalresolution,
+	   'legend-position=s'		   => \$legend_position,
            'dbname=s'                      => \$dbname,
           ) 
     or pod2usage(verbose => 0);
-
-my $sep = $tsv ? qr/\t/ : ' ';
+unless ($ARGV[0]) {
+    pod2usage(verbose => 0);
+}
 
 binmode STDOUT, ':raw';
 
 my $ts = TimeSeries->new(output_format => $output_format);
 $ts->{keeptempfiles} = 1 if $keeptempfiles;
+$ts->legend_position($legend_position);
 
 my $dbh = DBIx::SimpleConnect->connect($dbname);
 my $sth = $dbh->prepare($ARGV[0]);