version bump

These are just convenience options that are VERY similar to --rangesize and
--rangesizeall. But adding these makes this tool nicely similar to gnuplotlib

Changes

@@ -1,3 +1,34 @@
+feedgnuplot (1.47)
+
+  * Fixed typo. Everything is un-broken now
+
+ -- Dima Kogan <dima@secretsauce.net>  Fri, 23 Feb 2018 10:21:13 -0800
+
+feedgnuplot (1.46)
+
+  * Added --tuplesize and --tuplesizeall as alternatives to --rangesize
+    and --rangesizeall. Both forms are supported.
+  * Vnlog integration
+
+ -- Dima Kogan <dima@secretsauce.net>  Thu, 22 Feb 2018 23:37:54 -0800
+
+feedgnuplot (1.45)
+
+  * zsh completion: --hardcopy, --image  suggest filenames
+  * --image now produces a nicer legend: just the filename
+  * --curvestyle now overrides --curvestyleall
+    - This is a bug fix
+  * The version is now treated as a string not as a number
+    - So "1.40" is distinct from "1.4"
+
+ -- Dima Kogan <dima@secretsauce.net>  Sun, 29 Oct 2017 13:56:28 -0700
+
+feedgnuplot (1.44)
+
+  * --image draws its output beneath everything else
+
+ -- Dima Kogan <dima@secretsauce.net>  Tue, 20 Jun 2017 16:44:30 -0700
+
 feedgnuplot (1.43)
 
   * Added --image
@@ -37,8 +68,8 @@ feedgnuplot (1.39)
 feedgnuplot (1.38)
 
   * hardcopy defaults:
-   - no enhanced text mode
+    - no enhanced text mode
-   - larger font size
+    - larger font size
 
  -- Dima Kogan <dima@secretsauce.net>  Wed, 27 Jul 2016 22:15:11 -0700
 

Makefile.PL

@@ -20,9 +20,9 @@ sub parseversion
 
   while(<PL>)
   {
-    if( /VERSION = ([0-9\.]+)/ )
+    if( /VERSION = '([0-9\.]+)'/ )
     {
-      if ( $1 != $version )
+      if ( $1 ne $version )
       {
         die "Version mismatch. Changes says version is '$version', but 'bin/feedgnuplot' says it is '$1'";
       }

bin/feedgnuplot

@@ -15,7 +15,8 @@ use Text::ParseWords; # for shellwords
 use Pod::Usage;
 use Time::Piece;
 
-my $VERSION = 1.43;
+# Makefile.PL assumes this is in ''
+my $VERSION = '1.47';
 
 my %options;
 interpretCommandline();
@@ -101,8 +102,9 @@ sub interpretCommandline
   $options{with}          = '';
 
   $options{rangesize} = [];
+  $options{tuplesize} = [];
 
-  GetOptions(\%options, 'stream:s', 'domain!', 'dataid!', '3d!', 'colormap!', 'lines!', 'points!',
+  GetOptions(\%options, 'stream:s', 'domain!', 'dataid!', 'vnlog!', '3d!', 'colormap!', 'lines!', 'points!',
              'circles', 'legend=s{2}', 'autolegend!', 'xlabel=s', 'ylabel=s', 'y2label=s', 'zlabel=s',
              'title=s', 'xlen=f', 'ymin=f', 'ymax=f', 'xmin=s', 'xmax=s', 'y2min=f', 'y2max=f',
              'zmin=f', 'zmax=f', 'y2=s@',
@@ -112,7 +114,9 @@ sub interpretCommandline
              'image=s',
              'histogram=s@', 'binwidth=f', 'histstyle=s',
              'terminal=s',
-             'rangesize=s{2}', 'rangesizeall=i', 'extraValuesPerPoint=i',
+             'rangesize=s{2}', 'rangesizeall=i',
+             'tuplesize=s{2}', 'tuplesizeall=i',
+             'extraValuesPerPoint=i', # deprecated and undocumented
              'help', 'dump', 'exit', 'version',
              'geometry=s') or exit 1;
 
@@ -153,6 +157,11 @@ sub interpretCommandline
     delete $options{with};
   }
 
+  if( $options{dataid} && $options{vnlog} )
+  {
+    print STDERR "--dataid and --vnlog are mutually exclusive. Please just use one.\n";
+    exit -1;
+  }
 
   # expand options that are given as comma-separated lists
   for my $listkey (qw(histogram y2))
@@ -160,7 +169,7 @@ sub interpretCommandline
     @{$options{$listkey}} = map split('\s*,\s*', $_), @{$options{$listkey}}
       if defined $options{$listkey};
   }
-  for my $listkey (qw(curvestyle rangesize))
+  for my $listkey (qw(curvestyle rangesize tuplesize))
   {
       next unless defined $options{$listkey};
       my @in = @{$options{$listkey}};
@@ -180,6 +189,35 @@ sub interpretCommandline
   }
 
 
+  # convert all tuplesize business to rangesize
+  my $domainsize = $options{'3d'} ? 2 : 1;
+  if (defined $options{tuplesizeall})
+  {
+      if (defined $options{rangesizeall} )
+      {
+          print STDERR "Only one of --rangesizeall and --tuplesizeall may be given\n";
+          exit -1;
+      }
+
+      $options{rangesizeall} = $options{tuplesizeall} - $domainsize;
+      delete $options{tuplesizeall};
+  }
+  if (defined $options{tuplesize})
+  {
+      $options{rangesize} //= [];
+
+      my $N = @{$options{tuplesize}} / 2;
+      for my $i (0..$N-1)
+      {
+          $options{tuplesize}[2*$i + 1] -= $domainsize;
+      }
+
+      push @{$options{rangesize}}, @{$options{tuplesize}};
+      delete $options{tuplesize};
+  }
+
+
+
   # If we're plotting histograms, then set the default histogram options for
   # each histogram curve
   #
@@ -438,7 +476,7 @@ sub interpretCommandline
           die "Couldn't read image '$options{image}'";
       }
 
-      push @{$options{equation}}, qq{"$options{image}" binary filetype=auto flipy with rgbimage};
+      unshift @{$options{equation}}, qq{"$options{image}" binary filetype=auto flipy with rgbimage title "$options{image}"};
       delete $options{image};
   }
 }
@@ -719,11 +757,6 @@ sub mainThread
       print(PIPE "set xdata time\n");
     }
 
-    # add the extra global options
-    print(PIPE "$_\n")       foreach (@{$options{extracmds}});
-    print(PIPE "set $_\n")   foreach (@{$options{set}});
-    print(PIPE "unset $_\n") foreach (@{$options{unset}});
-
     # set up histograms
     $options{binwidth} ||= 1;   # if no binwidth given, set it to 1
     print PIPE
@@ -746,6 +779,11 @@ sub mainThread
     sendRangeCommand( "zrange",  $options{zmin}, $options{zmax} );
     sendRangeCommand( "cbrange", $options{zmin}, $options{zmax} ) if($options{colormap});
 
+    # add the extra global options
+    print(PIPE "$_\n")       foreach (@{$options{extracmds}});
+    print(PIPE "set $_\n")   foreach (@{$options{set}});
+    print(PIPE "unset $_\n") foreach (@{$options{unset}});
+
 
 
 
@@ -755,6 +793,41 @@ sub mainThread
     # The domain of the current point
     my @domain;
 
+    # column headers from vnlog
+    my @vnlog_headers;
+    if($options{vnlog})
+    {
+        require Vnlog::Parser;
+        require Vnlog::Util;
+
+        if ( !defined $pipe_in )
+        {
+            ($pipe_in, $selector) = openNextFile();
+        }
+
+        my $parser = Vnlog::Parser->new();
+        while (defined ($_ = Vnlog::Util::get_unbuffered_line($pipe_in)))
+        {
+            if ( !$parser->parse($_) )
+            {
+                die "Error parsing vnlog: $parser->{error}; looking at line '$_'";
+            }
+
+            my $keys = $parser->getKeys();
+            if (defined $keys)
+            {
+                @vnlog_headers = @$keys;
+                last;
+            }
+        }
+        if(!@vnlog_headers)
+        {
+            die "Looked through all of the first file, and never saw a vnlog legend";
+        }
+    }
+
+
+
     # The x-axis domain represented as a number. This is exactly the same as
     # $domain[0] unless the x-axis domain uses a timefmt. Then this is the
     # number of seconds since the UNIX epoch.
@@ -842,12 +915,29 @@ sub mainThread
         $domain0_numeric = makeDomainNumeric( $domain[0] );
       }
 
-      my $id = -1;
+      my $id      = -1;
-
+      my $i_curve = 0;
       while(@fields)
       {
-          if($options{dataid}) { $id = shift @fields; }
+          if   ($options{dataid})
-          else                 { $id++;               }
+          {
+              $id = shift @fields;
+          }
+          elsif($options{vnlog} )
+          {
+              if( $i_curve >= @vnlog_headers )
+              {
+                  # Got more columns than vnlog headers. The data is probably
+                  # bogus, but I don't want to barf at the user, so I silently
+                  # ignore the data
+                  last;
+              }
+              $id = $vnlog_headers[$i_curve];
+          }
+          else
+          {
+              $id++;
+          }
 
           my $rangesize = getRangeSize($id);
           last if @fields < $rangesize;
@@ -857,6 +947,8 @@ sub mainThread
                          @domain,
                          splice( @fields, 0, $rangesize ) ) . "\n",
                     $domain0_numeric);
+
+          $i_curve++;
       }
     }
 
@@ -978,7 +1070,8 @@ sub updateCurveOptions
       $usingoptions = "using 1:" . join(':', @rest);
   }
 
-  $curve->{options} = "$histoptions $usingoptions $titleoption $curve->{extraoptions} $options{curvestyleall}";
+
+  $curve->{options} = "$histoptions $usingoptions $titleoption $curve->{extraoptions}";
 }
 
 sub getCurve
@@ -997,7 +1090,11 @@ sub getCurve
 
   if( !exists $curveIndices{$id} )
   {
-    push @curves, {extraoptions      => ' ',
+    push @curves, {# if we have a catch-all style and no specific style, use
+                   # the catch-all style
+                   extraoptions      => (!exists $options{curvestyle_hash}{$id} &&
+                                          exists $options{curvestyleall}) ?
+                                        "$options{curvestyleall} " : ' ',
                    datastring        => '',
                    datastring_meta   => [],
                    datastring_offset => 0}; # push a curve with no data and no options
@@ -1167,45 +1264,45 @@ Simple plotting of piped data:
 
  $ seq 5 | awk '{print 2*$1, $1*$1}' |
    feedgnuplot --lines --points --legend 0 "data 0" --title "Test plot" --y2 1
-               --terminal 'dumb 80,40' --exit
+               --unset grid --terminal 'dumb 80,40' --exit
 
                                   Test plot
 
-  10 ++------+--------+-------+-------+-------+--------+-------+------*A 25
+  10 +-----------------------------------------------------------------+ 25
-     +       +        +       +       +       +        +       +    **#+
+     |       +        +       +       +       +        +       +    *##|
-     |       :        :       :       :       :        : data 0+**A*** |
+     |                                                  data 0 ***A*#* |
-     |       :        :       :       :       :        :       :** #   |
+     |                                                          ** #   |
-   9 ++.......................................................**.##....|
+   9 |-+                                                      ** ##    |
-     |       :        :       :       :       :        :    ** :#      |
+     |                                                      **  #      |
-     |       :        :       :       :       :        :  **   #       |
+     |                                                    **   #       |
-     |       :        :       :       :       :        :**   ##:      ++ 20
+     |                                                  **   ##      +-| 20
-   8 ++................................................A....#..........|
+   8 |-+                                               A    #          |
-     |       :        :       :       :       :      **:   #   :       |
+     |                                               **    #           |
-     |       :        :       :       :       :    **  : ##    :       |
+     |                                             **    ##            |
-     |       :        :       :       :       :  **    :#      :       |
+     |                                           **     #              |
-     |       :        :       :       :       :**      B       :       |
+     |                                         **      B               |
-   7 ++......................................**......##................|
+   7 |-+                                     **      ##                |
-     |       :        :       :       :    ** :    ##  :       :      ++ 15
+     |                                     **      ##                +-| 15
-     |       :        :       :       :  **   :   #    :       :       |
+     |                                   **       #                    |
-     |       :        :       :       :**     : ##     :       :       |
+     |                                 **       ##                     |
-   6 ++..............................*A.......##.......................|
+   6 |-+                             *A       ##                       |
-     |       :        :       :    ** :     ##:        :       :       |
+     |                             **       ##                         |
-     |       :        :       :  **   :    #  :        :       :       |
+     |                           **        #                           |
-     |       :        :       :**     :  ##   :        :       :      ++ 10
+     |                         **        ##                          +-| 10
-   5 ++......................**........##..............................|
+   5 |-+                     **        ##                              |
-     |       :        :    ** :      #B       :        :       :       |
+     |                     **        #B                                |
-     |       :        :  **   :    ## :       :        :       :       |
+     |                   **        ##                                  |
-     |       :        :**     :  ##   :       :        :       :       |
+     |                 **        ##                                    |
-   4 ++...............A.......###......................................|
+   4 |-+              A       ###                                      |
-     |       :      **:     ##:       :       :        :       :       |
+     |              **      ##                                         |
-     |       :    **  :   ##  :       :       :        :       :      ++ 5
+     |            **      ##                                         +-| 5
-     |       :  **    : ##    :       :       :        :       :       |
+     |          **      ##                                             |
-     |       :**    ##B#      :       :       :        :       :       |
+     |        **    ##B#                                               |
-   3 ++.....**..####...................................................|
+   3 |-+    **  ####                                                   |
-     |    **####      :       :       :       :        :       :       |
+     |    **####                                                       |
-     |  **## :        :       :       :       :        :       :       |
+     |  ####                                                           |
-     B**     +        +       +       +       +        +       +       +
+     |##     +        +       +       +       +        +       +       |
-   2 A+------+--------+-------+-------+-------+--------+-------+------++ 0
+   2 +-----------------------------------------------------------------+ 0
      1      1.5       2      2.5      3      3.5       4      4.5      5
 
 
@@ -1273,41 +1370,64 @@ with the I<X>-value at the start of that line.
 
 =head3 Curve indexing
 
-By default, each column represents a separate curve. This is fine unless sparse
+We index the curves in one of 3 ways: sequentially, explicitly with a
-data is to be plotted. With the C<--dataid> option, each point is represented by
+C<--dataid> or by C<--vnlog> headers.
-2 values: a string identifying the curve, and the value itself. If we add
+
-C<--dataid> to the original example:
+By default, each column represents a separate curve. The first column (after any
+domain) is curve C<0>. The next one is curve C<1> and so on. This is fine unless
+sparse data is to be plotted. With the C<--dataid> option, each point is
+represented by 2 values: a string identifying the curve, and the value itself.
+If we add C<--dataid> to the original example:
 
  $ seq 5 | awk '{print 2*$1, $1*$1}' | feedgnuplot --dataid --autolegend
 
 we get 5 different curves with one point in each. The first column, as produced
 by C<awk>, is B<2,4,6,8,10>. These are interpreted as the IDs of the curves to
-be plotted. The C<--autolegend> option adds a legend using the given IDs to
+be plotted.
+
+If we're plotting C<vnlog> data (L<https://www.github.com/dkogan/vnlog>) then we
+can get the curve IDs from the vnlog header. Vnlog is a trivial data format
+where lines starting with C<#> are comments and the first comment contains
+column labels. If we have such data, C<feedgnuplot --vnlog> can interpret these
+column labels if the C<vnlog> perl modules are available.
+
+The C<--autolegend> option adds a legend using the given IDs to
 label the curves. The IDs need not be numbers; generic strings are accepted. As
 many points as desired can appear on a single line. C<--domain> can be used in
-conjunction with C<--dataid>.
+conjunction with C<--dataid> or C<--vnlog>.
 
 =head3 Multi-value style support
 
 Depending on how gnuplot is plotting the data, more than one value may be needed
 to represent the range of a single point. Basic 2D plots have 2 numbers
 representing each point: 1 domain and 1 range. But if plotting with
-C<--circles>, for instance, then there's an extra range value: the radius. A
+C<--circles>, for instance, then there's an extra range value: the radius. Many
-similar situation exists with C<--colormap> where each point contains the
+other gnuplot styles require more data: errorbars, variable colors (C<with
-position I<and> the color. There are other gnuplot styles that require more data
+points palette>), variable sizes (C<with points ps variable>), labels and so on.
-(such as error bars), but none of these are directly supported by the script.
+The feedgnuplot tool itself does not know about all these intricacies, but they
-They can still be used, however, by specifying the specific style with
+can still be used, by specifying the specific style with C<--style>, and
-C<--style>, and specifying how many values are needed for each point with
+specifying how many values are needed for each point with any of
-C<--rangesizeall> or C<--rangesize> or C<--extraValuesPerPoint>. Those options
+C<--rangesizeall, C<--tuplesizeall>, C<--rangesize>, C<--tuplesize>. These
-that specify the range size are required I<only> for styles not explicitly
+options are required I<only> for styles not explicitly supported by feedgnuplot;
-supported by feedgnuplot; supported styles do the right thing automatically.
+supported styles do the right thing automatically.
 
-More examples: if making a 2d plot of y error bars where gnuplot expects a
+Specific example: if making a 2d plot of y error bars, the exact format can be
-(x,y,ydelta) tuple for each point, you want C<--rangesizeall 2> because you have
+queried by running C<gnuplot> and invoking C<help yerrorbars>. This tells us
-one domain value (x) and 2 range values (y,ydelta). Gnuplot can also plot
+that there's a 3-column form: C<x y ydelta> and a 4-column form: C<x y ylow
-lopsided y errorbars by giving a tuple (x,y,ylow,yhigh). This is similar as
+yhigh>. With 2d plots feedgnuplot will always output the 1-value domain C<x>, so
-before, but you want C<--rangesizeall 3> instead.
+the rangesize is 2 and 3 respectively. Thus the following are equivalent:
 
+ $ echo '1 2 0.3
+         2 3 0.4
+         3 4 0.5' | feedgnuplot --domain --rangesizeall 2 --with 'yerrorbars'
+
+ $ echo '1 2 0.3
+         2 3 0.4
+         3 4 0.5' | feedgnuplot --domain --tuplesizeall 3 --with 'yerrorbars'
+
+ $ echo '1 2 1.7 2.3
+         2 3 2.6 3.4
+         3 4 3.5 4.5' | feedgnuplot --domain --rangesizeall 3 --with 'yerrorbars'
 
 =head3 3D data
 
@@ -1541,6 +1661,19 @@ point in curve ID 20
 
 =item
 
+C<--vnlog>
+
+Vnlog is a trivial data format where lines starting with C<#> are comments and
+the first comment contains column labels. Some tools for working with such data
+are available from the C<vnlog> project: L<https://www.github.com/dkogan/vnlog>.
+With the C<vnlog> perl modules installed, we can read the vnlog column headers
+with C<feedgnuplot --vnlog>. This replaces C<--dataid>, and we can do all the
+normal things with these headers. For instance C<feedgnuplot --vnlog
+--autolegend> will generate plot legends for each column in the vnlog, using the
+vnlog column label in the legend.
+
+=item
+
 C<--[no]3d>
 
 Do [not] plot in 3D. This only makes sense with C<--domain>. Each domain here is
@@ -1557,7 +1690,8 @@ Interpret the X data as a time/date, parsed with the given format
 C<--colormap>
 
 Show a colormapped xy plot. Requires extra data for the color. zmin/zmax can be
-used to set the extents of the colors. Automatically sets the C<--rangesize>.
+used to set the extents of the colors. Automatically sets the
+C<--rangesize>/C<--tuplesize>.
 
 =item
 
@@ -1585,7 +1719,8 @@ Do [not] draw points
 C<--circles>
 
 Plot with circles. This requires a radius be specified for each point.
-Automatically sets the C<--rangesize>. C<Not> supported for 3d plots.
+Automatically sets the C<--rangesize>/C<--tuplesize>. C<Not> supported for 3d
+plots.
 
 =item
 
@@ -1626,7 +1761,10 @@ C<--xmin/xmax/ymin/ymax/y2min/y2max/zmin/zmax xxx>
 
 Set the range for the given axis. These x-axis bounds are ignored in a streaming
 plot. The y2-axis bound do not apply in 3d plots. The z-axis bounds apply
-I<only> to 3d plots or colormaps.
+I<only> to 3d plots or colormaps. Note that there is no C<--xrange> to set both
+sides at once or C<--xinv> to flip the axis around: anything more than the
+basics supported in this option is clearly obtainable by talking to gnuplot, for
+instance C<--set 'xrange [20:10]'> to set the given inverted bounds.
 
 =item
 
@@ -1768,9 +1906,9 @@ Gnuplot can plot both data and symbolic equations. C<feedgnuplot> generally
 plots data, but with this option can plot symbolic equations I<also>. This is
 generally intended to augment data plots, since for equation-only plots you
 don't need C<feedgnuplot>. C<--equation> can be passed multiple times for
-multiple equations. The given strings are passed to gnuplot directly without any
+multiple equations. The given strings are passed to gnuplot directly without
-thing added or removed, so styling and such should be applied in the string. A
+anything added or removed, so styling and such should be applied in the string.
-basic example:
+A basic example:
 
  seq 100 | awk '{print $1/10, $1/100}' |
    feedgnuplot --with 'lines lw 3' --domain --ymax 1
@@ -1820,7 +1958,7 @@ file type is desired, use both C<--hardcopy> and C<--terminal>
 
 =item
 
-C<--maxcurves xxx>
+C<--maxcurves N>
 
 The maximum allowed number of curves. This is 100 by default, but can be reset
 with this option. This exists purely to prevent perl from allocating all of the
@@ -1830,20 +1968,22 @@ system's memory when reading bogus data
 
 C<--monotonic>
 
-If C<--domain> is given, checks to make sure that the x- coordinate in the input
+If C<--domain> is given, checks to make sure that the x-coordinate in the input
 data is monotonically increasing. If a given x-variable is in the past, all data
 currently cached for this curve is purged. Without C<--monotonic>, all data is
-kept. Does not make sense with 3d plots. No C<--monotonic> by default. The data is
+kept. Does not make sense with 3d plots. No C<--monotonic> by default. The data
-replotted before being purged
+is replotted before being purged. This is useful in streaming plots where the
+incoming data represents multiple iterations of the same process (repeated
+simulations of the same period in time, for instance).
 
 =item
 
-C<--rangesize curveID xxx>
+C<--rangesize curveID N>
 
-The options C<--rangesizeall>, C<--rangesize> and C<--extraValuesPerPoint> set
+The options C<--rangesizeall> and C<--rangesize> set the number of values are
-the number of values are needed to represent each point being plotted (see
+needed to represent each point being plotted (see L</"Multi-value style
-L</"Multi-value style support"> above). These options are I<only> needed if
+support"> above). These options are I<only> needed if unknown styles are used,
-unknown styles are used, with C<--styleall> or C<--with> for instance.
+with C<--styleall> or C<--with> for instance.
 
 C<--rangesize> is used to set how many values are needed to represent the range
 of a point for a particular curve. This overrides any defaults that may exist
@@ -1855,19 +1995,25 @@ rangesize should apply.
 
 =item
 
-C<--rangesizeall xxx>
+C<--tuplesize curveID N>
+
+Very similar to C<--rangesize>, but instead of specifying the I<range> only,
+this specifies the whole tuple. For instance if we're plotting circles, the
+tuplesize is 3: C<x,y,radius>. In a 2D plot there's a 1-dimensional domain:
+C<x>, so the rangesize is 2: C<y,radius>. This dimensionality can be given
+either way.
+
+=item
+
+C<--rangesizeall N>
 
 Like C<--rangesize>, but applies to I<all> the curves.
 
-C<--extraValuesPerPoint xxx>
+=item
 
-Like C<--rangesizeall>, but instead of overriding the default, adds to it. For
+C<--tuplesizeall N>
-example, if plotting non-lopsided y errorbars gnuplot wants (x,y,ydelta) tuples.
-These can be specified both with C<--rangesizeall 2> (because there are 2 range
-values) or C<--extraValuesPerPoint 1> (because there's 1 more value than usual).
 
-This option is I<only> needed if unknown styles are used, with C<--styleall> or
+Like C<--tuplesize>, but applies to I<all> the curves.
-C<--with> for instance.
 
 =item
 

completions/zsh/_feedgnuplot

@@ -33,10 +33,10 @@ _arguments -S
     '*--set[Additional 'set' gnuplot commands]:set-option'                        \
     '*--unset[Additional 'unset' gnuplot commands]:unset-option'                  \
     '*--equation[Raw symbolic equation]:equation'                                 \
-    '--image[Image file to render beneath the data]:image'                        \
+    '--image[Image file to render beneath the data]:image:_files -g "(#i)*.(jpg|jpeg|png|gif)"' \
     '--square[Plot data with square aspect ratio]'                                \
     '--square_xy[For 3D plots, set square aspect ratio for ONLY the x,y axes]'    \
-    '--hardcopy[Plot to a file]:filename'                                         \
+    '--hardcopy[Plot to a file]:new image filename:_files -g "(#i)*.(jpg|jpeg|png|gif)"' \
     '--maxcurves[The maximum allowed number of curves]:number of curves'          \
     '(--3d)--monotonic[Resets plot if an X in the past is seen]'                  \
     '(--rangesizeall)--extraValuesPerPoint[How many extra values are given for each data range]:N'\