1 package MojoFacets::Gnuplot;
6 use base 'Mojolicious::Controller';
8 use Data::Dump qw(dump);
9 use Digest::MD5 qw(md5_hex);
10 use Text::Unaccent::PurePerl;
15 my $columns = $self->session('columns') || return $self->redirect_to('/data/columns');
16 my $path = $self->session('path') || return $self->redirect_to('/data/load');
17 my $with = $self->param('with') || 'points';
20 if ( $self->param('gnuplot_hide') ) {
21 $hide_columns->{$_}++ foreach $self->param('gnuplot_hide');
22 warn "## hide_columns ", dump $hide_columns;
25 # my $name = join('.', 'items', map { my $n = unac_string($_); $n =~ s/\W+/_/g; $n } @$columns );
26 my $name = MojoFacets::Data::__export_path_name( $path, 'items', @$columns );
28 warn "# name $name\n";
30 my $url = "/export/$path/$name";
31 my $dir = $self->app->home->rel_dir('public');
33 if ( -e "$dir/$url" ) {
36 foreach ( 1 .. $#$columns ) {
37 my $title = $columns->[$_];
39 push @plot, qq|"$dir/$url" using 1:$n title "$title" with $with| unless $hide_columns->{ $title };
45 set output '$dir/$url.png'
49 if ( my $timefmt = $self->param('timefmt') ) {
53 set timefmt "$timefmt"
54 set format x "$timefmt"
59 #set xrange [ "2009-01-01":"2010-01-01" ]
62 $g .= "\n\nplot " . join(',', @plot) . "\n";
66 open(my $gnuplot, '|-', 'gnuplot') || die "gnuplot $!";
70 if ( -e "$dir/$url.png" ) {
71 warn "redirect $url.png";
72 return $self->redirect_to( "$url.png" );
74 $self->render_text( "no $dir/$url.png" );
77 $self->render_text("no graph for $url");