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Thank you all!
Here is where I am at right now:
#!/usr/bin/perl use Chart::Gnuplot; #one must specify FILENAME to get data from (tab-delimited), a name fo +r the output file, a type for output file (e.g. pdf, png, eps) and a +plot title ($infile, $title, $type, $plot_title) = @ARGV; $outfile = $title.'.'.$type; #add or remove colours accordingly @colour_array = ("lblue", "brown", "blue", "lred", "lgreen", "yellow", + "green", "red", "purple", "orange", "pink", "dyellow"); @data; $counter; open IN, "$infile" or die $!; $label_line = <IN>; chomp $label_line; #find the labels data (for n +aming the colours in the stacked bars) @split_labels = split(/\t/, $label_line); while(<IN>) { chomp; $counter = 0; for (split/\t/,$_) { push @{$data[$counter++]}, $_; } } close IN; #x-axis labels is the row #0 in the AoA @data @x = @{$data[0]}; $total_y = @data-1; #find how many y rows we have => how many colou +rs we need (-1 because #0 is x-axis) @pick_colours = @colour_array[ 0 .. $total_y - 1 ]; # Initiate the chart object $chart = Chart::Gnuplot->new( output => $outfile, title => $title, xlabel => { text => 'Method', color => 'black', offset => "-1", font => 'Times-Roman, 20' }, ylabel => { text => $plot_title, color => 'black', offset => -1, font => 'Times-Roman, 20' }, yrange => [0, '*'], xtics => { rotate => '-270', font => 'Times-Roman, 15' }, ytics => { font => 'Times-Roman, 15' }, bg => { color => 'white', density => 0.2, }, plotbg => 'white', legend => {position => 'outside bottom'}, border => { sides => 'bottom, left', linetype => 3, width => 2, color => 'black', }, "style histogram" => 'rowstacked' ); #all the rest rows in @data are used for creating the histogram bars #create object foreach series of data (column in excel) $counter_objects=0; for $y ( 1 .. $#data ) { $legend_name = $split_labels[$y]; #get the name for the legend, + e.g 1TM, 2TM, >2TM @tmp_y = @{$data[$y]}; #create temp array $counter_objects++; ${y."$counter_objects"} = Chart::Gnuplot::DataSet->new ( xdata => \@x, ydata => \@tmp_y, title => "$legend_name", fill => {density => 0.2}, style => "histograms", ); } #$chart->plot2d($h1, $h2, $h3, $h4);

My main problem is that I want this script to be a general one, so I cannot know beforehand how many rows and columns I will have... I based my script in one example provided on the net, but in that one, the user had 4 arrays ( columns), which were hardcoded, so it was easy to say $chart -> plot2d ($h1, $h2, $3, $4). How can I do it in my case? And also, is the way I am trying to create the objects in the above for loop dynamically, correct? I think now, but I cannot figure out which is the correct syntax in this case. My thought was to somehow create the objects for the chart (in this case I need 4, aka 0TM, 1TM, 2TM, >2TM).

In reply to Re^2: Is this the correct structure? by Anonymous Monk
in thread Is this the correct structure? by Anonymous Monk

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