Data Visualisation A picture is worth a thousand words.

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Presentation transcript:

Data Visualisation A picture is worth a thousand words

Introducing Visualisation

Maxim 19.1 People are processing tools, too, especially when it comes to processing visual information

Displaying Tabular Data Using HTML

Example HTML visualisation: identifying amino acid states figMIX1.eps

Example HTML visualisation: grouping amino acids figMIX2.eps

Displaying SWISS-PROT identifiers sw|Q52109|MERA_ACICA Mercuric reduct... MTTLKITGMTCDSCAAHVKEALEK...

Overview of the Mer Operon proteins in the SWISS-PROT database figMERTABLEHTML.eps

$ perl Makefile.PL $ make $ make test $ su $ make install $ $ ttf.pl | display Creating High Quality Graphics With GD

The test image produced by the GD module figTTF.eps

$ perldoc GD.pm Using the GD module

use GD; my $image = new GD::Image( 100, 100 ); $white = $image->colorAllocate( 255, 255, 255 ); $black = $image->colorAllocate( 0, 0, 0 ); $red = $image->colorAllocate( 255, 0, 0 ); $blue = $image->colorAllocate( 0, 0, 255 ); $image->transparent( $white ); $image->interlaced( 'true' ); $image->rectangle( 0, 0, 99, 99, $black ); $image->arc( 50, 50, 95, 75, 0, 360, $blue ); $image->fill( 50, 50, $red ); binmode STDOUT; print $image->png; Using the GD module - example

A sample image plan for a ``heat map'' figMIXPLAN.eps

Maxim 19.2 Producing plans avoids problems before problems surface

Displaying genes in EMBL entries

A plot of the interesting genes identified in EMBL entry ISTN501 figEMBLPLOT.eps

$ mogrify -resize 1600 Embl_sequence_graphic.png $ mogrify -resize x100 Embl_sequence_graphic.png $ man mogrify $ cp Embl_sequence_graphic.png Embl_sequence_graphic.original.png $ mogrify -resize 1600 Embl_sequence_graphic.png Introducing mogrify

The difference between resampling and resizing. This is resized figRESIZED.eps

The difference between resampling and resizing. This is resampled figRESAMPLED.eps

Plotting Graphs

Graph plotting using the GD::Graph modules

Example line graph from the GD::Graph module figGRAPHEXAMPLE1.eps

Example pie chart from the GD::Graph module figGRAPHEXAMPLE2.eps

Graph plotting using Grace

The GUI-based Grace application program figGRACESHOT.eps

The ``Absorbance'' image as produced by Chart::Graph::Xmgrace figPERLGRACE.eps

Where To From Here