Visualisations in Galaxy

Contributors

Helena Rasche Saskia Hiltemann

What is Data Visualisation

• Making graphics to clearly convey data
• Many different options

What is Data Visualisation

• More than just scatter plots and bar charts
• Many domain-specific
  • Protein folding, network graphs, trees, genome browsers

Why visualizations?

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• “A picture is worth 1000 words”

• Anscombe’s Quartet

• All these datasets share the same basic statistics:

  X mean: 54.26, X SD: 16.76
  Y mean: 47.83, Y SD: 26.93
  Correlation: -0.06
  

• But visualisation reveals vastly different underlying structures! ] .pull-right[ .image-90[] ]

Speaker Notes Anscombes quartet, all these datasets have same mean, standard deviation and correlation, yet when visualizing them it is revealed they have vastly different structures.

Data Visualisation in Galaxy

Genome Browsers

• Visualize the genome
  • mapped sequence reads, variants, genes, ..

Genome Browsers in Galaxy

• As display applications
  • e.g. UCSC browser, IBV, IGB, ..

  • accessed via links on dataset

    

JBrowse

• Genome browser as a regular tool
• Configure your settings

.image-75[ ]

Speaker Notes

• JBrowse is not a display application like the previous examples
• Regular Galaxy tool

JBrowse

• Then interactively explore your genome

.image-75[]

Galaxy Charts

• Accessed through Charts icon galaxy-barchart on dataset
• Different options depending on datatype

Galaxy Charts

• After selecting chart type, can customize settings

• Example: Protein Viewer

  

Visualisation Tools

• Many tools for visualisation
• Example: Circos for circular data plots

Key Points

• Visualizations are vital for the interpretation of large datasets
• Galaxy has numerous visualization options available

Thank you!