Introduction to Visualisations in Galaxy

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

What is Data Visualisation?

Making graphics to clearly convey data
Many different options

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

Why visualizations?

A picture is worth 1000 words
Anscombe’s Quartet. All these datasets share the same basic statistics: same mean, standard deviation and correlation, yet when visualizing them it is revealed they have vastly different structures.

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

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

JBrowse is not a display application like the previous examples
Genome browser as a regular tool
Configure your settings

Then interactively explore your genome

Galaxy Charts

Accessed through Charts icon on dataset
Different options depending on datatype

After selecting chart type, can customize settings
Example: Protein Viewer

Visualisation Tools

Many tools for visualisation
Example: Circos for circular data plots