Data Input

Like Vega-Lite's data model, GenomeSpy utilizes a tabular data structure as its fundamental data model, resembling a spreadsheet or database table. Each data set in GenomeSpy is considered to consist of a set of records, each containing various named data fields.

In GenomeSpy, the data property within a view specification describes the data source. In a hierarchically composed view specification, the views inherit the data, which may be further transformed, from their parent views. However, each view can also override the inherited data.

Non-indexed eager data, which is fully loaded during the visualization initialization stage, can be provided as inline data (values) or by specifying a URL from which the data can be loaded (url). Additionally, you can use a sequence generator for generating sequences of numbers.

GenomeSpy provides several lazy data sources that load data on-demand in response to user interactions to support large genomic data sets comprising millions of records. These data sources enable easy handling of standard bioinformatic data formats such as indexed FASTA and BigWig.

Furthermore, GenomeSpy enables the creation of an empty data source with a given name. This data source can be dynamically updated using the API, making it particularly useful when embedding GenomeSpy in web applications.

• Eager data
• Lazy data