Multi-quantitative tracks
In 2.1.0, we created the ability to have "Multi-quantitative tracks" which is a single track composed of multiple quantitative signals, which have their Y-scalebar synchronized. There are 5 rendering modes for the multi-quantitative tracks.
- xyplot
- multirowxyplot
- multiline
- multirowline
- multidensity
You can interactively change these settings through the track menu.
![Track menu for the multi-quantitative tracks showing different renderer types.](/jb2/img/multiwig/multi_renderer_types.png)
With the "multi-row" settings (multirowxyplot, multirowline, multidensity) the track colors are not modified. For the overlapping (xyplot, multiline), the tracks will be autoassigned a color from the palette. You can manually customize the subtrack colors from the track menu as well.
![The color/arrangement editor for multi-quantitative tracks let's you change individual subtrack colors, or their ordering in the row based layouts.](/jb2/img/multiwig/multi_colorselect.png)
Oftentimes, one of the outliers on one of the subtracks may affect the Y-scalebar too much, so it is often helpful to use the "Autoscale type->Local +/- 3SD" setting (3 standard deviations are displayed). Manually configuring the min or max scores is available via the track menu also.
Adding multi-quantitative tracks via the UI
There are several ways to create multi-quantitative tracks from scratch.
- Using the add track panel to open up a list of URLs for bigwig files, or from several local tracks from your machine
- Using the track selector to add multiple tracks to your current selection, and then creating a multi-wiggle track from the tracks in your selection
- Hardcoding the multiwiggle track in your config file (see multi-quantitative track configuration for more info)
![Using the add track widget, you can use the select dropdown to access alternative 'add track workflows' including the multi-wiggle add track workflow. In the multiwiggle add track workflow, you can paste a list of bigWig file URLs, or open up multiple bigwig files from your computer.](/jb2/img/multiwig/addtrack.png)
![Using the track selector, you can add multiple tracks to your current selection. You can use the '...' dropdown menu to add a single track or a whole category of tracks to your selection. Then, the 'shopping cart' icon in the header of the add track widget let's you create a multi-wiggle track from your selection.](/jb2/img/multiwig/trackselector.png)