Question

Minor issue regarding customization of text size in Volcano and Heatmap Plots

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cesar.arenasmena ▴ 10

@f31ab3f4

Last seen 23 months ago

United States

The text of MA plots can be customized, but I could not find a way to change the text size of the main title, axis and labels of Volcano, PCA and Heatmap plots. It would be great to have this feature, because sometimes figures have to be downsized to the point where they are not readable. Thanks. Cesar

DiffBind • 1.1k views

ADD COMMENT • link updated 23 months ago by Rory Stark ★ 5.2k • written 23 months ago by cesar.arenasmena ▴ 10

score 0 · Answer 1 · 2022-12-19

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James W. MacDonald 67k

@james-w-macdonald-5106

Last seen 4 days ago

United States

From ?EnhancedVolcano, there are these arguments

axisLabSize: Size of x- and y-axis labels.

   title: Plot title.

subtitle: Plot subtitle.

 caption: Plot caption.

titleLabSize: Size of plot title.

subtitleLabSize: Size of plot subtitle.

captionLabSize: Size of plot caption.

ADD COMMENT • link 23 months ago James W. MacDonald 67k

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The problem is that the arguments are fixed and embedded in the DiffBind dba.plotVlocano function.

ADD REPLY • link 23 months ago cesar.arenasmena ▴ 10

score 0 · Answer 2 · 2023-01-06

I've added an option to dba.plotVolcano() to (silently) return the ggplot object (instead of the differentially bound sites). This will only be available in the development version for now (beginning with DiffBind_3.9.4) and will be part of the next Bioconductor release. Once you have the ggplot object, you can apply a theme to change things like font size.