blog/2021/new-ggseg-with-geom/

[giscus[bot]]

blog/2021/new-ggseg-with-geom/

A couple of months ago, we released a new version of our ggseg R-package for visualisations of brain atlases. I had been wanting to create such an update for a long time, but getting the internal logics of a ggplot geom working as I wanted was rather difficult. Likely because I was trying to do too many things, but, hey… that’s me!
One of the main things I wanted to get rid of, was this need to first group your data before sending it to ggplot if you want to facet.

https://drmowinckels.io/blog/2021/new-ggseg-with-geom/

[IBalboni]

Hi, Thank you for this is super useful! I have a very naive question. I would like to plot my results using this package and I am not really sure on how to proceed to color code the areas based on the values from my output. I am using the Glasser Atlas and for each area I have a value that represents its weight in a PLS analysis. If you know of some examples out there that might help I would be infinitely grateful. Thanks!

[drmowinckels]

Hi!

Happy you like the tool!
We have quite some online documentation, I hope that will answer your questions about custom colours.

https://ggseg.github.io/ggseg/articles/externalData.html

And to learn more about customising colour scale etc, have a look at the general ggplot2 documentation, which should cover that aspect.
https://ggplot2.tidyverse.org/reference/aes_colour_fill_alpha.html