Creating a pie chart in R with ggplot2 using microbiome data ... and why you shouldn't (CC104)

[@KN-tx7sd]

Hi Pat, when I try to save these pie charts the numbers corresponding to each segment are not getting displayed in the saved png or pdf file. Is this an issue with the ggsave function only for circular plots? (for bar plots no issues, the numbers are getting displayed). Is there an alternative to ggsave I could use with some modifications to display the text in the saved figures? Thank you

[@Riffomonas]

ggsave should save it the way you have it in the plots tab. But if you’re following the video I don’t recall there being any numbers on the pie charts…

[@danielvaulot5105]

Hi Pat, this was good full of little neat tricks to adjust the labels etc... Any chance you will talk about treemaps (basically square pie charts) ?

[@Riffomonas]

Hi Daniel! Thanks for the idea - I like the idea of looking at different approaches for describing hierarchy in data. I'm going to spend some time talking about how to represent relative abundances, but I'll be sure to come back to how we can represent hierarchical data. Have you seen any ones you really liked out "in the wild"? Thanks!

[@fburton8]

A really good use of pie charts is in books about visualizing data that explain why pie charts are bad for visualizing data. 😛

[@Riffomonas]

🔥🔥🔥

[@mike0133]

Sorry if i am asking this to you. What is your experience on gut microbiome test? I have one. Please, if you have experience with it, can i send it to you. Please man, even few advices could be really helpful for me

[@GabrielMorenoHagelsieb]

There's a lot of videos here about performing the analyses. You'd learn a lot by watching them and doing the exercises. You could use your own data for it.

[@Riffomonas]

I think commercial analyses can be fun for those that are curious and seek them as a form of entertainment. Unfortunately, our ability to draw health care related inferences is pretty limited. I study these things for a living and couldn’t tell you what yours “means”. I strongly encourage you to talk to your doctor about any symptoms or concerns you have and to follow their advise.

[@sitendugoswami1990]

Who makes pie charts in r? Its like saying lets show you how to use a ferrari for ploughing a field.

[@Riffomonas]

lol - don't dare me to use my Ferrari to plow my fields :) Hopefully, you'll see that this video really is more than pie charts. Also, there are a lot of "respectable" pie charts out there like radial dendrograms and genome maps - they all have the same problem as pie charts. Some are even worse!

[@xxXXCarbon6XXxx]

A microbiologist made a Pie chart on KZbin; my comment B.cereus

[@Riffomonas]

Hah!