Converting p value to -log10(p value) to plot the graph

Question

[lovely.molbio]

To plot the p value obtained from pathway analysis of RNA seq results, i am trying to convert p value to -log10(p value). But, i could not find any source to learn this. Can someone guide me how to calculate this? Thanks.

Answer 1

[cpad0112]

1. Open excel, try -log10(cell with p-value)
2. Open libreoffice calc, try -log10(cell with p-value)
3. Open R, try -log10(p-value vector) @ lovely.molbio

[lovely.molbio]

Thanks a lot. So simple. I should have focused more during maths classes.