Making phylogenies of segmented viruses, Is there a way to set the scale?

[vicente09-uga]

Hello!
For part of my research I need to create trees of a segmented virus, one for each gene. But I have an issue, each resulted tree has a different scale so it makes difficult sometimes to visualize and compare differences between genes due to some have a scale of 7 and others a scale of 2. Do anyone knows if there is any way for the IQTREE software to select the scale you want the trees?

I will much appreciate your help. Thanks!

[bqminh]

I assume that you have different gene tree topologies, right? But I am not sure what you mean with scale here. If that's something from visualisation software, you may need to look into the settings of this software, which is controlled beyond IQ-TREE.

[vicente09-uga]

Thank you very much for your reply!. Yes I'm doing different genes of a multiple segmented virus, so when I build each tree on IQTREE 2 it gives me a specific tree of that gene and when I visualize on Fig tree there is a scale bar at the bottom some times the scale is 4.0 or 2.0 or 7.0 which is showing me the scale of the horizontal lines/genetic distance of each tree branch (hope I'm explaining my self).

The issue of having each tree with different value in the scale bars is that its difficult to compare the trees all together to look for patterns (e.g selective pressure), but that is something that comes with the IQtree file, is not something I can change with the Tree visualizer software like Figtree. So I was wondering if there is any way to choose the scale bar in the settings or before to make the phylogenetic trees.

Thank you very much!

[Echodonut]

I am also curious to understand what the scale bar is quantifying. Also using a tree generated by IQTREE, and visualizing with Figtree.