set chromosome width in biopython

Question

[l0o0]

Hi, I was trying to draw a single chromosome in biopython.

Everything goes well, except the width of the chromosome in the figure.

I found the output chromosome size is based on the output page size.

Is there any way to restrict the chromosome size except setting page size?

[Peter]

Are you talking about the Bio.Graphics.BasicChromosome module in Biopython?

Answer 1

[Peter]

Assuming you are using the Bio.Graphics.BasicChromosome module, I think you want to set the .chr_percent attribute which defaults to 0.25 (meaning 25% of the available width, based on the page size and the number of chromosomes being drawn). A pull request to improve the documentation here would be welcome. Personally I don't think I ever needed to change it.