# Plotting bands

1. Nov 20, 2014

### ChrisVer

I'm not really sure where this thread belongs...

Do you know any (free) program that can allow to build bands (instead of just line curves) to take into consideration the errors of a graph?

eg if I want to draw:
$y= bx + (c \pm \delta c)$ to get something like the yellow band in this (of course it's just an example for what I'm looking):

2. Nov 20, 2014

### Staff: Mentor

Looks like a science software question.

ROOT can do it, but I would avoid it if possible...

3. Nov 20, 2014

### gsal

There probably are several programs that do it and probably several ways to do it...a quick search reveals that you should be able to do it using python/matplotlib with the "fill_between" plotting funtion; see this example.