Unable to understand 2 group flux

[hhhnain]

So i have a bare slab, im looking at the flux. i have energy filter and mesh filter. for mesh filter, my dimensions are 100,1,1 and for energy filter my groups are [0-1000eV, 1000eV-20MeV]. The first plot below is the two group, the second pic is single group flux. I don’t understand what it’s plotting against and why are are 200 date points as opposed to 100

[jsy]

I’d like to suggest you use pandas dataframe to analyse the data.your mesh dimension is 100×1×1,in two group,there are two energy bins,so the number of data is 100*2=200,but in one group,there is only one energy bin,so number of data is 100×1=100