I need some help figuring out what's wrong with my mass spectra plots and I have a couple problems:
1) I want the plots to show a full peak for the mass spectra measured (beginning at 0.0) but my plots seem to show a gap from the first point to the last leaving a weird looking peak. 
2) I want to plot all the data together like my advisor did in his plot, but my data appears to break up. And one of my files will not plot with the others even though it plots well on it's own. 
I've written a function to read the data from the data files, and the function is simply just a reader, and doesn't do any of the plotting itself. I used Matplotlib to plot these spectra. Any advice?