I hope someone on this list can help me here. I am a complete matplotlib 
and python novice, so please forgive me if it is a rather simple question.


I am trying to plot markers in matplotlib.  I have values at x at which 
they should appear, but that is it.  The y value of them should just be 
an arbitrary value (for example 0).

Here is an example of the data

2.10686
4.21443
5.01784
6.20608
6.32343
6.44145
6.77794
...
..
.

I can load the data with

reflections_1=numpy.loadtxt("list.txt")
phase_1=reflections_1[:,0]

What is the best way of now plotting this (as single vertical marker lines)?
I thought of using the quiver function, but cannot get this to work.

Any help appreciated.

Thanks

Adrian


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