python - For loop in matplotlib only plots first iteration -


i want read several columns csv file , plot them on single window. have this:

fig1=pl.figure(num=1, figsize=(8, 4), dpi=80, facecolor='w',edgecolor='k') a=np.random.rand(50,9) ax = pl.gca()  in range(0,6,2):             ax.errorbar(a[:,i], a[:,i+1], yerr= a[:,i+2])        ax.set_xscale('log') ax.set_xlim(1e19, 1e22) pl.show()

i no error message, output plot first iteration, when there should 3 in sample file. have put different parts of code in loop @ best first plot window , 2 empty windows not looking either. why isn't loop cycling through values? or assuming cycling through why plotting first one? thanks!

update: tcaswell, x range restrictive. classical case of not looking @ data close enough. embarrassing.


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