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Alex Rivera
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I am creating a graph in python using a text file for the source data and matplotlib to plot the graph. The simple logic below works well. But is there a way to get have numpy.gentfromtxt only read the first 50 lines from the file 'temperature_logging'? Currently it reads the entire file. temp = numpy.genfromtxt('temperature_logging',dtype=None,usecols=(0)) time = numpy.genfromtxt('temperature_logging',dtype=None,usecols=(1)) dates = matplotlib.dates.datestr2num(time) pylab.plot_date(dates,temp,xdate=True,fmt='b-') pylab.savefig('gp.png') contents in temperature_logging; 21.75 12-01-2012-15:53:35 21.75 12-01-2012-15:54:35 21.75 12-01-2012-15:55:35 . . .
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