Hi,
* The time ranges are large (one-second samples over a period of
several days) and I find the x axis label formats are often
inappropriate to the scale. How to I control the format of
the x axis labels?
I only started using matplolib a few days ago, but I think I know how to do what you want:
···
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import matplotlib.dates as mdates # To read timestamps
...
xAxisTimeFormat = '%a\n%H:%M' # Format of time stamps on x-axis
hourLocator = mdates.HourLocator(interval=5) # Every 5 hours
minuteLocator = mdates.MinuteLocator(interval=30) # Every half hour
...
ax.xaxis.set_major_locator(hourLocator) # Set major tick marks
ax.xaxis.set_minor_locator(minuteLocator) # Set minor tick marks
ax.xaxis.set_major_formatter(mdates.DateFormatter(xAxisTimeFormat)) # Format x-axis labels
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I have a full example of plots that have a point every minute over the course of days:
MC Production Monitor (FNAL Region)# | University of Wisconsin–Madison
with a link to the full python script at the bottom.
Mike