I'm new to matplotlib, so maybe this is obvious, but I've search quite a bit and can't find the answer.
I have a data set with several hundred rows and about 5 columns. I want to plot all data points (columns 2-5) on the same logarithmic chart with the x axis showing calendar dates (column 1). What is the best way to accomplish my task? I have been experimenting with semilogy, but I can't seem to figure out how to get columns 2-5 to plot by date. Just FYI, if it matters - the data is currently held in a csv file and each column may or may not have a data point for each date. Thanks in advance for any help!
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