Hello, I have a table of data (attachment) from which I am trying to generate a graph. I import the data into a vector (is that the right term? matrix maybe), which seems to work fine except there is an X prepended to each date. This is my first problem. My second is how would I make a graph of the average weight of each group (PC3/CO, PC3/FO, FADU/CO, FADU/FO) vs. time. I would like each different groups weight to be differentiated in a legend and all four displayed on one graph, with the dates as x values and weight in grams as the y values. I have been able to grasp much of R, but for some reason this (simple to do in Excel or OpenOffice) evades me. Thanks, Rob
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