I have a datafile in the following format:
Year Observed Flow Simulated Flow
2000 210 256
2001 560 568
2002 435 896
2003 58 95
---- ---- ----
Using plot2(...)gives the graph of observed and simulated flows in Y axis and Year in x axis (one graph). However, all Year format did not appear in the graph, rather it appeared as 1, 2, 3...etc. But I want to see the x-axis label in actual Year format like 2000, 2001, 2002, 2003...etc.
I tried using as.Date(...) and some other commands like as.POSIXct, however, couldn't able to convert 'Year' to "Year-Month-Day" format. The idea of converting Year into Year-Month-Day format is to read the data using read.zoo command, and thus, utilize plot2(....).
So the question is: How can I convert "Year" column to "Year-Month-Day" column so that the data would look like this:
Date Observed Flow Simulated Flow
2000-01-01 210 256
2001-01-01 560 568
2002-01-01 435 896
2003-01-01 58 95
---------- ---- ----
colClasses
at the level of data input. This is a "frequently asked question". Read the FAQ about converting factors to character and then use as.Date with the correct format. There must be at least a hundred worked examples of how to do this on SO. – IRTFM