search for: 1999q2

R help, I would like to change the labels of my tick marks on the x-axis, and I am having difficulty understanding how. Basically, my current axis labels are: 0, 50, 100, 150, 200, and I would like: 1962Q1, 1974Q2, 186Q4, 1999Q2, 2011Q4. With all respect to generality, could you please simply tell me the code to achieve this in the context of this problem? I learn programming by example and will not be able to understand this: ltext(x, y = NULL, labels = seq_along(x), col, alpha, cex, srt = 0, lineheight, fon...

...11Q4) where 1, 2, .... are placed in Col1. Now the income statement of a specific quarter is actually the accumulation from the beginning of the year. For example, the cost data of 1999Q3 is the cost from January to September 1999. Now, to find the cost in 1999Q3, I need to subtract the data of 1999Q2 from the data of 1999Q3. Is there an easy way to process the whole dataset? Thanks > bank_incst Col1 cpi date name expense cost prov 1 1 96.66333 9803 4 3675 5919 2244 2 1 96.66333 9803 5 2776 3596 820 3 1 96.66333 9803 6 4422 6365...