[R] Immutable ticks using ts.plot?

Hello all-   What I'm going for here is a stack of four time series plots that use a common X axis on the bottom plot. And setting up customized tick marks on each plot that help illustrate the respective trends. Here's my code:   Start fig_data <- ts(read.csv("F:/mydata.csv"), start=20

[R] editing/formatting stacked time series panels

Hello R-philes, I'm very new to R and hope this is a simple question to answer: I reading in 10 univariate time series and then using "plot()", which produces two columns of stacked plots showing the data. Perfect. Next, I want to add things using "lines()", but it's not working correctly. How