Michael Green
2010-Sep-16 11:22 UTC
[R] How do I create a plotable zoo object based on weekly data?
Dear readers, The problem is simple: I have weekly time series data with a maximum week number of (52,53,52,52) in (2008,2009,2010,2011) respectively. That means I have a dataset looking like this: 2008-01 value 2008-02 value . . 2011-52 value And I would like to turn that data into a plotable zoo object. Now a simple example containing 4 data points, each being on the December 28th, would be: x <- zoo(rnorm(4), as.Date("2008-12-28")+0:3*365) plot(x) This works fine, but y <- zoo(rnorm(4), format(as.Date("2008-12-28")+0:3*365, "%Y-%U")) plot(y) gives me the following warning message: Error in plot.window(...) : need finite 'xlim' values In addition: Warning messages: 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion 2: In min(x) : no non-missing arguments to min; returning Inf 3: In max(x) : no non-missing arguments to max; returning -Inf Anyone knows how to solve this? Best regards, Michael Green
Michael Green
2010-Sep-16 12:50 UTC
[R] How do I create a plotable zoo object based on weekly data?
Dear readers, The problem is simple: I have weekly time series data with a maximum week number of (52,53,52,52) in (2008,2009,2010,2011) respectively. That means I have a dataset looking like this: 2008-01 value 2008-02 value . . 2011-52 value And I would like to turn that data into a plotable zoo object. Now a simple example containing 4 data points, each being on the December 28th, would be: x <- zoo(rnorm(4), as.Date("2008-12-28")+0:3*365) plot(x) This works fine, but y <- zoo(rnorm(4), format(as.Date("2008-12-28")+0:3*365, "%Y-%U")) plot(y) gives me the following warning message: Error in plot.window(...) : need finite 'xlim' values In addition: Warning messages: 1: In xy.coords(x, y, xlabel, ylabel, log) : NAs introduced by coercion 2: In min(x) : no non-missing arguments to min; returning Inf 3: In max(x) : no non-missing arguments to max; returning -Inf Anyone knows how to solve this? Best regards, Michael Green
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