Speaking Stata: Graphs for all seasons
Nicholas J. Cox
Department of Geography
Durham University
Durham City, UK
[email protected]
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Abstract. Time series showing seasonality—marked variation with time of
year—are of interest to many scientists, including climatologists,
other environmental scientists, epidemiologists, and economists. The usual
graphs plotting response variables against time, or even time of year, are
not always the most effective at showing the fine structure of seasonality.
I survey various modifications of the usual graphs and other kinds of graphs
with a range of examples. Although I introduce here two new Stata commands,
cycleplot and sliceplot, I emphasize exploiting standard
functions, data management commands, and graph options to get the graphs
desired.
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Nicholas J. Cox
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cycleplot, sliceplot, seasonality, time series, graphics, cycle plot, rotation, state space, incidence plots, folding, repeating
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