The time variable is most commonly plotted precisely as recorded in graphs showing change over time. However, if the most interesting part of the graph is very crowded, then transforming the time axis to give that part more space is worth consideration. In this column, I discuss logarithmic...

The statsby command collects statistics from a command yielding r-class or e-class results across groups of observations and yields a new reduced dataset. statsby is commonly used to graph such data in comparisons of groups; the subsets and total options of statsby are particularly useful in...

Paired, parallel, or profile plots showing the values of two variables may be constructed readily using a combination of graph twoway commands. This column explores the principles and practice of such plot-making, considering both wide and long (panel or longitudinal) data structures in which...

The term spineplot has been applied over the last decade or so to a type of bar chart used particularly for showing frequencies, proportions, or percentages of two cross-classified categorical variables. The principle is that the areas of rectangular tiles are proportional to the frequencies in...

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...

Since 2003, the Stata Journal has included Stata Tips on special issues in data analysis with Stata. Now Seventy-six Stata Tips, 2nd Edition compiles these useful guides into a compact tome for ease of reference. In keeping with the Stata spirit, Tips are from Stata users and StataCorp employees...

Box plots have been a standard statistical graph since John W. Tukey and his colleagues and students publicized them energetically in the 1970s. In Stata, graph box and graph hbox are commands available to draw box plots, but sometimes neither is sufficiently flexible for drawing some variations...

Graphical comparison of results for two or more groups or subsets can be accomplished by way of subdivision, superimposition, or juxtaposition. The choice between superimposition (several groups in one panel) and juxtaposition (several groups in several panels) can require fine discrimination:...

Design plots, as defined in this article, show summaries of a response variable given the classes or distinct levels of numeric or string variables presented as influencing factors. Any summarize results can be plotted using statsby as an engine to produce summaries for groups of observations...

Since 2003, the Stata Journal has published Stata Tips on special issues in data analysis with Stata. Now Thirty-three Stata Tips compiles these useful guides into a compact tome for ease of reference. In keeping with the Stata spirit, Tips are from Stata users and StataCorp employees alike and...