![]() ![]() It is important to bear in mind that a simple line graph only shows the value of one observation per time unit. Reference lines are a powerful way to enhance your graphs.Our graph will show the development of GDP per capita in Sweden, with the help of the twoway command. You can even use reference lines for a categorical variable on a discrete axis. You can display labels for reference lines. You can display a line to indicate a reference value or a sample statistic. This article shows several ways to use the REFLINE statement in PROC SGPLOT to add information to your graphs.
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