Importantly, these options should not be placed within the parentheses, since they apply to the entire graph. They can also be used in all twoway graphs. Using twoway bar instead with the xline () option will easily produce the desired output: sysuse auto, clear twoway bar price rep78, barwidth (0. We can do so with the options yline () and xline (). Calculate nice numbers for labeling or drawing grid lines. The x-axis is my time variable from a panel dataset, which was computed in the following way: generate yearmo ym (year, month) format yearmo tm I now try to use the xline option to insert a vertical line on the x-axis, but Stata is not accepting any specified date e.g. 1 The graph bar command is notorious for its inflexibility. Stata tip 2: Building with floors and ceilings.
XLINE OPTIONS STATA HOW TO
There is a choice in there of 500 as a suitable step size subject-matter knowledge will often make that choice easy, or ambitious readers may wish to think how to automate a choice.Ĭox, N. See Cox (2003) for more on building with floors and ceilings.
Conversely, the call to floor() rounds to the nearest multiple of 500, but always to the same value or downwards. k-0 Stata programs to calculate are available on the web. Weight | 74 3019.459 777.1936 1760 4840The call to ceil() (think 'ceiling' if the function is new to you) rounds to the nearest multiple of 500, but always to the same value or upwards. 3 xx1 and hence the linear hypothesis is tested by bb b 23 1'. The xtline command allows you to generate linear plots for panel data.
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