If you use separate axis, e.g. to plot two different lines in one twoway environment in Stata, you might need to use separate axis. In order to properly set distinct titles for either axis, you can use the following code
twoway ///
(lfit y1_var x_var, ytitle("y1_var title")) ///
(lfit y2_var x_var, yaxis(2) ytitle("y2_var title", axis(2))), ///
xtitle("X title")where y1_var and y2_var are the values plotted on the y axes.
This might be already implemented in the most recent version of Stata, but I just came across the problem that there seems to be no straightforward way to combine a kernel density plot (i.e. kdensity) with a normal distribution of the underlying variable.
Continue reading “Add normal distribution to kernel density plot in Stata”Some time ago, we started a newsletter to keep you updated with the latest posts and interesting information related to Stata and LaTeX. To get email updates straight go your inbox, please subscribe here – we promise that we don’t spam you!
Especially when running loops (see our posts here), it can be important to get more information about a macro, such as the length, or its first or last element.
Continue reading “Information about Stata macros: number of elements and order within locals and globals”Most often when I search the internet for help on Stata, it is probably when I need to work with string variables (such as names). There are some very good summaries that cover aspects of string variables (e.g., this page). In this post –which will be continuously updated– we present random string functions that we think are extremely useful for Stata users.
Continue reading “Useful string functions in Stata (updated list)”Often I use locals to calculate something (such as the mean of a variable for a specific group) and use this in a loop (say, over groups or over years). If you, for example, want to calculate the share of observations that belong to one group (say: female==1), you could simply write
Do-files in Stata easily get a bit lengthy. Of course, you can try to shorten do-files and distribute code onto several do-files and have one master file that runs all of the respective sub-do-files (which are included by do dosubfile1.do). Alternatively, you can leave the do-file longish but write your code such that you only run parts of the code at once:
Manuscripts typically contain many different types of numbering: page numbering, sections, subsections, figures, tables etc.
Continue reading “Numbering in LaTeX documents”Many Stata commands get easily quite long. Take, for example, a command to generate a figure – possibly the layout definitions are quite lengthy and difficult to read. Stretching commands over several lines makes it much easier to write and read, and less prone to errors.
Continue reading “Multiple lines commands in Stata”From time to time, I need to write articles in Microsoft Word. When I then also need to include Equations in the Word document, I realise (again) why I so much prefer to use LaTeX. Today I came across a simple way of having Equation numbering included in a word document (although it is natively not supported). Well, it is supported but only above or below a formula…
Continue reading “Equation numbering in Microsoft Word”