CODEWITHSUNDEEP
stata
user1718097
user1718097

Reputation: 4292

Adding formatted value to plot title in Stata

I have variables, y and x, and I have run a regression to obtain the slope of the regression line. I can retrieve the p value (and other parameters) from the regression model using the method described in https://journals.sagepub.com/doi/pdf/10.1177/1536867X0800700408, such as:

regress y x
local t = _b[x]/_se[x]
local p = 2*ttail(e(df_r),abs(`t'))

I want to produce a plot of the same data with a line predictor such as:

graph twoway (lfitci x y) (scatter x y), note("Simple regression p value = `p'")

However, in the above case, the p value that is presented in the plot's note area is expressed to full precision (and without the leading zero). How can I restrict the number of decimal places in the plot to a sensible number? I've tried including %9.3f but haven't been able to work out the correct syntax.

Upvotes: 0

Views: 191

Answers (1)

Nick Cox
Nick Cox

Reputation: 37358

local p : di %04.3f `p'

If you want spaces in front, put spaces in front.

Examples of similar technique can be found inside the code for aaplot on SSC.

Upvotes: 1

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