Rounding issue

[angelokisilmarino]

Hi, thanks for your great work! I am having an issue with some coefficients that are not rounding as expected. I am trying to round to 3 decimal places, but the command is exporting some coefficients with 16 decimal places. It does round to 3 decimal places as expected, but fills in up to the sixteenth with 12 zeros and a 1 at the end.

[acarril]

Hi, sorry it took me so long to reply. Based on what you describe, it seems like bug induced by floating points. I'll take a closer look and report back.

[acarril]

Could you please provide a minimum working example so that I can reproduce the issue?

[angelokisilmarino]

Hi, thanks for answering. The following example reproduces the rounding issue I reported here:

sysuse auto, clear

reg mpg trunk foreign

texresults using results.tex, texmacro(trunk) coef(trunk) unitzero replace

[acarril]

Unfortunately I am not able to reproduce the issue you describe. When running your example above, I get

% results.tex
\newcommand{\trunk}{$-0.68$}

which is the expected behavior: the result has a zero in the unit position, and it is rounded to two decimal places, which is the default. I am using Stata/MP 17.0 for Mac (Intel 64-bit), revision 01 Jun 2022. Below is a screenshot of what I run and the output I get.

[angelokisilmarino]

Indeed, it may be a version problem then, when I run on Stata 15, I get the output copied below. However, when I run on Stata 17, I get -0.68, just like you. I am sorry for that.

[acarril]

I see, no need to apologize! I presume it must be that the round() function works differently for different Stata versions. Unfortunately I don't have access to Stata 15 to try to debug this, so unless you're able to find a solution, it is unlikely that I'll be able to fix this issue on my end.

[gns36]

Hi! Thanks again for creating this package. I am having a similar rounding issue but slightly different circumstance. I am using matrices to create the lower and upper bounds on my coefficients and then also export those using texresults. However, one of my bounds also has the same rounding issue. I have tried exporting the contents from the matrix as a local, and also rounding the matrix itself. I also updated to stata18 but am still having this issue. Here is some code that recreates the issue:

`//recreate issue using auto data
sysuse auto, clear
reg mpg trunk foreign

//create matrices to find lower and upper bounds
mat var = e(V)
local v = var[1,1]
mat se = sqrt(var[1,1])
mat B = e(b)
mat b = B[1,1]
mat lb = b-num*se

//export results
texresults using results.txt, texmacro(lb) result(lb[1,1]) unitzero replace
cat results.txt`

The results show: \newcommand{\lb}{$-0.9500000000000001$}
instead of \newcommand{\lb}{$-0.95$}

Any help solving this issue would be greatly appreciated. Thank you for your time.