rdplot conformability error

[Maxime Bercholz]

Hi all,

Has anyone had the following error message after running rdplot (part of the user-contributed rdrobust package) with one-degree polynomials and other settings set to default (stylized output)?

. rdplot y x, p(1)
                select():  3200  conformability error
                 <istmt>:     -  function returned error
r(3200);

I can't share data due to restricted access, but for context:

• the outcome variables are all binary or otherwise discrete,
• the score or running variable is a linear transformation of age (age minus a policy-relevant date),
• the sample size varies between 231 and 460, with about 40% in the non-treated group across the outcome variables,
• rdplot runs with other outcome variables, some of which are also binary or discrete with similar sample sizes.

I also tried each of the other bin selection methods, four-degree polynomials and changing the shifting the score variable and cutoff arbitrarily for troubleshooting but I am still getting the same error.

Any insights appreciated!

[Maxime Bercholz]

Update for those coming upon my post: I was using an old version of the rdrobust package. All runs fine with the latest version available through SSC.