[R] Suppressing the Intercept in lm() when using a dataframe for the model

[Cliff Clive]

It's easy to run a linear regression on a simple model without an intercept
just by doing this:

lm(y ~ x1 + x2 -1)


Is there a similar trick to suppress the intercept when your model is in a
large dataframe and you don't want to write out the names of individual
columns?

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