Defining a constant as a coefficient from an r regression

Question

I am trying define a constant as a coefficient from an r regression. I.e. trying to define elasticity as the number -1.64431 that you can see in the photo.

reg <- lm(ln_q ~ ln_price, data=df) 
elasticity <- reg[["coefficients","ln_price"]]
print(elasticity)

I get the error:

Error in reg[["coefficients", "ln_price"]] : 
  incorrect number of subscripts

Any help much appreciated! :)

I'm guessing you might want - `coef(reg)["ln_price"]` ? – thelatemail Jan 22 '20 at 23:52 — thelatemail, Jan 22 '20 at 23:52

score 0 · Accepted Answer · answered Jan 22 '20 at 23:52

0

elasticity <- reg$coefficients[names(reg$coefficients)=="ln_price"]

answered Jan 22 '20 at 23:52

Jordan Hackett

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Please explain your answer so that others will understand. Only posting a code won't work. – TheParam Jan 23 '20 at 05:06

Defining a constant as a coefficient from an r regression

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