How to save summary(lm) to a file?

Question

I\'m using R for a pharmacodynamic analysis and I\'m fairly new to programming.

The thing is, I\'m carrying out linear regression analysis and in the future I will

Answer 1

I think one option could be sink() which will output the results to a text file rather than the console. In the absence of your dataset I've used cars for an example:

sink("lm.txt")
print(summary(lm(cars$speed ~ cars$dist)))
sink()  # returns output to the console

lm.txt now looks like this:

Call:
lm(formula = cars$speed ~ cars$dist)

Residuals:
    Min      1Q  Median      3Q     Max 
-7.5293 -2.1550  0.3615  2.4377  6.4179 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept)  8.28391    0.87438   9.474 1.44e-12 ***
cars$dist    0.16557    0.01749   9.464 1.49e-12 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 3.156 on 48 degrees of freedom
Multiple R-squared:  0.6511,    Adjusted R-squared:  0.6438 
F-statistic: 89.57 on 1 and 48 DF,  p-value: 1.49e-12

@Roland 's suggestion of knitr is a bit more involved, but could be worth it because you can knit input, text output, and figures in to one report or html file easily.