First we define a figure hook:

> options(SweaveHooks = list(fig = function() par(mfrow = c(2,

+ 2))))

Then we setup variable definitions without actually evaluating them

> x y x y lm1 summary(lm1)

Call:lm(formula = y ~ x)

Residuals:Min 1Q Median 3Q Max

-1.7946 -1.2770 0.2540 1.1738 1.5092

Coefficients:Estimate Std. Error t value Pr(>|t|)

(Intercept) 0.25501 0.92836 0.275 0.791x -0.05714 0.14962 -0.382 0.713

Residual standard error: 1.359 on 8 degrees of freedomMultiple R-Squared: 0.0179, Adjusted R-squared: -0.1049F-statistic: 0.1458 on 1 and 8 DF, p-value: 0.7125

> plot(lm1)

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