R Sweave 块选项

Question

假设我在下面看到了两段代码，

<<include=FALSE>>=
inf.col <- cbind(dffits(col.lm), dfbetas(col.lm), cooks.distance(col.lm))
inf.col462 <- data.frame(inf.col[462,])
rownames(inf.col462) <- c("DFFITS", "DBETAS Intercept", "DBETAS Accept", "DBETAS Top10perc", "DBETAS PrivateYes", "DBETAS Outstate", "DBETAS PhD", "Cook's D")
inf.col462
inf.col484 <- data.frame(inf.col[484,])
rownames(inf.col484) <- c("DFFITS", "DBETAS Intercept", "DBETAS Accept", "DBETAS Top10perc", "DBETAS PrivateYes", "DBETAS Outstate", "DBETAS PhD", "Cook's D")
inf.col484
inf.col251 <- data.frame(inf.col[251,])
rownames(inf.col251) <- c("DFFITS", "DBETAS Intercept", "DBETAS Accept", "DBETAS Top10perc", "DBETAS PrivateYes", "DBETAS Outstate", "DBETAS PhD", "Cook's D")
inf.col251
inf.col460 <- data.frame(inf.col[460,])
rownames(inf.col460) <- c("DFFITS", "DBETAS Intercept", "DBETAS Accept", "DBETAS Top10perc", "DBETAS PrivateYes", "DBETAS Outstate", "DBETAS PhD", "Cook's D")
inf.col460
@

---

<<>>=
inf.col2 <- cbind(inf.col462, inf.col484, inf.col251, inf.col460)
inf.col2
@

---

在我的 .pdf 输出中，我只想查看第二个块中的代码。但是第二个块使用了第一个块的代码。因此，如果我使用<<eval=FALSE>>=，代码将根本无法运行，R 将不知道 inf.col462 等对象是什么。如图所示，我尝试了<<include=FALSE>>=，但它仍然会打印块 1 中的所有代码。

如何不打印块 1，而是将其信息存储在缓存中以评估块 2？

谢谢。

附：我需要：dplyr、knitr、tidyr。

Answer 1

我使用<<results=hide>>= 解决了这个问题。它不显示输出，但仍将其保存在内存中以供以后的代码块使用。谢谢！