相关疑难解决方法(0)

以下命令在pdf文件上执行ghostscript.(该pdf_file变量包含该pdf的路径)

bbox <- system(paste( "C:/gs/gs8.64/bin/gswin32c.exe -sDEVICE=bbox -dNOPAUSE -dBATCH -f", pdf_file, "2>&1" ), intern=TRUE)

执行后bbox包含以下字符串.

GPL Ghostscript 8.64 (2009-02-03)
Copyright (C) 2009 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
Processing pages 1 through 1.
Page 1
%%BoundingBox: 36 2544 248 2825
%%HiResBoundingBox: 36.395015 2544.659922 247.070032 2824.685914
Error: /undefinedfilename in (2>&1)
Operand stack:

Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1 …

我试图lm在Rmd文件中包含一个对象的摘要,使用如下代码,但它不起作用.你能帮帮我吗？

```{r summary_lm, results='asis', echo=FALSE, comment=NA}

library(apsrtable)
my_model <- lm(y ~ x, data = data.frame(y = rnorm(10), x = 1:10))
res <- apsrtable(my_model) # my_model is a linear regression model (lm)

cat("$$latex \n",res,"\n$$ \n")

```