找不到ff包ffsave'zip'
问题描述：
可复制示例:
library("ff")
m <- matrix(1:12, 3, 4, dimnames=list(c("r1","r2","r3"), c("m1","m2","m3","m4")))
v <- 1:3
ffm <- as.ff(m)
ffv <- as.ff(v)
d <- data.frame(m, v)
ffd <- ffdf(ffm, v=ffv, row.names=row.names(ffm))
ffsave(ffd,file="C:\\Users\\R.wd\\ff\\ffd")
## Error in system(cmd, input = filelist, intern = TRUE) : 'zip' not found
系统:Windows 7 64位，R 15.2 64位
System: Windows 7 64bit, R 15.2 64bit
已安装工具
已将设置为Windows路径的300xn-x64压缩和600xn文件夹解压缩
zip 300xn-x64 and unzip 600xn folders set to windows Path already
cmd行工作，键入zip或解压缩，显示功能信息
cmd line working, type zip or unzip it shows function info
需要帮助！任何建议表示赞赏.
Need help! Any suggestion is appreciated.
答
未找到"zip"问题是ff软件包所独有的问题.这是一个简单的解决方案.
The 'zip' not found issue is a problem not unique to the ff package. Here is a simple solution.
- 下载Rtools https://cran.r-project.org/bin/windows/Rtools/
- 打开Rtools并导航到bin文件夹. Rtools> bin
- 在另一个窗口中，打开您的r路径.例如，我的是C:\ Program Files \ R \ R-2.15.2 \ bin \ x64(
- Download Rtools https://cran.r-project.org/bin/windows/Rtools/
- Open Rtools and navigate to the bin folder. Rtools > bin
- In a separate window, open your r path. For example, mine is C:\Program Files\R\R-2.15.2\bin\x64 (more details at CRAN R for windows FAQ)
- Copy the the Rtools Application "zip" (from 2) into the r path folder (from 3)
现在，您应该可以保存文件了.如果要加载文件，则还需要将解压缩复制到r路径文件夹中.
Now you should be able to save your file. If you want to load your file you'll need to copy unzip into your r path folder as well.