Hi All,
  I just tried Firefox that David referred and found it can also return the
correct result as Google Chrome.
 So now it is more clear now that readLines() function uses IE as the
default explorer, so it return the wrong result. Then the possible
solutions are,
1. Could we change the options in readLines() to set another  explorer as
the default explore, e.g. Google Chrome?
2. Could it be possible to set IE explorer in a rational way, so that it
can return the same results as Google Chrome  and Firefox? I have tried to
modify the encoding method in IE, but it doesnot work.
  Any suggestions or help?

在 2011年12月24日 下午5:12，rusers.sh <rusers.sh@gmail.com>写道：

> Hi All,
>   I met a problem using readLines function to return the data from Google
> maps.
>
>   readLines(url("
> http://ditu.google.cn/maps/geo?q=+qianshuichong,+guichi+anhui,+CN&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg"),
> n=1, warn=FALSE)
>
> [1] "200,4,30.6528380,117.4872250"
>
>   The above code is ok because the address is English, but it cannot work
> when i change the address into zh-hans (Chinese simplified). See below.
>
>   readLines(url("http://ditu.google.cn/maps/geo?q=+前水冲<http://ditu.google.cn/maps/geo?q=+%E5%89%8D%E6%B0%B4%E5%86%B2>
> ,+贵池+安徽,+中国&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg&language=zh-CN&region=zh_Hans"),
> n=1, warn=FALSE)
>
> [1] "400,0,0,0"
>
>   The returned value is wrong. I also tried several other options, but
> still have the same problem. The interesting thing is if i paste the URL
> into the IE explorer directly, it do return the correct values.
>
>   Anybody can give me some suggestions or hints to solve this?
>
>   Thanks a lot.
>
>  P.S. See below for the other possibilities i tried.
>
> readLines(url("http://ditu.google.cn/maps/geo?q=+前水冲<http://ditu.google.cn/maps/geo?q=+%E5%89%8D%E6%B0%B4%E5%86%B2>
> ,+贵池+安徽,+中国&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg&language=zh-CN&region=zh"),
> n=1, warn=FALSE)
>
> [1] "400,0,0,0"
>
> readLines(url("http://ditu.google.cn/maps/geo?q=+前水冲<http://ditu.google.cn/maps/geo?q=+%E5%89%8D%E6%B0%B4%E5%86%B2>
> ,+贵池+安徽,+中国&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg&language=zh-CN"),
> n=1, warn=FALSE)
>
> [1] "400,0,0,0"
>
> readLines(url("http://ditu.google.cn/maps/geo?q=+前水冲<http://ditu.google.cn/maps/geo?q=+%E5%89%8D%E6%B0%B4%E5%86%B2>
> ,+贵池+安徽,+中国&output=csv&key=ABQIAAAAq8Fnd_oUka-7RdS6BrD7GBTqeABoQuNTXS36G_rkiwQnKRW6GBTkns8JpKz6y6dScgB8827dlddUlg&language=zh-CN"),
> n=1, warn=FALSE,encoding="UTF-8")
>
> [1] "400,0,0,0"
>
>
> --
> -----------------
> Jane Chang
> Queen's
>



-- 
-----------------
Jane Chang
Queen's

	[[alternative HTML version deleted]]

