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Re: Importing data from the web

• To: mathgroup at smc.vnet.net
• Subject: [mg125170] Re: Importing data from the web
• From: Andy Ross <andyr at wolfram.com>
• Date: Sun, 26 Feb 2012 04:18:11 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201202250655.BAA01311@smc.vnet.net>

On 2/25/2012 12:55 AM, maria giovanna dainotti wrote:
> Dear Math Group,
>
> I have a problem importing the data from a web page.
>
> data4 = {{"050318", "00111529"}, {"050401", "00113120"}}
> Do[
>   ID = data4[[i, 2]];
>   s = Import["http://www.swift.ac.uk/xrt_curves/<>ID<>", "Text"];
>   Print[s],
>   {i, 1, Length[data4]}]
>
> The error message is
> $Failed
>
> I am really grateful if you could help me
>
> Best regards,
> Maria
>
>

Try re-writing as

Do[ID = data4[[i, 2]];
  s = Import["http://www.swift.ac.uk/xrt_curves/"; <> ToString@ID,
    "Text"];
  Print[s], {i, 1, Length[data4]}]

The issue is that you are trying to do a StringJoin (<>) inside a 
string.  You need to join separate strings "s1"<>"s2".

-Andy

• References:
  • Importing data from the web
    • From: maria giovanna dainotti <mariagiovannadainotti@yahoo.it>