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Re: Position in the importing loop from a Web

  • To: mathgroup at smc.vnet.net
  • Subject: [mg125214] Re: Position in the importing loop from a Web
  • From: maria giovanna dainotti <mariagiovannadainotti at yahoo.it>
  • Date: Wed, 29 Feb 2012 07:24:34 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi Bob,
unfortunately it is not still working:
This is the output.
I should have just {{}} and a number.  I am grateful of any further help

{{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {{8,
   32}}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, \
{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}}

Regards,
Maria

--- Mar 28/2/12, Bob Hanlon <hanlonr357 at gmail.com> ha scritto:

Da: Bob Hanlon <hanlonr357 at gmail.com>
Oggetto: Re: I: RE: [mg125158]Position in the importing loop from a Web
A: "maria giovanna dainotti" <mariagiovannadainotti at yahoo.it>
Cc: adriano.pascoletti at uniud.it, hmichel at cox.net, djorser at comcast.net, ulrich.arndt at data2knowledge.dev, mathgroup at smc.vnet.net
Data: Marted=EC 28 febbraio 2012, 23:37

If you look at the documentation for Position, the See Also section includes StringPosition. Since you are working with strings, you might want to try that.
Alternatively, the section on String Operations (guide/StringOperations) lists the operations used on strings.

data4={{"050318","111529"}};
Do[ID2=data4[[i,2]];s=Import["http://www.swift.ac.uk/xrt_curves/00";<>ID2,"Text"];
s=StringSplit[s,"\n"];line=StringPosition[s,"Flux Light Curve"],{i,1,Length[data4]}]

Bob Hanlon
On Tue, Feb 28, 2012 at 4:57 PM, maria giovanna dainotti <mariagiovannadainotti at yahoo.it> wrote:


Dear Adriano and Bob,
thanks for the further suggestion,
I am implementing the code
data4 = {{"050318", "111529"}}


Do[
 ID2 = data4[[i, 2]];
 s = Import["http://www.swift.ac.uk/xrt_curves/00"; <> ID2, "Text"];
 s = StringSplit[s, "\n"];

 line = Position[s, "Flux Light Curve"],
 {i, 1, Length[data4]}]

The stringSplit works properly, but when I want to identify the position it gives
line {} empty
I expect instead a number like

{{106}} for example

I am grateful if you could help.


Best regards,
Maria
--- Mar 28/2/12, Bob Hanlon
 <hanlonr357 at gmail.com> ha scritto:

Da: Bob Hanlon
 <hanlonr357 at gmail.com>
Oggetto: Re: I: RE: adding a string to a list of number in the importing loop from a Web
A: "maria giovanna dainotti" <mariagiovannadainotti at yahoo.it>

Cc: hmichel at cox.net, adriano.pascoletti at uniud.it, djorser at comcast.net, ulrich.arndt at data2knowledge.dev, "mathematica group" <mathgroup at smc.vnet.net>

Data: Marted=EC 28 febbraio 2012, 04:42

I recommend that you go to the virtual book and read the sections on strings.


data4 = {{"050318", "111529"}, {"050401", "113120"}};

Do[ID = data4[[i, 2]];

 s = Import["http://www.swift.ac.uk/xrt_curves/"; <> "00" <> ID, "Text"];

 Print[s], {i, 1, Length[data4]}]



Bob Hanlon
On Mon, Feb 27, 2012 at 9:00 PM, maria giovanna dainotti <mariagiovannadainotti at yahoo.it> wrote:









Dear All,
thanks for the previous suggestions all of them worked.

I have  a long list of elements (I just took two as example)
data4 = {{"050318", "111529"}, {"050401", "113120"}} and I
 would like to add in the second element 00 
When I try
Do[
 ID = data4[[i, 2]];
 s = Import["http://www.swift.ac.uk/xrt_curves/"; <> 00 ID, "Text"];


 Print[s],
 {i, 1,
 Length[data4]}]
This does,'t work
As well as the following:
Do[
 ID = data4[[i, 2]];
 s = Import["http://www.swift.ac.uk/xrt_curves/"; <> "00" ID, "Text"];


 Print[s],
 {i, 1,
 Length[data4]}]

As well as this again
Do[
 ID = data4[[i, 2]];
 s = Import["http://www.swift.ac.uk/xrt_curves/"; <> "00ID", "Text"];


 Print[s],
 {i, 1, Length[data4]}]

Is it a problem of the position of " " or something else?

Thanks a lot,
regards,
Maria

--- Sab
 25/2/12, Hans Michel <hmichel at cox.net> ha scritto:

Da: Hans Michel <hmichel at cox.net>


Oggetto: RE: Importing data from the web
A: "'maria giovanna dainotti'" <mariagiovannadainotti at yahoo.it>, mathgroup at smc.vnet.net

Data: Sabato 25 febbraio 2012, 16:52


Maria:

Try

data4 = {{"050318", "00111529"}, {"050401", "00113120"}};
 Do[
 ID = data4[[i, 2]];
 url = "http://www.swift.ac.uk/xrt_curves/"; <> ID ;


 s = Import[url, "Text"];
 Print[s],
 {i, 1, Length[data4]}
 ]

The string join you were attempting did not work. I moved the concatenation
of the url string external to the Import this way if you wish to test if the


url exist before import
 you can. Somewhere on
 MathGroup there is code to
test for existence of a URL.

Hans

-----Original Message-----
From: maria giovanna dainotti [mailto:mariagiovannadainotti at yahoo.it]
Sent: Saturday, February 25, 2012 12:55 AM


To: mathgroup at smc.vnet.net
Subject: [mg125214] Importing data from the web


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








--
Bob Hanlon






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