[ddj] scraping data with a bookmarklet: Convextra

[Friedrich Lindenberg]

Hey,

On Fri, Apr 12, 2013 at 11:01 AM, mirko.lorenz at gmail.com <
mirko.lorenz at gmail.com> wrote:

> With Needlebase you where able to define what needed to be scraped from an
> overview page (e.g. list of all parliament members in Germany), then you
> could define what links to follow and what fields to scrape. With a bit of
> effort you created a script for multipage scraping and could sent out the
> application to collect the defined information - all the results where then
> collected into a table. Neat.


I was playing with the new ScraperWiki prototype yesterday (yay!) and
they've made this much more DIY/hard-core: you can basically make your own
apps on top of their platform now. I'm wondering if one could build a
Needlebase-style WYSIWYG multi-level scraper on top of it. Basically: fetch
remote web sites, add JS to allow highlighting of data fields and then
extract data automatically based on these patterns.

Would anybody be up for exploring this?

- Friedrich



>
> Kind of amazing that there was a good solution (as said in another mail:
> maybe a bit too good) and that it simply was taken down. There was no real
> communication why that happened, I had contacted the team directly even.
>
> Point is: There would be an opportunity here, although I am not sure
> whether that could be sustainable.
>
> /Mirko
>
>
> 2013/4/12 Michael Bauer <michael.bauer at okfn.org>
>
>> One thing that struck me interesting with Convextra is the multi-page
>> scraping it does. This was unseen to me (never used needlebase though).
>>
>> Michael
>>
>> On Thu, Apr 11, 2013 at 02:56:37PM +0200, mirko.lorenz at gmail.com wrote:
>> > I wish we would have Needlebase back. Would have solved a lot of issues,
>> > but was probably too good, e.g. it was possible to scrape page by page
>> with
>> > relative ease.
>> >
>> > 2013/4/11 <SMachlis at computerworld.com>
>> >
>> > > Agreed, although if you're only scraping a couple of pages it's not
>> too
>> > > much of a problem to select all, copy, and paste into a local
>> spreadsheet.
>> > >
>> > > ________________________________________
>> > >
>> > > Indeed and I would still recommend it over a purely web based
>> service. It
>> > > would be great if the scraper extension would allow local saving -
>> instead
>> > > of google docs export.
>> > >
>> > > Michael
>> > >
>> > >
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>>
>> --
>> Data Wrangler with the Open Knowledge Foundation (OKFN.org)
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