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6 <title>Petter Reinholdtsen: entries from October
2017</title>
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15 <a href=
"http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen
</a>
22 <h3>Entries from October
2017.
</h3>
26 <a href=
"http://people.skolelinux.org/pere/blog/Web_services_for_writing_academic_LaTeX_papers_as_a_team.html">Web services for writing academic LaTeX papers as a team
</a>
32 <p>I was surprised today to learn that a friend in academia did not
33 know there are easily available web services available for writing
34 LaTeX documents as a team. I thought it was common knowledge, but to
35 make sure at least my readers are aware of it, I would like to mention
36 these useful services for writing LaTeX documents. Some of them even
37 provide a WYSIWYG editor to ease writing even further.
</p>
39 <p>There are two commercial services available,
<a
40 href=
"https://sharelatex.com">ShareLaTeX
</a> and
<a
41 href=
"https://overleaf.com">Overleaf
</a>. They are very easy to use.
42 Just start a new document, select which publisher to write for (ie
43 which LaTeX style to use), and start writing. Note, these two have announced their
44 intention to join forces, so soon it will only be one joint service.
45 I've used both for different documents, and they work just fine.
46 While
<a href=
"https://github.com/sharelatex/sharelatex">ShareLaTeX is
47 free software
</a>, while the latter is not. According to
<a
48 href=
"https://www.overleaf.com/help/17-is-overleaf-open-source">a
49 announcement from Overleaf
</a>, they plan to keep the ShareLaTeX code
50 base maintained as free software.
</p>
52 But these two are not the only alternatives.
53 <a href=
"https://app.fiduswriter.org/">Fidus Writer
</a> is another free
54 software solution with
<a href=
"https://github.com/fiduswriter">the
55 source available on github
</a>. I have not used it myself. Several
56 others can be found on the nice
57 <a href=
"https://alternativeto.net/software/sharelatex/">alterntiveTo
60 <p>If you like Google Docs or Etherpad, but would like to write
61 documents in LaTeX, you should check out these services. You can even
62 host your own, if you want to. :)
</p>
69 Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/english">english
</a>.
74 <div class=
"padding"></div>
78 <a href=
"http://people.skolelinux.org/pere/blog/Locating_IMDB_IDs_of_movies_in_the_Internet_Archive_using_Wikidata.html">Locating IMDB IDs of movies in the Internet Archive using Wikidata
</a>
84 <p>Recently, I needed to automatically check the copyright status of a
85 set of
<a href=
"http://www.imdb.com/">The Internet Movie database
86 (IMDB)
</a> entries, to figure out which one of the movies they refer
87 to can be freely distributed on the Internet. This proved to be
88 harder than it sounds. IMDB for sure list movies without any
89 copyright protection, where the copyright protection has expired or
90 where the movie is lisenced using a permissive license like one from
91 Creative Commons. These are mixed with copyright protected movies,
92 and there seem to be no way to separate these classes of movies using
93 the information in IMDB.
</p>
95 <p>First I tried to look up entries manually in IMDB,
96 <a href=
"https://www.wikipedia.org/">Wikipedia
</a> and
97 <a href=
"https://www.archive.org/">The Internet Archive
</a>, to get a
98 feel how to do this. It is hard to know for sure using these sources,
99 but it should be possible to be reasonable confident a movie is "out
100 of copyright" with a few hours work per movie. As I needed to check
101 almost
20,
000 entries, this approach was not sustainable. I simply
102 can not work around the clock for about
6 years to check this data
105 <p>I asked the people behind The Internet Archive if they could
106 introduce a new metadata field in their metadata XML for IMDB ID, but
107 was told that they leave it completely to the uploaders to update the
108 metadata. Some of the metadata entries had IMDB links in the
109 description, but I found no way to download all metadata files in bulk
110 to locate those ones and put that approach aside.
</p>
112 <p>In the process I noticed several Wikipedia articles about movies
113 had links to both IMDB and The Internet Archive, and it occured to me
114 that I could use the Wikipedia RDF data set to locate entries with
115 both, to at least get a lower bound on the number of movies on The
116 Internet Archive with a IMDB ID. This is useful based on the
117 assumption that movies distributed by The Internet Archive can be
118 legally distributed on the Internet. With some help from the RDF
119 community (thank you DanC), I was able to come up with this query to
120 pass to
<a href=
"https://query.wikidata.org/">the SPARQL interface on
124 SELECT ?work ?imdb ?ia ?when ?label
127 ?work wdt:P31/wdt:P279* wd:Q11424.
128 ?work wdt:P345 ?imdb.
131 ?work wdt:P577 ?when.
132 ?work rdfs:label ?label.
133 FILTER(LANG(?label) = "en").
138 <p>If I understand the query right, for every film entry anywhere in
139 Wikpedia, it will return the IMDB ID and The Internet Archive ID, and
140 when the movie was released and its English title, if either or both
141 of the latter two are available. At the moment the result set contain
142 2338 entries. Of course, it depend on volunteers including both
143 correct IMDB and The Internet Archive IDs in the wikipedia articles
144 for the movie. It should be noted that the result will include
145 duplicates if the movie have entries in several languages. There are
146 some bogus entries, either because The Internet Archive ID contain a
147 typo or because the movie is not available from The Internet Archive.
148 I did not verify the IMDB IDs, as I am unsure how to do that
151 <p>I wrote a small python script to extract the data set from Wikidata
152 and check if the XML metadata for the movie is available from The
153 Internet Archive, and after around
1.5 hour it produced a list of
2097
154 free movies and their IMDB ID. In total,
171 entries in Wikidata lack
155 the refered Internet Archive entry. I assume the
70 "disappearing"
156 entries (ie
2338-
2097-
171) are duplicate entries.
</p>
158 <p>This is not too bad, given that The Internet Archive report to
159 contain
<a href=
"https://archive.org/details/feature_films">5331
160 feature films
</a> at the moment, but it also mean more than
3000
161 movies are missing on Wikipedia or are missing the pair of references
164 <p>I was curious about the distribution by release year, and made a
165 little graph to show how the amount of free movies is spread over the
168 <p><img src=
"http://people.skolelinux.org/pere/blog/images/2017-10-25-verk-i-det-fri-filmer.png"></p>
170 <p>I expect the relative distribution of the remaining
3000 movies to
173 <p>If you want to help, and want to ensure Wikipedia can be used to
174 cross reference The Internet Archive and The Internet Movie Database,
175 please make sure entries like this are listed under the "External
176 links" heading on the Wikipedia article for the movie:
</p>
179 * {{Internet Archive film|id=FightingLady}}
180 * {{IMDb title|id=
0036823|title=The Fighting Lady}}
183 <p>Please verify the links on the final page, to make sure you did not
184 introduce a typo.
</p>
186 <p>Here is the complete list, if you want to correct the
171
187 identified Wikipedia entries with broken links to The Internet
188 Archive:
<a href=
"http://www.wikidata.org/entity/Q1140317">Q1140317
</a>,
189 <a href=
"http://www.wikidata.org/entity/Q458656">Q458656
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"http://www.wikidata.org/entity/Q458656">Q458656
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</a>,
346 <a href=
"http://www.wikidata.org/entity/Q7857590">Q7857590
</a>,
347 <a href=
"http://www.wikidata.org/entity/Q3372526">Q3372526
</a>,
348 <a href=
"http://www.wikidata.org/entity/Q3372642">Q3372642
</a>,
349 <a href=
"http://www.wikidata.org/entity/Q3372816">Q3372816
</a>,
350 <a href=
"http://www.wikidata.org/entity/Q3372909">Q3372909
</a>,
351 <a href=
"http://www.wikidata.org/entity/Q7959649">Q7959649
</a>,
352 <a href=
"http://www.wikidata.org/entity/Q7977485">Q7977485
</a>,
353 <a href=
"http://www.wikidata.org/entity/Q7992684">Q7992684
</a>,
354 <a href=
"http://www.wikidata.org/entity/Q3817966">Q3817966
</a>,
355 <a href=
"http://www.wikidata.org/entity/Q3821852">Q3821852
</a>,
356 <a href=
"http://www.wikidata.org/entity/Q3420907">Q3420907
</a>,
357 <a href=
"http://www.wikidata.org/entity/Q3429733">Q3429733
</a>,
358 <a href=
"http://www.wikidata.org/entity/Q774474">Q774474
</a></p>
364 Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/english">english
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett
</a>.
369 <div class=
"padding"></div>
373 <a href=
"http://people.skolelinux.org/pere/blog/A_one_way_wall_on_the_border_.html">A one-way wall on the border?
</a>
379 <p>I find it fascinating how many of the people being locked inside
380 the proposed border wall between USA and Mexico support the idea. The
381 proposal to keep Mexicans out reminds me of
382 <a href=
"http://www.history.com/news/10-things-you-may-not-know-about-the-berlin-wall">the
383 propaganda twist from the East Germany government
</a> calling the wall
384 the “Antifascist Bulwark” after erecting the Berlin Wall, claiming
385 that the wall was erected to keep enemies from creeping into East
386 Germany, while it was obvious to the people locked inside it that it
387 was erected to keep the people from escaping.
</p>
389 <p>Do the people in USA supporting this wall really believe it is a
390 one way wall, only keeping people on the outside from getting in,
391 while not keeping people in the inside from getting out?
</p>
397 Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/english">english
</a>.
402 <div class=
"padding"></div>
406 <a href=
"http://people.skolelinux.org/pere/blog/Generating_3D_prints_in_Debian_using_Cura_and_Slic3r__prusa_.html">Generating
3D prints in Debian using Cura and Slic3r(-prusa)
</a>
412 <p>At my nearby maker space,
413 <a href=
"http://sonen.ifi.uio.no/">Sonen
</a>, I heard the story that it
414 was easier to generate gcode files for theyr
3D printers (Ultimake
2+)
415 on Windows and MacOS X than Linux, because the software involved had
416 to be manually compiled and set up on Linux while premade packages
417 worked out of the box on Windows and MacOS X. I found this annoying,
418 as the software involved,
419 <a href=
"https://github.com/Ultimaker/Cura">Cura
</a>, is free software
420 and should be trivial to get up and running on Linux if someone took
421 the time to package it for the relevant distributions. I even found
422 <a href=
"https://bugs.debian.org/706656">a request for adding into
423 Debian
</a> from
2013, which had seem some activity over the years but
424 never resulted in the software showing up in Debian. So a few days
425 ago I offered my help to try to improve the situation.
</p>
427 <p>Now I am very happy to see that all the packages required by a
428 working Cura in Debian are uploaded into Debian and waiting in the NEW
429 queue for the ftpmasters to have a look. You can track the progress
431 <a href=
"https://qa.debian.org/developer.php?email=3dprinter-general%40lists.alioth.debian.org">the
432 status page for the
3D printer team
</a>.
</p>
434 <p>The uploaded packages are a bit behind upstream, and was uploaded
435 now to get slots in
<a href=
"https://ftp-master.debian.org/new.html">the NEW
436 queue
</a> while we work up updating the packages to the latest
437 upstream version.
</p>
439 <p>On a related note, two competitors for Cura, which I found harder
440 to use and was unable to configure correctly for Ultimaker
2+ in the
441 short time I spent on it, are already in Debian. If you are looking
442 for
3D printer "slicers" and want something already available in
444 <a href=
"https://tracker.debian.org/pkg/slic3r">slic3r
</a> and
445 <a href=
"https://tracker.debian.org/pkg/slic3r-prusa">slic3r-prusa
</a>.
446 The latter is a fork of the former.
</p>
452 Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/debian">debian
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/english">english
</a>.
457 <div class=
"padding"></div>
461 <a href=
"http://people.skolelinux.org/pere/blog/Mangler_du_en_skrue__eller_har_du_en_skrue_l_s_.html">Mangler du en skrue, eller har du en skrue løs?
</a>
467 Når jeg holder på med ulike prosjekter, så trenger jeg stadig ulike
468 skruer. Det siste prosjektet jeg holder på med er å lage
469 <a href=
"https://www.thingiverse.com/thing:676916">en boks til en
470 HDMI-touch-skjerm
</a> som skal brukes med Raspberry Pi. Boksen settes
471 sammen med skruer og bolter, og jeg har vært i tvil om hvor jeg kan
472 få tak i de riktige skruene. Clas Ohlson og Jernia i nærheten har
473 sjelden hatt det jeg trenger. Men her om dagen fikk jeg et fantastisk
474 tips for oss som bor i Oslo.
475 <a href=
"http://www.zachskruer.no/">Zachariassen Jernvare AS
</a> i
476 <a href=
"http://www.openstreetmap.org/?mlat=59.93421&mlon=10.76795#map=19/59.93421/10.76795">Hegermannsgate
477 23A på Torshov
</a> har et fantastisk utvalg, og åpent mellom
09:
00 og
478 17:
00. De selger skruer, muttere, bolter, skiver etc i løs vekt, og
479 så langt har jeg fått alt jeg har lett etter. De har i tillegg det
480 meste av annen jernvare, som verktøy, lamper, ledninger, etc. Jeg
481 håper de har nok kunder til å holde det gående lenge, da dette er en
482 butikk jeg kommer til å besøke ofte. Butikken er et funn å ha i
483 nabolaget for oss som liker å bygge litt selv. :)
</p>
489 Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/norsk">norsk
</a>.
494 <div class=
"padding"></div>
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"text-align: right;"><a href=
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"http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (
30)
</a></li>
813 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (
9)
</a></li>
815 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (
18)
</a></li>
817 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/h264">h264 (
20)
</a></li>
819 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/intervju">intervju (
42)
</a></li>
821 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (
15)
</a></li>
823 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/kart">kart (
20)
</a></li>
825 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/ldap">ldap (
9)
</a></li>
827 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/lenker">lenker (
8)
</a></li>
829 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (
2)
</a></li>
831 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (
1)
</a></li>
833 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (
8)
</a></li>
835 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (
39)
</a></li>
837 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (
9)
</a></li>
839 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/norsk">norsk (
293)
</a></li>
841 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/nuug">nuug (
189)
</a></li>
843 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (
33)
</a></li>
845 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/open311">open311 (
2)
</a></li>
847 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (
65)
</a></li>
849 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/personvern">personvern (
104)
</a></li>
851 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/raid">raid (
1)
</a></li>
853 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/reactos">reactos (
1)
</a></li>
855 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/reprap">reprap (
11)
</a></li>
857 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/rfid">rfid (
3)
</a></li>
859 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/robot">robot (
10)
</a></li>
861 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/rss">rss (
1)
</a></li>
863 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/ruter">ruter (
5)
</a></li>
865 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (
2)
</a></li>
867 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (
53)
</a></li>
869 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (
4)
</a></li>
871 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (
5)
</a></li>
873 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/standard">standard (
55)
</a></li>
875 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (
6)
</a></li>
877 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (
12)
</a></li>
879 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (
52)
</a></li>
881 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (
3)
</a></li>
883 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/usenix">usenix (
2)
</a></li>
885 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/valg">valg (
9)
</a></li>
887 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/video">video (
59)
</a></li>
889 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (
4)
</a></li>
891 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/web">web (
40)
</a></li>
897 <p style=
"text-align: right">
898 Created by
<a href=
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