How Prague is opening data

Opening spatial data in Prague
Jáchym ˇCepický1
FOSS4G-Europe 2015
Jáchym ˇCepický1
FOSS4G-Europe 2015
2015-07-17
Hi

2015-07-17
my name is Jachym Cepicky, and I’ve been involved for longer the 10
years in developent of the open source software for geospatial. I
started on the desktop and server side, last years I’m involved more
with development of JavaScript based client applications.
In this talk, I would like to give you brief report about how city of
Prague opened their spatial data

Open GeoInfrastructure http://osgeo.cz
Open GeoInfrastructure http://osgeo.cz
2015-07-17
In Czech republic, we formed an association called ’Open
GeoInfrastructure’ and we are trying to push open source software
and open data to the public administration, education and support
private business on their way to the open source software.

http://geoportalpraha.cz
http://geoportalpraha.cz
2015-07-17
I’m not representative of Prague, but we were asked by
representatives of Planing and development institute of Prague,
whether we could help to deﬁne the way and search for best
practices, how geospatial data could be opened.
You are all aware about OGC and INSPIRE initiative, which are giving
us solid technological and standard background for opening
geospatial data.

2015-07-17
You are all aware about OGC and INSPIRE initiative, which are giving
us solid technological, software and standard background for opening
geospatial data.
Before Prague started to really open the data, several actions were
taken.

http://praguehacks.cz
http://praguehacks.cz
2015-07-17
With help of several non-governmental organisations and big
companies, such as Microsoft, IBM, Vodafone and city of Prague
itself, already two open data hackathons were organised. This helps
to evaluate the data as well as the way, they are opened. It’s always
very nice event, where we have fun and personally I, being a mentor,
have opportunity to lay my hands down on technologies, which I
usually know only from stories, but the attendees of the hackathon
need to use it for whatever reasons (like putting big raster data into
postgis database). I probably do not need to describe to you, how
astonishing for some of the real programmers is, that there is more
then one map projection.

2015-07-17
and we setuped pool, asking the future users of open data, how do
they like to have them. We might be searching wrong, but results of
such pool could be be found anywhere.
The pool was ﬁlled by more then 100 people, and it’s far from being
objective, they were mostly students of various geospatial studies.
But it showed at least something. Among other interestingly high
number of users of desktop open source GIS and preference to OGC
standards over proprietary.

2015-07-17
The whole study is heavy INSPIRE-inspired - where appropriate, we
stick to INSPIRE implementation rules, advice to use OGC OWSs.
Generally speaking, we prefer to use OGC services over ﬁle formats.

http://vdp.cuzk.cz/
http://vdp.cuzk.cz/
2015-07-17
Maybe I should also mention, the we are not living in vacuum,
regarding open data in Czech republic. The State Administration of
Land Surveying and Cadastre is already publishing loads of data
thanks to INSPIRE initivate, like WMS or WMTS of cadastre data.
They are also driving the biggest so called ”base registers” - register
of area identiﬁcation of addresses and real estates. Everybody can
download the whole cadastre data and do whatever he or she might
want to.
Also czech statistical institute is publishing their reports as open data,
which can be paired through common ids with this open geospatial
data.
Interesting is, that people of the State Administration of Land
SUrveying and Cadastre are actively following czech open street map
mailing lists and cooperating with the community on the publishing of
the data. You can imagine, that czech open street mappers are
testing those services extensively.

Opening of spatial data case study,
http://opengeolabs.cz/publikace
Opening of spatial data case study,
http://opengeolabs.cz/publikace
2015-07-17
But this talk is supposed to be about Prague.
Thanks to fundings from Prague, we started to work on case study
about how spatial data could be opened. It’s currently available only
in czech but, we released it under creative commons license so that
everybody can add new updated informations. The case study itself
divided into 3 sections - Introduction, Technical and Law aspects of
data opening and Opening of geospatial data itself. It also has
several attachments, which are mentioning useful open source
software tools, how to deal with temporary data, or for example
description of Atom format.

https:
//github.com/OpenGeoLabs/otevrena-geodata
https:
//github.com/OpenGeoLabs/otevrena-geodata
2015-07-17
we ask you to fork it on github and help with it’s development. Now it
has about 60 pages in pdf ﬁle.

2015-07-17
Based on this study, people from Institute for planning and
Development of Prague started to setup their whole environment, to
publish step-by-step the spatial data. It’s worth to mention, that the
whole environment is based on the classical public administration
stack - Oracle database and Esri ArcGIS servers and clients.

Pre-generated files × spatial data services
Pre-generated files × spatial data services
2015-07-17
They started to publish the data to new setuped server as files, not
with help of OGC web feature service or web coveradge service (I’m
not metioning web mapping service, because I’m speaking about
data opening and publication, not about displaying pictures of it).
On the new setuped server, files are deployed and Atom files are
re-generated.

2015-07-17
The whole script, which enables to publish the data in open way, is
python based, written for ArcGIS and it was open sourced. But
authors of the script are not native coders, so please be kind, if you
look at the code.

http://opendata.iprpraha.cz/feed.xml
2015-07-17
What is possible now, beside standard ogc catalogue service for web
interface, but to browse the data in the atom ﬁles - they are linked
together in tree structure, it’s very effective to navigate a script
through them.

2015-07-17
Here you can see example of the atom document living behind the
graphical user interface

2015-07-17
Data were published inline with Creative Commons CC BY-SA, with
no restrictions for commercial usage.

Topic Hits Format Hits
ortofoto 362005 jpg 255234
3D model 13462 jgw 106522
technical map 2982 polygonZ 5303
isolines 2680 dgn 4790
transport 705 dxf 2794
zoning plan 524 shp 2780
noise map 472 mp 2011
technical infastructure 429 gml 1783
urbanism 332 tif 1430
urbanism 332 json 1213
air 278
urbanism 332
public infastructure 186
urbanism 332
urbanism 332
geology 93
urbanism 332
nature protection 87
Table: Hints during april 2015
Topic Hits Format Hits
ortofoto 362005 jpg 255234
3D model 13462 jgw 106522
technical map 2982 polygonZ 5303
isolines 2680 dgn 4790
transport 705 dxf 2794
zoning plan 524 shp 2780
noise map 472 mp 2011
technical infastructure 429 gml 1783
urbanism 332 tif 1430
urbanism 332 json 1213
air 278
urbanism 332
public infastructure 186
urbanism 332
urbanism 332
geology 93
urbanism 332
nature protection 87
Table: Hints during april 2015
2015-07-17
Vector data are usually pregenerated in 2 coordinate reference
systems and several formats (shapeﬁle and geojson, gml, dxf with
future GeoPackge support). Raster data are usually available as
jpegs and geotiffs.
This table is representing in the left part topics of interests and their
hint on the right side it’s representing data format puplarity.

2015-07-17
I’m absolutely not able to interpret this image, I took it from the
presentation of mr. ˇCtyroky, head of the GIS department of institute of
planing and development of Prague, it’s supposed illustrate statistics
of data dispension and money income from various sources for the
institute, which they charged for the data.
You can see that in the last month - believe me, it’s the month, when
they opened the data, there is like no money income from the e-shop.
People started to download the data for free.
What was not going down is ammount of data, handed out on the
shelter - those are usually architecs, who need something special.

2015-07-17
Z´avˇer
Big thanks to city of Prague and it’s institute for development and
planing, for actively supporting open data and for actively cooperating
with the community

Questions?
jachym.cepicky@opengeolabs.cz
http://opengeolabs.cz
@jachymc
Questions?
jachym.cepicky@opengeolabs.cz
http://opengeolabs.cz
@jachymc
2015-07-17
Z´avˇer

How Prague is opening data

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