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<p>Dear OSM Aficionados,</p>
<p>maybe of interest as a first preview on some developments around
osm history analytics...</p>
<pre wrap=""><a class="moz-txt-link-freetext" href="http://giscienceblog.uni-hd.de/2018/10/10/explore-the-ohsome-osm-history-of-whole-germany/">http://giscienceblog.uni-hd.de/2018/10/10/explore-the-ohsome-osm-history-of-whole-germany/</a>
</pre>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;"><a class="external-link"
rel="nofollow"
href="https://heigit.org/big-spatial-data-analytics-en/"
style="padding: 0px; margin: 0px; text-decoration: none; color:
rgb(119, 34, 34); border-bottom: 1px dashed rgb(153, 102, 51);">Our</a><span> </span>new<a
class="external-link" rel="nofollow"
href="https://ohsome.org/apps/dashboard/" style="padding: 0px;
margin: 0px; text-decoration: none; color: rgb(119, 34, 34);
border-bottom: 1px dashed rgb(153, 102, 51);"><span> </span>ohsome
dashboard</a><span> </span>is another preview on what is and
will be possible with our <em style="padding: 0px; margin: 0px;">ohsome</em><span> </span>OpenStreetMap
history analytics platform. Behind the scenes, we added support
for the <a class="external-link" rel="nofollow"
href="https://ignite.apache.org/" style="padding: 0px; margin:
0px; text-decoration: none; color: rgb(119, 34, 34);
border-bottom: 1px dashed rgb(153, 102, 51);">Apache Ignite</a><span> </span>big
data framework and deployed an instance using the full OSM history
data of whole Germany on Heidelberg University’s cloud computing
infrastructure <a class="external-link" rel="nofollow"
href="https://heicloud.uni-heidelberg.de/" style="padding: 0px;
margin: 0px; text-decoration: none; color: rgb(119, 34, 34);
border-bottom: 1px dashed rgb(153, 102, 51);">heiCLOUD</a>. Apache
Ignite<span style="padding: 0px; margin: 0px;"><span> </span>is an
open-source distributed database, caching and processing
platform designed to store and compute on large volumes of data
across a cluster of nodes. This<span> </span></span>enables
larger and faster queries, e.g. the processing of common requests
like counting buildings of a larger city at a monthly time
resolution is typically performed in less than one second and even
only takes just a few seconds for a whole country.</p>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;">The dashboard using
Germany as example data is based on the <a class="external-link"
rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/05/28/ohsome-nepal-dashboard-supports-admin-boundary-selection/"
style="padding: 0px; margin: 0px; text-decoration: none; color:
rgb(119, 34, 34); border-bottom: 1px dashed rgb(153, 102, 51);">Nepal
dashboard</a>, but includes <span class="inline-comment-marker"
style="padding: 0px; margin: 0px;">more</span><span> </span>functionality:
It is more generic and flexible as it allows custom filtering<strong
style="padding: 0px; margin: 0px;"><span> </span></strong><em
style="padding: 0px; margin: 0px;">of all available OSM tags and
types</em>, not only buildings or roads. The dashboard now
includes administrative boundaries from states down to city-level,
which enable one to make an easier selection of relevant search
areas. Using the dashboard, generating accurate statistics about
the historical development of OSM data for an arbitrary region it
is now as easy as pie:</p>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;"><a
href="http://k1z.blog.uni-heidelberg.de/files/2018/10/dashboard_query_germany.png"
style="padding: 0px; margin: 0px; text-decoration: none; color:
rgb(119, 34, 34); border-bottom: 1px dashed rgb(153, 102, 51);"><img
class="aligncenter size-medium wp-image-10198"
src="http://k1z.blog.uni-heidelberg.de/files/2018/10/dashboard_query_germany-300x188.png"
alt="" style="padding: 4px 10px 10px 4px; margin: 0px;
background: url("img/shadow.gif") right bottom
no-repeat; border-right: none; border-bottom: none;
border-image: initial; border-top: 1px solid rgb(238, 238,
238); border-left: 1px solid rgb(238, 238, 238);" width="300"
height="188"></a></p>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;"><a
href="http://k1z.blog.uni-heidelberg.de/files/2018/10/dashboard_result_germany.png"
style="padding: 0px; margin: 0px; text-decoration: none; color:
rgb(119, 34, 34); border-bottom: 1px dashed rgb(153, 102, 51);"><img
class="aligncenter size-medium wp-image-10199"
src="http://k1z.blog.uni-heidelberg.de/files/2018/10/dashboard_result_germany-300x191.png"
alt="" style="padding: 4px 10px 10px 4px; margin: 0px;
background: url("img/shadow.gif") right bottom
no-repeat; border-right: none; border-bottom: none;
border-image: initial; border-top: 1px solid rgb(238, 238,
238); border-left: 1px solid rgb(238, 238, 238);" width="300"
height="191"></a></p>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;">As you may know, the
idea of the ohsome platform is to enable intrinsic quality
analytics and understand the development of OSM through time and
space for both, researchers, as well as the OSM community. We are
looking forward to hear your feedback and ideas for improvement.
Please feel free to contact us with your comments or to contribute
to the open source development. Future work will focus on
enlarging the supported region towards a global scale, as well as
adding further<span> </span><span class="inline-comment-marker"
style="padding: 0px; margin: 0px;">functionality</span><span
style="padding: 0px; margin: 0px;">.</span></p>
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;
color: rgb(51, 51, 51); font-family: arial, verdana, tahoma,
arial, sans-serif; font-size: 12.16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
left; text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;"><em style="padding: 0px;
margin: 0px;">Previous ohsome architecture blog posts:</em></p>
<ul style="padding: 0px 1em; margin: 0px 1em; list-style-image:
url("img/bullet.png"); color: rgb(51, 51, 51);
font-family: arial, verdana, tahoma, arial, sans-serif; font-size:
12.16px; font-style: normal; font-variant-ligatures: normal;
font-variant-caps: normal; font-weight: 400; letter-spacing:
normal; orphans: 2; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;">
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><a class="external-link" rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/02/22/introducing-the-ohsome-osm-history-analytics-platform/"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed rgb(153,
102, 51);">introduction of the ohsome data analysis platform</a></li>
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><a class="external-link" rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/05/18/ohsome-a-high-level-architectual-overview-of-the-osm-history-analytics-platform/"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed rgb(153,
102, 51);">high level architectural overview</a></li>
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><a class="external-link" rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/04/13/a-brief-intro-to-the-openstreetmap-history-database-oshdb-api/"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed rgb(153,
102, 51);">OSHDB: ohsome’s data processing backbone</a></li>
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><a class="external-link" rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/04/26/the-ohsome-api-dynamic-osm-statistics-for-real-world-applications/"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed rgb(153,
102, 51);">ohsome api: introduction</a></li>
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><a class="external-link" rel="nofollow"
href="http://k1z.blog.uni-heidelberg.de/2018/09/03/documentation-of-the-ohsome-api/"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed rgb(153,
102, 51);">Documentation of the ohsome API</a></li>
</ul>
<div style="padding: 0px; margin: 0px; color: rgb(51, 51, 51);
font-family: arial, verdana, tahoma, arial, sans-serif; font-size:
12.16px; font-style: normal; font-variant-ligatures: normal;
font-variant-caps: normal; font-weight: 400; letter-spacing:
normal; orphans: 2; text-align: left; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration-style:
initial; text-decoration-color: initial;">
<p style="padding: 0px; margin: 0.7em 0px; line-height: 1.8em;">Selected
Literature:</p>
<ul style="padding: 0px 1em; margin: 0px 1em; list-style-image:
url("img/bullet.png");">
<li style="padding: 0px; margin: 0px 0px 0.3em; line-height:
1.6em;"><em style="padding: 0px; margin: 0px;"><span
style="padding: 0px; margin: 0px;">Auer, M.; Eckle, M.;
Fendrich, S.; Griesbaum, L.; Kowatsch, F.; Marx, S.;
Raifer, M.; Schott, M.; Troilo, R.; Zipf, A. (2018):<span> </span></span><a
class="external-link" rel="nofollow"
href="https://www.researchgate.net/publication/325397280_Towards_Using_the_Potential_of_OpenStreetMap_History_for_Disaster_Activation_Monitoring?_sg=nBn9h8xFgGzDnJfAZpynD7CPXKlTvG3Alubu6u0pzWZ9hwAG2Kr4zXFyfKW8bL2S0MH5teg9qZuVqW4o9-bwHa6JcrjfA9Vpk9NyO1Jo.EjujxEyfhVZeWeKGY46xhc7rWN1A-Ri_HJvd0OnoUklQEr2Z0x6KmwRJhw-xRzgqRN-3NZqj5sPoAnV_2He-8w"
style="padding: 0px; margin: 0px; text-decoration: none;
color: rgb(119, 34, 34); border-bottom: 1px dashed
rgb(153, 102, 51);">Towards Using the Potential of
OpenStreetMap History for Disaster Activation Monitoring</a><span
style="padding: 0px; margin: 0px;">. ISCRAM 2018.
Rochester. NY. US.</span></em></li>
</ul>
</div>
<pre class="moz-signature" cols="72">-
GIScience Research Group Heidelberg University
<a class="moz-txt-link-freetext" href="http://uni-heidelberg.de/gis">http://uni-heidelberg.de/gis</a>
Heidelberg Institute for Geoinformation Technology
<a class="moz-txt-link-freetext" href="http://heigit.org">http://heigit.org</a>
</pre>
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