<div dir="ltr">>What can I as a map editor do to keep these data files to a reasonable size without compromising data quality? <br><br>According to the "Lean thinking" ( <a href="https://en.wikipedia.org/wiki/Lean_thinking">https://en.wikipedia.org/wiki/Lean_thinking</a> ) we should focus on " eliminating waste"<br>Waste is:<br>* Any polygon or tagging errors ( because we can't use this information, and need lot of space or processing resources ) or any from this: <a href="https://wiki.openstreetmap.org/wiki/Error_categories">https://wiki.openstreetmap.org/wiki/Error_categories</a> ; etc<br>* or any mapping errors ( bad street names ; routing problems: waste for users )<br>* or any not "UpToDate" data/information ( old phone numbers - it is useless, so it is waste )<br><br>some examples:<br><a href="http://area.jochentopf.com/stats/">http://area.jochentopf.com/stats/</a><br>- Errors: Intersections<br>- Errors: Duplicate nodes <br>- Errors: Duplicate segments (<b> ~160.000</b>)<br>- Errors: Open rings ( ~9.000)<br>- Errors: Inner rings with same tags as outer rings<br>- Errors: Wrong role ( <b>~ 700.000 </b>)<br><br>some key problems: ( unused/bad keys is a waste )<br>- <a href="https://taginfo.openstreetmap.org/reports/characters_in_keys#problem">https://taginfo.openstreetmap.org/reports/characters_in_keys#problem</a> ( Keys with possibly problematic characters )<br>- <a href="https://taginfo.openstreetmap.org/reports/characters_in_keys#space">https://taginfo.openstreetmap.org/reports/characters_in_keys#space</a> ( Keys with whitespace )<br>- or my favorite: <br>--- <a href="https://taginfo.openstreetmap.org/keys/latitude#values">https://taginfo.openstreetmap.org/keys/latitude#values</a><br>--- <a href="https://taginfo.openstreetmap.org/keys/LAT#values">https://taginfo.openstreetmap.org/keys/LAT#values</a><br><br>And we have lot of low quality imports we should fix. <br><br><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">>What can I as a map editor</span><div><br></div><div>imho: <br><div>Any quality assurance work helps a lot: <a href="https://wiki.openstreetmap.org/wiki/Quality_assurance">https://wiki.openstreetmap.org/wiki/Quality_assurance</a></div><div>so fixing data problems in your area helps <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">"eliminating waste" and less waste is good for data size <br></span><br><br>Imre<br><br><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">2018-01-18 6:14 GMT+01:00 Oleksiy Muzalyev <span dir="ltr"><<a href="mailto:oleksiy.muzalyev@bluewin.ch" target="_blank">oleksiy.muzalyev@bluewin.ch</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Good morning,<br>
<br>
I started to experiment with the OSM data [1] on a local computer, and I begin to realize how big these data files are. It takes quite a while to load into the local database just the data for one country.<br>
<br>
What can I as a map editor do to keep these data files to a reasonable size without compromising data quality? I mean in the sense, - take care of the pennies and the pounds will take care of themselves?<br>
<br>
I could think of the following three approaches so far:<br>
<br>
- using as short an URL as possible, website=<a href="http://somewebsite.com" rel="noreferrer" target="_blank">http://somewebsite.com</a> instead of website=<a href="http://www.somewebsite.com" rel="noreferrer" target="_blank">http://www.somewebsite<wbr>.com</a> , three characters less; [2]<br>
<br>
- correct phone number ISO format, phone=+12 345 678 90 12 instead of phone=+12 (345) 678 90 12 , two characters less; [3]<br>
<br>
- deleting unnecessary nodes from a way (Shift-Y in JOSM) with consequent verification of its geometry;<br>
<br>
What else, if anything, could be done?<br>
<br>
[1] <a href="https://wiki.openstreetmap.org/wiki/Downloading_data" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org<wbr>/wiki/Downloading_data</a><br>
[2] <a href="https://wiki.openstreetmap.org/wiki/Key:website" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org<wbr>/wiki/Key:website</a><br>
[3] <a href="https://wiki.openstreetmap.org/wiki/Key:phone" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org<wbr>/wiki/Key:phone</a><br>
<br>
With best regards,<br>
Oleksiy<br>
osm: Alex-7<br>
<br>
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</blockquote></div><br></div>