Achavi
| Achavi | |
|---|---|
 | |
| Author: | nrenner/achavi/graphs/contributors GitHub |
| License: | MIT License (free of charge) |
| Platform: | Web |
| Version: | (2018-11-21) |
| Language: | english |
| Website: | https://github.com/nrenner/achavi |
| Source code: | nrenner/achavi GitHub |
| Programming languages: | JavaScript, HTML, and CSS |
achavi (Augmented OSM Change Viewer) displays OpenStreetMap changes based on the Overpass API Augmented Delta (adiff) query and the returned Augmented Diff format.
Links
- Sourcecode
- Instances on the web:
Changeset Viewer
Achavi's changeset viewer, can be used to see the contents of a changeset displayed on a map. A very similar tool is OSM History Viewer.
This feature can easily be accessed via the two available services of WhoDidIt (the "[A]" link in the popup after you click a highlighted rectangle).
Limitations
- Does not work with changesets older than September 2012, see Overpass API attic data restriction and screenshot on Display_of_changesets_before_09.2012.
- Changesets from the last few minutes won't appear. The Overpass API needs to sync first.
- The changeset feature is rather experimental and has some known issues.
- For large (big map section) changesets visualization not done, e.g. example changeset occasional information message appears: overpass-api.de says: "osmDiff: runtime error: Query run out of memory using about 2048 MB of RAM."
Browser extensions
Browser add-ons to jump from OSM changeset page to achavi:
- Achavi Button - Firefox
- OSM Smart Menu - Firefox, Chrome & Opera, + OSM History Viewer
- JumpToOSMChangesetAnalyzer - Firefox & Chrome, + OSMCha
Greasemonkey/Userscripts
- OpenStreetMap Changeset Analyze URLs - adds achavi-link and OSMCha-link to every OSM changeset page [1]
Bookmarklet
Use a bookmarklet to conveniently access the tool! By clicking on the bookmarklet (or opening it via a keyword) while visiting a changeset page such as 18986223, you will get a new tab/window with the analysis page for that changeset.
javascript:(function(){ id=location.href.match(/www\.openstreetmap\.org\/changeset\/(\d+)/); if(id!=null){window.open('https://overpass-api.de/achavi/?changeset='+id[1]);} else{alert('This is not a valid OSM changeset page.')} })()
(Credits to Eugene and The knife)
Augmented Delta ("adiff") Viewer
Achavi can also display the results of your custom Augmented Diff query. Drag&drop a file onto the map or use the url parameter:
https://overpass-api.de/achavi/?url=the_urlencoded_path_to_the_xml |
- The results should be in a valid adiff xml format.
- Do not forgot to add the full geometry to each object with the geom parameter of the out action.
- If your custom url does not use secure connection (https) then you also need to change the url of the achavi to http.