[[TranslatedPages]]
= Comparison between ​[[https://github.com/osmlab/editor-imagery-index|GitHub project Editor Layer Index]] (former Editor Imagery Index) and [[wiki:Maps|JOSM]] imagery lists.

||= color =||= description =||= action =||
|| [[span(style=color: black, black)]] || [[span(style=color: black, informational texts)]] ||  ||
|| [[span(style=color: red, red)]] || [[span(style=color: red, entries in ELI but not in JOSM)]] || [[span(style=color: red, should be checked)]] ||
|| [[span(style=color: red, red)]] || [[span(style=color: red, JOSM shape problems)]] || [[span(style=color: red, should be checked)]] ||
|| [[span(style=color: red, red)]] || [[span(style=color: red, differences between ELI and JOSM)]] || [[span(style=color: red, should be checked)]] ||
|| [[span(style=color: blue, blue)]] || [[span(style=color: blue, entries in JOSM but not in ELI)]] || [[span(style=color: blue, should be checked)]] ||
|| [[span(style=color: blue, blue)]] || [[span(style=color: blue, entries as http in ELI and https in JOSM)]] || [[span(style=color: blue, should be fixed in ELI)]] ||
|| [[span(style=color: blue, blue)]] || [[span(style=color: blue, ELI shape problems)]] || [[span(style=color: blue, should be checked)]] ||
|| [[span(style=color: green, green)]] || [[span(style=color: green, entries which have been checked and are on ignore list (only minor style differences, or sync impossible))]] || [[span(style=color: green, no action required)]] ||
|| [[span(style=color: DarkGoldenrod, yellow)]] || [[span(style=color: DarkGoldenrod, entries which have been checked and are on ignore list (outdated in ELI))]] || [[span(style=color: DarkGoldenrod, should be fixed in ELI)]] ||
|| [[span(style=color: indigo, purple)]] || [[span(style=color: indigo, different ids)]] || [[span(style=color: indigo, not yet decided how to proceed, see [ticket:14655#comment:60])]] ||
|| [[span(style=color: orange, orange)]] || [[span(style=color: orange, new checks)]] || [[span(style=color: orange, new checks in test phase)]] ||
|| [[span(style=color: red, red)]] || [[span(style=color: red, +++ Obsolete skip entry: at the end of this list flags old entries of the ignore list, which are no longer applicable)]] || [[span(style=color: red, should be removed from the ignore list)]] ||

The ignore list is maintained at ImageryCompareIgnores. There is also a more detailed reason for each ignore entry documented.

For entries of the kind "... differs ('aaa' != 'bbb')", the first variant is ELI and the second JOSM.

Note that it is possible that there are yellow or blue entries (ELI problems) which are already fixed there in the sources, but not yet pushed to the combined result file imagery.geojson.

This [source:josm/trunk/scripts/SyncEditorLayerIndex.groovy script] compares the following properties:
* source URL
* type (WMS/TMS/WMTS)
* name
* min_zoom and max_zoom
* country code
* shapes
* icon
* best
* date
* copyright/attribution information (permission-ref and terms-of-use-url (JOSM) both map to license_url (ELI))
* projections
* description
* id
* default

This script does not compare all special properties which are available in only one of the two databases.

ELI-only properties according to [https://github.com/osmlab/editor-layer-index/blob/gh-pages/schema.json ELI-schema] are:
* overlay
* i18n
* permission_osm

JOSM-only properties according to [wiki:Maps#Documentation JOSM-schema] are:
* eula
* logo-url
* logo-image
* terms-of-use-text
* mirror
* no-tile-header
* no-tile-checksum
* metadata-header
* valid-georeference
* last-check
* tile-size
* mod-tile-features

Note that terms-of-use-url isn't converted to license_url in the geojson output.


The compared files are [https://josm.openstreetmap.de/maps maps] and [https://github.com/osmlab/editor-layer-index/raw/gh-pages/imagery.geojson imagery.geojson].

For easier syncing between JOSM and ELI there are two features:
* [https://josm.openstreetmap.de/maps?format=geojson&pretty=true This] file displays the JOSM database in ELIs geojson format. Note that this file may contain JOSM-only properties (see above) which are not (yet) supported by the ELI schema. Possibly you need to remove these properties when syncing to ELI.
* The command `ant dist imageryindexdownload` in the JOSM svn repository produces several files including `imagery_eliout.imagery.xml` which is the ELI database in JOSMs xml format. (ELI has an XML output too, but some attributes are handled different than in the JOSM database (e.g. best) or are missing (e.g. date) and the indentation is different.)

**New data is usually up to date within a minute but may be delayed up to half an hour! **

= Results

[[ImageryCompare]]