Quality Assurance Tools script - OpenStreetMap Wiki
Quality Assurance Tools script
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Quality Assurance Tools script
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This script could be used in JOSM to download errors from different error detectors, showing them as markers layers and check them one after another.
The tool is currently not functional, and is not under active development. Please do not install or use it
Contents
Current State of the Tool
How To Use
Features
Supported QA Tools
Usage
5.1
Errors downloading
5.2
Errors correction
5.3
Favourite zones
5.4
Local file
Development
See also
Current State of the Tool
The Quality Assurance Tool is no longer in development and is not functional in the most recent versions of JOSM. Please do not attempt to use this tool in the current state.
The repository of the tool is available for access
. It is possible for someone to pick up development of the tool with sufficient coding background, and interest. Until then this page is left as a reference and advertisement for what the tool was capable of, and what features should be available if someone were to resume development
How To Use
How to
install/update
How to use:
video
Features
Downloading errors from the menu.
Fixing errors one by one.
Errors download
of currently observed area in JOSM, from different error detectors. The type of error can be selected from a menu or a toggle dialog, in the second case, multiple kinds of error can be downloaded at once.
Progressive correction
of downloaded errors by clicking "next", "next", "next"...
Automatic flag to server (
KeepRight
Osmose
Errori in OSM Italia Grp
housenumbervalidator
) of
false positive
errors or information gathering for manual report (
OSM Inspector
) to the tool admin.
Flag errors to be
ignored
. They will be stored on a local black-list file and not shown to the mapper again.
Clickable markers
for zooming/downloading a specific error. The level of the clicked marker must be activated.
Multiple
favourite zones
can be set so that only errors within it will be downloaded. It can be a rectangle, a polygon drawn by hand or an administrative boundary with specific tags (
more info
).
A list of
favourites checks
can be created by selecting different checks belonging to different tools and find them again quickly.
local GPX file
can be opened. Its waypoints will be used as positions that the user can visit in sequence to check for errors (
more info
).
Supported QA Tools
Tool
Max number of errors downloaded
Flag false positives
Flag corrected error
OSM Inspector
[1]
(not all checks)
None
No
No
KeepRight
[2]
10000
Yes
Yes
Osmose
[3]
500
Yes
Yes
Errori OSM Italia Grp
[4]
None
Yes
No
housenumbervalidator
[5]
None
Yes
Yes
Opening hours validator
None
No
No
Error detecting tools may be wrong
and show errors that are not really there.
If you have any doubt, don't modify the data
and click the
"Ignore button"
. If you want, send a message to the mapper that created that data and talk with them.
Usage
Video
Errors downloading
1. Zoom to the zone of your interest, in JOSM
2. download the errors from the "QA Tools"
or the download
dialog
"QA Tools" menu.
Download dialog.
Errors correction
Correct the downloaded errors one by one.
Show information about the current error.
Flag this error to the server as a false positive.
KeepRight
Osmose
Errori OSM Italia Grp
housenumbervalidator
Gather information of this error on
QA Tools -> False positive
menu, to inform the admin of the service.
OSM Inspector
I don't know what to do. Don't show me again this error and go to the next.
Flag this error to the server as corrected.
KeepRight
Osmose
housenumbervalidator
Go to the next error.
Favourite zones
Editing favourite zones from Preferences
When a
favourite zone
is active, only errors within this area will be downloaded.
You can create a new favourite zone in one of these ways:
from the Preferences (see
video
from min 1:50)
by adding one or more text file into "qat_script/configuration/favourite_zones" directory.
A file can contain a bbox, for a rectangular zone or a
WKT
geometry. In the second case, just copy a geometry from QGIS, paste it on a text file and, optionally, add a country code after the geometry description (e.g. file Rome.txt, content "MULTYPOLYGON(...)|IT").
Pre-built zones:
regions and counties of Italy
Notes:
Holes in zones are not considered. If a favourite zone is created from a boundary only outer ways are used.
Warning
. When a tool has a maximum number of errors that can be downloaded (10000 from KeepRight, 500 from Osmose), it may happen that not all the errors of the zone are shown, depending on the zone shape and errors position. If you want to be sure that you corrected all the errors of the zone, download them again after having corrected some or choose a rectangular favourite zone.
Example (see
image
): suppose there are 80 errors in the favourite zone. The script downloads a maximum of 100 errors (green) from the rectangle (bbox) and shows to the user 60 errors falling inside the area (40 fall outside, top right). After 20 of 60 errors area corrected it will be possible to download the remaining 20 errors (red).
Local file
From QA Tools menu it is possible to open a
local GPX file
whose waypoints are used as errors positions.
Anyone who finds errors while analyzing OSM data may create a GPX with these errors as waypoints and ask a local community to check them one by one with QATs. The script can read the content of
desc
and
osmid
tags from the GPX file to:
show a description of the error in in QATs dialog
automatically download and select the affected OSM object.
Example:
Hints on how to create a suitable GPX from a PostGIS database created with
osmosis
SQL:
SELECT 'w'||id AS osmid, 'This is a self intersecting way' AS desc, ST_StartPoint(linestring) AS geometry
FROM ways
WHERE
sql to find errors
Export to GPX:
ogr2ogr -f "GPX"
filename
"PG:host=localhost user=
username
port=5432 dbname=
dbname
password=
pwd
" -sql "
sql
" -nlt "POINT" -dsco GPX_USE_EXTENSIONS=YES
Development
Code: on
GitHub
Author:
Simone F.
Contributors and credits:
Gubaer
, mcheck,
Poppei82
operon
Xmypblu
, QA tools authors ... see
this page
for credits.
Note
. I wrote this script because I could not find a JOSM plugin which could fetch errors from multiple QA tools. I just know a bit of Python and I would be happy if this code could be used or could inspire someone to create a regular Java plugin with these features, or to extend an existing plugin.
If you want to translate the script's gui to your language, please translate
this
page.
See also
Errors correction:
Notes
Maproulette
Mapdust Plugin
Development:
Scripting Plugin
JOSM API
Retrieved from "
Categories
Quality Assurance
JOSM plugin
Python
Hidden categories:
Pages unavailable in Spanish
Pages unavailable in Dutch
Pages unavailable in Japanese
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