File:Extension.png

From OpenStreetMap Wiki
Jump to navigation Jump to search

Extension.png(756 × 310 pixels, file size: 20 KB, MIME type: image/png)

Summary

A visual depiction of how using a sight line along a building face can help to reduce the position ambiguity of a GPS unit. Standing close to a building blocks the GPS signal reception, degrading position accuracy even more than normal. Moving out away from the building gets a clear sky view, and that combined with the extended length of the wall can be used to reduce the error of the actual measured item. Draw lines between the extended points, and use them as guides to draw the actual building outline.

Licensing

Creative Commons: Some Rights Reserved
BYSA

This work is licensed under the Creative Commons Attribution-ShareAlike 2.0 License.
Attribution not specified as a parameter! THIS LICENSE ALWAYS REQUIRES ATTRIBUTION! Use {{CC-BY-SA-2.0|Attribution, typically name of author}} See Template:CC-BY-SA-2.0 for full description how this template should be used.
Note, there is {{CC-BY-SA-2.0 OpenStreetMap}} for files based on old OSM map data, before the license change made on 2012-09-12.
There is also {{OSM Carto screenshot||old_license}}
for files based on old OSM map data, before the license change made on 2012-09-12, created using OSM Carto map style.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:05, 6 April 2013Thumbnail for version as of 16:05, 6 April 2013756 × 310 (20 KB)Ve6srv (talk | contribs)A visual depiction of how using a sight line along a building face can help to reduce the position ambiguity of a GPS unit. Standing close to a building blocks the GPS signal reception, degrading position accuracy even more than normal. Moving out away...

The following page uses this file:

Metadata