Help Documentation: Difference between revisions

Revision as of 20:45, 3 December 2005

Idea is to put documentation on the edit/browse interface here for end users

Getting a track off a handheld GPS unit: Making GPX Tracks and maybe GPS Serial to USB.
Homebrew computer software and hardware for making tracks: Making Tracks with Homebrew-ware

Street names. Enter the full name as it appears on the street name signs. Use mixed case with the first letter of each word capitalised (for example, Church Street, not Church street). Do not abbreviate words. There is currently no table of standard abbrviations (St. could be Street or it could be Saint) and until such time as a standard table has been developed it is better to enter the full name. Also watch out for apostrophes (There is no obvious consistency; the London Underground station Barons Court is adjacent to Earl's Court, one with an apostrophe, one without).
Abbreviations. None at present.

Should dual-carriageways always be drawn as two paths?
How do you draw a roundabout? Four points, eight points?
Intersections and interchanges - how much detail
Accuracy. How do you judge and or indicate the accuracy? How accurate is good enough? Is a rough approximation better than nothing (ie inaccurate roads get refined the way wikipedia articles do).
Is it constructive/helpful to mark a road that you know is roughly in the righ place but dont have any supporting GPS data?
Landmarks, footpaths, etc?
How do you indicate that one road passes over or under another?
If a road is made up of several/many segments, how often should it be labelled with its name? eg M25 - once between each junction? Once on each carriageway (M25 Clockwise, M25 Anti-clockwise)?

Is correct topology more or less important than accurate location?
If a road is a dual carriageway it should be show as two lines
If a road has a small traffic island (eg at the approach to a large roundabout) should this be represented as a triangle or not? How big should it be before it should be drawn?
Should mini-roundabouts (comprising of just white paint on the road) be drawn as a roundabout?
Where a side road connects to a main road should there be a node with three lines connected to it or should the main road be a continuous unbroken line and the side road just ending at but not connected to a node that is part of the main road?
If a road is can be clearly made out from the arial photo, but there are also a few GPS tracks, which should be considered to be the more accurate?
Should roads be drawn based solely on the arial photo if there are no GPS track points?

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 ==Standards and Conventions==
 ===Naming Conventions===
+*Street names. Enter the full name as it appears on the street name signs.  Use mixed case with the first letter of each word capitalised (for example, ''Church Street'', not ''Church street''). Do not abbreviate words.  There is currently no table of standard abbrviations (St. could be Street or it could be Saint) and until such time as a standard table has been developed it is better to enter the full name.  Also watch out for apostrophes (There is no obvious consistency; the London Underground station Barons Court is adjacent to Earl's Court, one with an apostrophe, one without).
-*Street names: Which is preferred? Church Street or Church street or Church st.
-*Abbreviations.  Should there be a standard list of abbreviations? St=Street or Saint?
+*Abbreviations.  None at present.
 ===Drawing Guidelines===
 *Should dual-carriageways always be drawn as two paths?