NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum

Hi there are times when I would like to be able to select a length of a bendy way and apply a bezier function to smooth and then allow me to make further adjustments as necessary. Currently I add extra points drag around until satisfied. Creeks are a prime target that I can see in my area. Is this available in any of the editors for me to try. I am using JOSM and it seems not to have this feature or a plugin. I guess drawbacks may be that such functions would tend to add far more nodes that necessary and some may find it difficult to resist 'prettying' up their map and losing authenticity. I should add that I am not that familiar with doing this practically with mapping, so feel free to express contrary views to such a feature.


edit: just found further info bezier curves osm

asked 04 Oct '13, 14:57

nevw's gravatar image

nevw
9.8k2690178
accept rate: 9%

edited 04 Oct '13, 15:17


The utilsplugin2 JOSM plugin has a "circle arc" feature in the "More Tools" menu. See this page on the JOSM wiki for how to use it:

http://josm.openstreetmap.de/wiki/Help/Action/CreateCircleArc

Also, do you know about the "w" mode in JOSM? I don't see it actually mentioned in the menus anywhere... It lets you select a way and then either move existing nodes, create new nodes (by holding CTRL) or delete nodes (by holding ALT) just by clicking.

permanent link

answered 07 Oct '13, 01:05

ToeBee's gravatar image

ToeBee
976920
accept rate: 27%

Just add enough points so that the way follows the shape of the feature, and don't worry too much about making it smooth. Renderers can smooth out the curves later. For example, have a look at:

There's always plenty more things to map rather than spending excessive time on one particular feature! My rule of thumb is that if there's enough nodes that the edges stay within the width of the road on background imagery, that's enough. Alternatively, if the displacement of the midpoint of each pair of nodes from the real feature is less than 2 metres, that's enough too. Beyond that is usually just adding nodes without adding any real information.

permanent link

answered 04 Oct '13, 16:29

Andy%20Allan's gravatar image

Andy Allan
12.5k23128153
accept rate: 28%

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×10
×2
×1

question asked: 04 Oct '13, 14:57

question was seen: 5,616 times

last updated: 07 Oct '13, 01:05

NOTICE: help.openstreetmap.org is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum