Making things the right size

Posted by isleño on 6 April 2014 in English (English)

This is what I do:

The left-hand window is my JOSM editor. The right-hand window is a similar area in the real world (viewed in OSM) and I'm making sure that both are at a similar zoom level.

In this case I'm creating FunLand Khaiwoon, using Hong Kong Disneyland as a model. By "model" I mean I'm trying to make sure that the buildings are roughly the same size, the parking lot is roughly the same size, the little car race track is roughly the same size, the theme park as a whole is roughly the same size, etc.

This seems to work pretty well for me. I've used the same technique for airports, seaports, industrial areas, etc.

Anyone have other tips and tricks they'd care to share?


EDIT: There is now a tool that does this much more easily —OGF scale helper!

Comment from admin on 7 April 2014 at 20:34

In Maperitive you can display OSM maps with an exactly defined scale by applying the zoom-max-scale command.

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Comment from isleño on 8 April 2014 at 21:14

Thanks, that is a cool program!

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Comment from LivingWithDragons on 21 April 2014 at 19:37

The multiple windows is a simple & handy tip.

I was unsure about building sizes so (using JOSM) I went to existing towns in OGF and selected the building way then copied it(Cntrl+C), I go back to one of my towns and paste(Ctrl+V) it. A copy of the building will be placed where my cursor was and maintain the same scale regardless of zoom level.

The buildings I copy tend to be in towns I have built a ferry route to. It forms some kind of fiction that the building may have been inspired by trips abroad or built by foreigners.

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Comment from isleño on 23 April 2014 at 23:20

Copy and paste from other cities... nice idea. Never thought of doing that.

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Comment from histor on 27 April 2014 at 23:00

(at) LivingWithDragons I hope, you were not in my old OGF-cities and had copied my churches. They were all too big at my first drawings. ;-) More then 100 m is unusual.

I often have a look in normally town-maps. So you have a feeling for the measures.

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Comment from wangi on 25 July 2014 at 14:33

There's a big thing to be aware of if you're doing the JOSM cut'n'paste to compare sizes... When you move an item in JOSM it (sort of) preserves the relative coordinates (degrees measurements), not the projected size (meters etc).

So you copy a 100*100m building from 60N to 24S it ends up 183x183m...

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