OpenStreetMap

SamatJain's Diary Comments

Diary Comments added by SamatJain

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Yay for compatibility

Adobe has discontinued Flash for Linux (unless you get it through Chrome, anyway), so don’t expect that to last.

Green River, Wyoming, USA

Fantastic work—looks gorgeous!

More Conwy Valley Updates

You should link to the area you've edited, so people can view your work.

I don't normally do this

@Johnsmith: According to Jaitapur Nuclear Power Project [Wikipedia], this particular nuclear power plant is more of the same: a uranium-plutonium fuel cycle.

I don't normally do this

Technical issues of nuclear power aside — western corporations (e.g. HSBC) financing nuclear power plants? Really? Private financing has been dead in the nuclear industry since the '80s.

They'd never do this in their home countries, and I only imagine they're doing it in India because the Indian government is letting its people take all the risk (news at 11: the Indian government is rampant with corruption!).

Also, sorry — this is completely off-topic for OSM!

Spain shapefile data

What's the license?

My OSM article printed in local newsletter

What would you have done differently?

OSM gets some new competition: Google Map Maker

> A shortcoming you've missed is the inability to reuse data created with Map Maker; when
> contributing to Map Maker you're giving your time to Google and only them.

That's a tad misleading.

You created your content — of course you own it! You're not giving it to "only" them; there is nothing stopping you from entering data into both Google Maps and OpenStreetMap.

The difference between Google and OpenStreetMap (even with the more powers awarded the OSMF via the new contributors' terms): Google has strict rules and limitations on how you can use their data, and data contributed by others. OpenStreetMap does not — the sky is the limit!

> Though these are a few shortcomings of OSM, I think that if the OSM developers just put a
> little time and effort into fixing these things, we would have a darn good map. I might write
> up something in my wiki with suggestions for improving OSM.

Ideas are cheap. This project needs (as much as any other project) more people doing things… pick one of your ideas and make it happen!

Potlatch 2 tutorial video: part 1 (rough cut)

Agreed on the audio—it's a tad difficult to hear.

Also, while it doesn't make sense because Potlatch requires Flash, please remember to post an Open Video version (Ogg Theora or WebM) for those of us who rather avoid it.

OSM Editing Accuracy

Are you using Potlatch 2 with Bing's imagery? It's misaligned at low zooms.

Otherwise, if you're editing in the USA, most roads are part of the TIGER data import. Some of the data in certain areas is very, very off, and needs to be aligned/corrected.

Roads and their misalignment

There's evidence that Bing's imagery is off [my blog], at least at some zooms. As others have said, double-check with another resource (GPS tracks, Yahoo imagery, etc).

how to map usage of university buildings

@compdude: But, a forest on university land *is* managed—by the university.

how to map usage of university buildings

> building=yes
>operator=Departement Wiskunde
> operator:en=Department of Mathematics

I feel this is misleading… in universities in the USA, at least, the "operator" of the building is the university, and the department just a tenant.

I like the proposal in the first comment, using addr:housename.

Mount Fuji

Fantastic! Looking forward to seeing Mt. Fuji mapped.

OpenStreetMap "Geolocate me" user script

Andy: Thanks, I'll look into it! I wanted to start off with a user script to nail down browser compatibility (the first version of my code only worked with Firefox).

NAIP photos

You can actually download almost all the imagery at the USDA geospatial gateway:

http://datagateway.nrcs.usda.gov/

I've downloaded a bit, converted the proprietary MrSID files to GeoTIFFs, and then the GeoTIFF into a Google/TMS-style file structure that can be used by Potlatch, Merkaartor, etc. I'm working on a tutorial…

SRTM and NED elevation data

What does NED9 look with a different type of shading, perhaps hypsometric tinting? http://en.wikipedia.org/wiki/Hypsometric_tints

AFAIK this is what Google uses for their terrain maps, which also seem high resolution and look quite good.

Went for a hike today and added some trails

Just to check, you're getting information about access restrictions from signs or brochures, right?

I'd tag any positive restriction you're certain about (i.e. what you mentioned: foot=yes, ski=yes, etc).

For negative restrictions (because it's so open-ended), I'd tag whatever the signs say it not allowed. Trails in my area, for example, disallow OHV and offroading (off-highway vehicles), and some disallow horses.

Went for a hike today and added some trails

It'd be useful to add restrictions. If the paths are hiking only (or, only an insane person would attempt to ride a bike there), add foot=yes. If you think bikes and horses may be allowed, add foot=designated (if you have detailed information on whether hikers and bikers are allowed, but not horses, check the wiki for the more precise restrictions you can add).

Belarus forested

Hrm, what exactly is tWMS and how does this work with Yahoo? Does it let you cache Yahoo tiles locally?