Hackage :: [Package]

HSlippyMap: OpenStreetMap Slippy Map

This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.

[maintain] [Publish]

Warnings:

[Skip to Readme]

Properties

Versions 0.1.0.0, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.1, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.0, 3.0.1
Change log None available
Dependencies base (>=4.6 && <4.7) [details]
License BSD-3-Clause
Author Jean-Alexandre Peyroux
Maintainer m@j4.pe
Category Development
Home page https://github.com/j4/HSlippyMap
Uploaded by j4pe at 2013-12-24T22:38:56Z

Modules

Downloads

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees

Readme for HSlippyMap-2.1

[back to package description]

Algo

http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Haskell

Exemple

Gist : https://gist.github.com/j4/8117832

import HSlippyMap

main = do                                                                             
  mapM (\(x,y) -> mapM (\y'-> print $ "http://openstreetmap.asi.mi/" ++ show z ++ "/" ++ show x ++ "/" ++ show y' ++ ".png") y) [(x,\
[(minimum [tymin, tymax])..(maximum [tymin,tymax])]) | x <- [(minimum [txmin, txmax])..(maximum [txmin, txmax])]]
  where
      min = tileFromLatLong 49.13 3.05 8
      max = tileFromLatLong 48.57 1.66 8
      txmin = tx min
      txmax = tx max
      tymax = ty min
      tymin = ty max
      z = tz min

̀`

Result :

$ ./hsl | xargs wget -nv -O NULL --output-file osm.asi.log 
$ cat osm.asi.log 
2013-12-24 22:04:46 URL:http://tile.openstreetmap.org/8/129/87.png [37753/37753] -> "NULL" [1]
2013-12-24 22:04:46 URL:http://tile.openstreetmap.org/8/129/88.png [36997/36997] -> "NULL" [1]
2013-12-24 22:04:46 URL:http://tile.openstreetmap.org/8/130/87.png [36749/36749] -> "NULL" [1]
2013-12-24 22:04:47 URL:http://tile.openstreetmap.org/8/130/88.png [35550/35550] -> "NULL" [1]
FINISHED --2013-12-24 22:04:47--
Total wall clock time: 0,7s
Downloaded: 4 files, 144K in 0,4s (364 KB/s)


Other exemple
-------------

```haskell
mapM (\z-> putStrLn $ show $ tileFromLatLong 12.3 3.3 z) [0..18]

http://tile.openstreetmap.org/0/0/0.png
http://tile.openstreetmap.org/1/1/0.png
http://tile.openstreetmap.org/2/2/1.png
http://tile.openstreetmap.org/3/4/2.png
http://tile.openstreetmap.org/4/8/5.png
http://tile.openstreetmap.org/5/16/11.png
http://tile.openstreetmap.org/6/32/22.png
http://tile.openstreetmap.org/7/64/44.png
http://tile.openstreetmap.org/8/129/88.png
http://tile.openstreetmap.org/9/259/176.png
http://tile.openstreetmap.org/10/518/352.png
http://tile.openstreetmap.org/11/1036/704.png
http://tile.openstreetmap.org/12/2073/1409.png
http://tile.openstreetmap.org/13/4147/2819.png
http://tile.openstreetmap.org/14/8295/5639.png
http://tile.openstreetmap.org/15/16590/11278.png
http://tile.openstreetmap.org/16/33181/22557.png
http://tile.openstreetmap.org/17/66362/45115.png
http://tile.openstreetmap.org/18/132725/90230.png

long2tilex lon z = floor((lon + 180.0) / 360.0 * (2.0 ** z))
 
lat2tiley lat z = floor((1.0 - log( tan(lat * pi/180.0) + 1.0 / cos(lat * pi/180.0)) / pi) / 2.0 * (2.0 ** z))
 
tilex2long x z = x / (2.0 ** z) * 360.0 - 180
 
tiley2lat y z = 180.0 / pi * atan(0.5 * (exp(n) - exp(-n)))
        where
                n = pi - 2.0 * pi * y / (2.0 ** z)
 
-- Exemple
main = do
        --print $ long2tilex 2.2712 17
        --print $ lat2tiley 48.8152 17
        --print $ tilex2long 66362 17
        --print $ tiley2lat 45115 17
        putStrLn "gps: (lat=48.8152,long=2.2712)"
        putStrLn $ "http://tile.openstreetmap.org/17/" ++ show x ++ "/" ++ show y ++ ".png"
        where
                z = 17
                x = long2tilex 2.2712 z
                y = lat2tiley 48.8152 z