fix: rounding error (resolve #13)

muety · May 2, 2024 · 58bf13a · 58bf13a
1 parent 8222ca5
commit 58bf13a
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Showing 5 changed files with 7 additions and 6 deletions.
diff --git a/README.md b/README.md
@@ -36,8 +36,8 @@ Pip installation is only tested for Linux and Mac, yet. If you encounter problem
 
 ### From archive
 ```bash
-$ wget https://github.com/muety/pyquadkey2/releases/download/0.3.0/pyquadkey2-0.3.0.tar.gz
-$ pip install pyquadkey2-0.3.0.tar.gz
+$ wget https://github.com/muety/pyquadkey2/releases/download/0.3.1/pyquadkey2-0.3.1.tar.gz
+$ pip install pyquadkey2-0.3.1.tar.gz
 ```
 
 ### From source

diff --git a/docs/installation.md b/docs/installation.md
@@ -12,8 +12,8 @@ Pip installation is only tested for Linux and Mac, yet. If you encounter problem
 
 ### From archive
 ```bash
-$ wget https://github.com/muety/pyquadkey2/releases/download/0.3.0/pyquadkey2-0.3.0.tar.gz
-$ pip install pyquadkey2-0.3.0.tar.gz
+$ wget https://github.com/muety/pyquadkey2/releases/download/0.3.1/pyquadkey2-0.3.1.tar.gz
+$ pip install pyquadkey2-0.3.1.tar.gz
 ```
 
 ### From source

diff --git a/setup.py b/setup.py
@@ -14,7 +14,7 @@
 
 setup(
     name='pyquadkey2',
-    version='0.3.0',
+    version='0.3.1',
     description='Python implementation of geographical tiling using QuadKeys as proposed by Microsoft',
     long_description=long_description,
     long_description_content_type='text/markdown',

diff --git a/src/pyquadkey2/quadkey/tilesystem/tilesystem.pyx b/src/pyquadkey2/quadkey/tilesystem/tilesystem.pyx
@@ -60,7 +60,7 @@ cpdef (double, double) pixel_to_geo((double, double) pixel, const long level):
     y = 0.5 - (clip(pixel_y, (0, ms - 1)) / ms)
     lat = 90 - 360 * math.atan(math.exp(-y * 2 * math.pi)) / math.pi
     lon = 360 * x
-    return math.round(lat * 1e12) / 1e12, math.round(lon * 1e12) / 1e12
+    return int(lat * 1e12) / 1e12, int(lon * 1e12) / 1e12
 
 cpdef (long, long) pixel_to_tile(const (long, long) pixel):
     return pixel[0] // 256, pixel[1] // 256

diff --git a/tests/test_quadkey.py b/tests/test_quadkey.py
@@ -26,6 +26,7 @@ def testInitInvalidKey(self):
 
     def testFromGeo(self):
         self.assertEqual('1202032333311320', quadkey.from_geo((49.014205, 8.420025), 16).key)
+        self.assertEqual('311213', quadkey.from_geo((-27.052395, 152.97702), 6).key)  # https://github.com/muety/pyquadkey2/issues/13
 
     def testFromGeoInvalidLevel(self):
         with self.assertRaises(AssertionError):