[BUGFIX] Wind directions steps check (#1165)

* Write test

* Switch to allclose

Author: misi9170

floris/utilities.py

@@ -127,7 +127,7 @@ def check_and_identify_step_size(wind_directions):
             raise ValueError("wind_directions must be evenly spaced")
 
     else:
-        if np.all(steps == steps[0]):
+        if np.allclose(steps, steps[0]):
             return steps[0]
 
         # If all but one of the steps are the same

tests/wind_data_integration_test.py

@@ -114,6 +114,21 @@ def test_wind_rose_init():
     with pytest.raises(ValueError):
         WindRose(wind_directions, wind_speeds, 0.06, np.ones((3, 3)))
 
+    # Test that instantiating with non-integer wind directions and wind speeds works
+    wind_directions = np.array([270.0, 280.0, 290.0])
+    wind_speeds = np.array([6.0, 7.0])
+    _ = WindRose(wind_directions, wind_speeds, ti_table=0.06)
+
+    wind_directions = np.array([270.5, 280.5, 290.5])
+    wind_speeds = np.array([6.5, 7.5])
+    _ = WindRose(wind_directions, wind_speeds, ti_table=0.06)
+
+    # Test that instantiating with non-integer steps works
+    _ = WindRose(
+        wind_directions=np.linspace(0.0, 360.0, 100, endpoint=False),
+        wind_speeds=np.array([5.0]),
+        ti_table=0.06,
+    )
 
 def test_wind_rose_grid():
     wind_directions = np.array([270, 280, 290])
@@ -799,6 +814,16 @@ def test_wind_ti_rose_init():
     with pytest.raises(ValueError):
         WindTIRose(wind_directions, wind_speeds, turbulence_intensities, np.ones((3, 3, 3)))
 
+    # Test that instantiating with non-integer wind directions and wind speeds works
+    _ = WindTIRose(wind_directions+0.5, wind_speeds+0.2, turbulence_intensities)
+
+    # Test that instantiating with non-integer steps works
+    _ = WindTIRose(
+        wind_directions=np.linspace(0.0, 360.0, 100, endpoint=False),
+        wind_speeds=np.array([5.0]),
+        turbulence_intensities=turbulence_intensities,
+    )
+
 
 def test_wind_ti_rose_grid():
     wind_directions = np.array([270, 280, 290, 300])