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150 lines
5.0 KiB
Python
150 lines
5.0 KiB
Python
import logging
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import sys
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import numpy as np
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import pytest
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import rasterio
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logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)
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@pytest.fixture(scope='session')
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def rgb_array(path_rgb_byte_tif):
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with rasterio.open(path_rgb_byte_tif) as src:
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return src.read()
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@pytest.fixture(scope='function')
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def rgb_byte_tif_reader(path_rgb_byte_tif):
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return rasterio.open(path_rgb_byte_tif)
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def test_read_boundless_false(rgb_byte_tif_reader, rgb_array):
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"""Reading natural window with boundless=False works"""
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with rgb_byte_tif_reader as src:
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data = src.read(boundless=False)
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assert data.shape == rgb_array.shape
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assert data.sum() == rgb_array.sum()
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def test_read_boundless_natural_extent(rgb_byte_tif_reader, rgb_array):
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"""Reading natural window with boundless=True works"""
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with rgb_byte_tif_reader as src:
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data = src.read(boundless=True)
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assert data.shape == rgb_array.shape
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assert data.sum() == rgb_array.sum()
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def test_read_boundless_beyond(rgb_byte_tif_reader):
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"""Reading entirely outside the dataset returns no data"""
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with rgb_byte_tif_reader as src:
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data = src.read(window=((-200, -100), (-200, -100)), boundless=True)
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assert data.shape == (3, 100, 100)
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assert not data.any()
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assert (data == 0).all()
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def test_read_boundless_beyond_fill_value(rgb_byte_tif_reader):
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"""Reading entirely outside the dataset returns the fill value"""
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with rgb_byte_tif_reader as src:
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data = src.read(window=((-200, -100), (-200, -100)), boundless=True,
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fill_value=1)
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assert data.shape == (3, 100, 100)
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assert (data == 1).all()
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def test_read_boundless_beyond2(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read(window=((1000, 1100), (1000, 1100)), boundless=True)
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assert data.shape == (3, 100, 100)
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assert not data.any()
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def test_read_boundless_overlap(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read(window=((-200, 200), (-200, 200)), boundless=True)
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assert data.shape == (3, 400, 400)
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assert data.any()
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assert data[0,399,399] == 13
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def test_read_boundless_resample(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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out = np.zeros((3, 800, 800), dtype=np.uint8)
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data = src.read(
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out=out,
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window=((-200, 200), (-200, 200)),
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masked=True,
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boundless=True)
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assert data.shape == (3, 800, 800)
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assert data.any()
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assert data[0,798,798] == 13
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def test_read_boundless_masked_no_overlap(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read(
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window=((-200, -100), (-200, -100)), boundless=True, masked=True)
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assert data.shape == (3, 100, 100)
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assert data.mask.all()
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def test_read_boundless_masked_overlap(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read(
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window=((-200, 200), (-200, 200)), boundless=True, masked=True)
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assert data.shape == (3, 400, 400)
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assert data.mask.any()
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assert not data.mask.all()
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assert data.mask[0,399,399] == False
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assert data.mask[0,0,0] == True
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def test_read_boundless_zero_stop(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read(
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window=((-200, 0), (-200, 0)), boundless=True, masked=True)
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assert data.shape == (3, 200, 200)
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assert data.mask.all()
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def test_read_boundless_masks_zero_stop(rgb_byte_tif_reader):
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with rgb_byte_tif_reader as src:
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data = src.read_masks(window=((-200, 0), (-200, 0)), boundless=True)
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assert data.shape == (3, 200, 200)
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assert data.min() == data.max() == src.nodata
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def test_read_boundless_noshift():
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with rasterio.open('tests/data/rgb4.tif') as src:
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# the read offsets should be determined by start col/row alone
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# when col stop exceeds image width
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c1 = src.read(boundless=True,
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window=((100, 101), (-1, src.shape[1])))[0, 0, 0:9]
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c2 = src.read(boundless=True,
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window=((100, 101), (-1, src.shape[1] + 1)))[0, 0, 0:9]
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assert np.array_equal(c1, c2)
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# when row stop exceeds image height
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r1 = src.read(boundless=True,
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window=((-1, src.shape[0]), (100, 101)))[0, 0, 0:9]
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r2 = src.read(boundless=True,
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window=((-1, src.shape[0] + 1), (100, 101)))[0, 0, 0:9]
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assert np.array_equal(r1, r2)
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def test_np_warning(recwarn, rgb_byte_tif_reader):
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"""Ensure no deprecation warnings
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On np 1.11 and previous versions of rasterio you might see:
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VisibleDeprecationWarning: using a non-integer number
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instead of an integer will result in an error in the future
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"""
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import warnings
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warnings.simplefilter('always')
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with rgb_byte_tif_reader as src:
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window = ((-10, 100), (-10, 100))
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src.read(1, window=window, boundless=True)
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assert len(recwarn) == 0
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