コード例 #1
0
ファイル: uniontiles.py プロジェクト: mapbox/supermercado
def union(inputtiles, parsenames):

    tiles = sutils.tile_parser(inputtiles, parsenames)

    xmin, xmax, ymin, ymax = sutils.get_range(tiles)

    zoom = sutils.get_zoom(tiles)

    # make an array of shape (xrange + 3, yrange + 3)
    burn = sutils.burnXYZs(tiles, xmin, xmax, ymin, ymax, 0)

    nw = mercantile.xy(*mercantile.ul(xmin, ymin, zoom))

    se = mercantile.xy(*mercantile.ul(xmax + 1, ymax + 1, zoom))

    aff = Affine(((se[0] - nw[0]) / float(xmax - xmin + 1)), 0.0, nw[0],
        0.0, -((nw[1] - se[1]) / float(ymax - ymin + 1)), nw[1])

    unprojecter = sutils.Unprojecter()

    unionedTiles = [
        {
            'geometry': unprojecter.unproject(feature),
            'properties': {},
            'type': 'Feature'
        } for feature, shapes in features.shapes(np.asarray(np.flipud(np.rot90(burn)).astype(np.uint8), order='C'), transform=aff) if shapes == 1
    ]

    return unionedTiles
コード例 #2
0
ファイル: edge_finder.py プロジェクト: mapbox/supermercado
def findedges(inputtiles, parsenames):


    tiles = sutils.tile_parser(inputtiles, parsenames)

    xmin, xmax, ymin, ymax = sutils.get_range(tiles)

    zoom = sutils.get_zoom(tiles)
    # zoom = inputtiles[0, -1]

    # make an array of shape (xrange + 3, yrange + 3)
    burn = sutils.burnXYZs(tiles, xmin, xmax, ymin, ymax)

    # Create the indixes for rolling
    idxs = sutils.get_idx()

    # Using the indices to roll + stack the array, find the minimum along the rolled / stacked axis
    xys_edge = (np.min(np.dstack((
        np.roll(np.roll(burn, i[0], 0), i[1], 1) for i in idxs
        )), axis=2) - burn)

    # Set missed non-tiles to False
    xys_edge[burn == False] = False

    # Recreate the tile xyzs, and add the min vals
    xys_edge = np.dstack(np.where(xys_edge))[0]
    xys_edge[:, 0] += xmin - 1
    xys_edge[:, 1] += ymin - 1

    # Return the edge array

    return np.append(xys_edge, np.zeros((xys_edge.shape[0], 1), dtype=np.uint8) + zoom, axis=1)
コード例 #3
0
def findedges(inputtiles, parsenames):

    tiles = sutils.tile_parser(inputtiles, parsenames)

    xmin, xmax, ymin, ymax = sutils.get_range(tiles)

    zoom = sutils.get_zoom(tiles)
    # zoom = inputtiles[0, -1]

    # make an array of shape (xrange + 3, yrange + 3)
    burn = sutils.burnXYZs(tiles, xmin, xmax, ymin, ymax)

    # Create the indixes for rolling
    idxs = sutils.get_idx()

    # Using the indices to roll + stack the array, find the minimum along the rolled / stacked axis
    xys_edge = (np.min(np.dstack(
        (np.roll(np.roll(burn, i[0], 0), i[1], 1) for i in idxs)),
                       axis=2) - burn)

    # Set missed non-tiles to False
    xys_edge[burn == False] = False

    # Recreate the tile xyzs, and add the min vals
    xys_edge = np.dstack(np.where(xys_edge))[0]
    xys_edge[:, 0] += xmin - 1
    xys_edge[:, 1] += ymin - 1

    # Return the edge array

    return np.append(xys_edge,
                     np.zeros((xys_edge.shape[0], 1), dtype=np.uint8) + zoom,
                     axis=1)
コード例 #4
0
def union(inputtiles, parsenames):

    tiles = sutils.tile_parser(inputtiles, parsenames)

    xmin, xmax, ymin, ymax = sutils.get_range(tiles)

    zoom = sutils.get_zoom(tiles)

    # make an array of shape (xrange + 3, yrange + 3)
    burn = sutils.burnXYZs(tiles, xmin, xmax, ymin, ymax, 0)

    nw = mercantile.xy(*mercantile.ul(xmin, ymin, zoom))

    se = mercantile.xy(*mercantile.ul(xmax + 1, ymax + 1, zoom))

    aff = Affine(
        ((se[0] - nw[0]) / float(xmax - xmin + 1)),
        0.0,
        nw[0],
        0.0,
        -((nw[1] - se[1]) / float(ymax - ymin + 1)),
        nw[1],
    )

    unprojecter = sutils.Unprojecter()

    unionedTiles = [
        {
            "geometry": unprojecter.unproject(feature),
            "properties": {},
            "type": "Feature",
        }
        for feature, shapes in features.shapes(
            np.asarray(np.flipud(np.rot90(burn)).astype(np.uint8), order="C"),
            transform=aff,
        )
        if shapes == 1
    ]

    return unionedTiles