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add custom exception type

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This commit is contained in:
Jan Petykiewicz 2024-07-29 00:42:31 -07:00
parent 9749cecef8
commit 1799faeddd
1 changed files with 9 additions and 4 deletions
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13
float_raster/float_raster.py
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@ -4,6 +4,11 @@ from numpy import logical_and, diff, floor, ceil, ones, zeros, hstack, full_like
from scipy import sparse
class FloatRasterError(Exception):
""" Custom exception for float_raster """
pass
def raster(
vertices: ArrayLike,
grid_x: ArrayLike,
@ -58,7 +63,7 @@ def find_intersections(
Find intersections between a polygon and grid lines
"""
if vertices.shape[0] != 2:
raise Exception('vertices must be 2xN')
raise FloatRasterError('vertices must be 2xN')
min_bounds = floor(vertices.min(axis=1))
max_bounds = ceil(vertices.max(axis=1))
@ -136,9 +141,9 @@ def create_vertices(
Create additional vertices where a polygon crosses gridlines
"""
if vertices.shape[0] != 2:
raise Exception('vertices must be 2xN')
raise FloatRasterError('vertices must be 2xN')
if grid_x.size < 1 or grid_y.size < 1:
raise Exception('Grid must contain at least one line in each direction?')
raise FloatRasterError('Grid must contain at least one line in each direction?')
num_poly_vertices = vertices.shape[1]
@ -235,7 +240,7 @@ def get_raster_parts(
grid_y = numpy.array(grid_y)
if grid_x.size < 2 or grid_y.size < 2:
raise Exception('Grid must contain at least one full pixel')
raise FloatRasterError('Grid must contain at least one full pixel')
num_xy_px = numpy.array([grid_x.size, grid_y.size]) - 1