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♻️ Rename pad to shift #952

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Sep 5, 2024
Merged

♻️ Rename pad to shift #952

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16 changes: 8 additions & 8 deletions src/pyiem/grid/util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,26 +3,26 @@
import numpy as np


def grid_smear(grid: np.ndarray, pad: int = 4) -> np.ndarray:
def grid_smear(grid: np.ndarray, shift: int = 4) -> np.ndarray:
"""Smear data around to fill in masked values (likely near coastlines).

Args:
grid: 2D numpy array
pad: number of pixels to smear the data around by in each direction
shift: number of pixels to smear the data around by in each direction

Returns:
2D numpy array with smeared data
"""
# Pad grid
padded = np.ma.masked_all(
(grid.shape[0] + pad * 2, grid.shape[1] + pad * 2)
(grid.shape[0] + shift * 2, grid.shape[1] + shift * 2)
)
# set values from inbound grid
padded[pad:-pad, pad:-pad] = grid
padded[shift:-shift, shift:-shift] = grid

# shift the grid by 4 pixels in each direction to fill in the padded region
for xorigin in [0, pad * 2]:
for yorigin in [0, pad * 2]:
# shift the grid by shift pixels in each direction to fill in the padded
for xorigin in [0, shift * 2]:
for yorigin in [0, shift * 2]:
xslice = slice(xorigin, xorigin + grid.shape[0])
yslice = slice(yorigin, yorigin + grid.shape[1])
padded[xslice, yslice] = np.ma.where(
Expand All @@ -31,4 +31,4 @@ def grid_smear(grid: np.ndarray, pad: int = 4) -> np.ndarray:
padded[xslice, yslice],
)

return padded[pad:-pad, pad:-pad]
return padded[shift:-shift, shift:-shift]
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