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feat(structuredgrid): add method to to get ij from point(s) in real world coordinates #1205

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feat(structuredgrid): add method to to get ij from point(s) in real world coordinates #1205

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24 changes: 24 additions & 0 deletions flopy/discretization/structuredgrid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -904,6 +904,30 @@ def get_node(self, lrc_list):
v.append(node)
return v

def get_ij(self, x, y):
"""Return the row and column of a point or sequence of points
in real-world coordinates.

Parameters
----------
x : scalar or sequence of x coordinates
y : scalar or sequence of y coordinates

Returns
-------
i : row or sequence of rows (zero-based)
j : column or sequence of columns (zero-based)
"""
if np.isscalar(x):
c = (np.abs(self.xcellcenters[0] - x)).argmin()
r = (np.abs(self.ycellcenters[:, 0] - y)).argmin()
else:
xcp = np.array([self.xcellcenters[0]] * (len(x)))
ycp = np.array([self.ycellcenters[:, 0]] * (len(x)))
c = (np.abs(xcp.transpose() - x)).argmin(axis=0)
r = (np.abs(ycp.transpose() - y)).argmin(axis=0)
return r, c

def plot(self, **kwargs):
"""
Plot the grid lines.
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