Resolution issue

[mta102]

xmin, xmax, ymin, ymax = 0, 0.00002, 0, 0.00002
x0, y0, x1, y1 = 0.00005, 0.00005, 0, 1

#define any n-sided polygon
p = np.array([[xmin, ymin],
[xmax, ymin],
[xmax, ymax],
[xmin, ymax],
[xmin, ymin]])

#define some coords
coords = np.array([[x0, y0],
[x1, y1]])

#get boolean mask for points if in or on polygon perimeter
isin, ison = inpoly2(coords, p)
isin.sum()

[krober10nd]

Sorry what's the issue exactly?

Have you read the docstring?

   STAT, BNDS = INPOLY2(..., FTOL) also returns an N-by-1
    boolean array BNDS, with BNDS[II] = TRUE if VERT[II, :]
    lies "on" a boundary segment, where FTOL is a floating-
    point tolerance for boundary comparisons. By default,
    FTOL ~ EPS ^ 0.85.

[dengwirda]

Closing --- not clear there's an issue, though note that the polygon is defined with duplicate nodes.