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Error: Y coordinate is not numeric

Solution or Workaround

Summary

ATLASARC returns this message:

Y coordinate is not numeric at line 3 Column 25.
Boundary (feature) name is "feature name" at line 1

0 polygon(s) processed.

The file also contains:
0 line(s)
0 point(s)
0 circle(s)

Cause

Most likely the ATLAS file is not in the correct format.

Solution

The format for an ATLAS file is as follows:

"feature name",-2 <-- The -2 indicates the number of x,y pairs to follow.
x1,y1
x2,y2
"feature name",-3
x1,y1
x2,y2
x3,y3

The feature name and the number of points must appear together on the same line, and the x,y coordinate pairs must be on separate lines.