Argument "Longitude" isn't numeric in subtraction (-) at C:\MyScripts\
+2G3Gdistance.pl line 53, <COMBINED> line 5852 (#1)
Argument "Latitude" isn't numeric in multiplication (*) at C:\MyScript
+s\2G3Gdistance.pl line 80, <COMBINED> line 5852 (#1)

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These are clearly the results of you trying to perform arithmetic on the values obtained from your data file's header row. Don't do that. Only start processing the actual data from row 2 onwards.

Use of uninitialized value $lon2 in subtraction (-) at C:\MyScripts\2G3Gdistance.pl line 53, <COMBINED> line 5852 (#2)

This suggests that you have not parsed the data file correctly because $lon2 remains undefined. I suggest that you print out the values of all the arguments to distance() as soon as you retrieve them in order to determine how the parsing has failed and then correct that. The later errors are likely propagations of this problem.

Do take a look through the Basic debugging checklist if you have not already done so. It will help you clear up such similar problems in future.

In reply to Re^3: Nested foreach loops by hippo
in thread Nested foreach loops by keienn

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