Thanks for the reply.

I have made the recommended changes to &conflict_check and the innermost foreach but the behaviour is the same. The best way I could describe it is that it is treating the next as a last.

I always use use strict and warnings - it actually makes it easier because the errors are more helpful for fixing things before they have a confusing knock-on effect for other lines.

All of the lines I have included are wrapped by PerlMonks - it's much clearer without this. There are several logs in the script, they are part of an equation a couple of thousand lines long with 185 variables. I know this code works because they are working fine as part of a manual process where frequency, antenna length and channel width are selected by the user. The only part that doesn't work properly is this while/foreach nested loop which doesn't cycle through antenna lengths as expected.

I have included below all lines that I could find with log (in no particular order) and the log subroutine. All of the log lines are either part of &calculate_rsl;, &calculate_oav_h or &calculate_oav_v; - all of which shouldn't be reached if certain antenna lengths match incompatible frequencies as defined in &conflict_check;. 

$FREE_SPACE_PATH_LOSS = 92.45+20*log10($PATH_LENGTH)+20*log10($FREQUEN
+CY);

$OUTAGE_FACTOR_H = 0.139735174-0.172*log10($FADE_MARGIN/$PATH_ATTENUAT
+ION_H);

$GEOCLIMATIC_CONVERSION_FACTOR = (10.3-5*log10(1-abs(cos($LATITUDE))**
+0.7)-2.8*log10($PATH_LENGTH)+1.8*log10(abs($INCLINATION)));

$OUTAGE_FACTOR_V = 0.139735174-0.172*log10($FADE_MARGIN/$PATH_ATTENUAT
+ION_V);

sub log10 {
  my $n = shift;
  return log($n)/log(10);
}

[download]

Thanks for any additional help that anybody can offer :-)

Kind regards,

Ben

In reply to Re^2: Nested While Loops, foreach and next by Chipwiz_Ben
in thread Nested While Loops, foreach and next by Chipwiz_Ben

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