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Thanks. This is working well, but only if I use awk (and not nawk, which isn't recognized on my system).

What is the logic behind this code ? What if we want to remove only 1 line, or three...

Okay, I have one more problem to solve with Awk (or any other simple method in UNIX) :

I have to remove some lines in the data. The original data have the following shape :



The two first...

Ok, but there's a constraint : Actually, the curves are all loops (same START and END points). I don't want to remove these. I just want to remove the useless doubles, which are always standing...

I just noticed something bad with my data. Some points are doubled for nothing. Here's a list of Long/Lat coordinates (it's just a sample of a huge data file) :


So I now need to remove all the...

OMG !! It worked like a charm !

THANK YOU SO MUCH !!!

Hello guys,

I'm a new member here and I need some help with the Awk application. I'm using it through the Terminal app of OSX (I'm a Mac user).

I have a huge file with a large amount of data...