high pass filter in golang question

[boksili]

HI.
I am new in golang.

I want open file and do HPF and save the file after HPF.

the file format is
1 28.00000
2 29.00000
3 28.00000
4 30.00000
5 28.00000
.....
.....

it has two column
(time well_height)

the sample rate is 0.0166Hz (60 seconds interval well height recording)
It has very very long term noise more than 200 sec
So I want to High pass filter with cutoff frequency 0.005 Hz

I looked over your golang code very carefully with 1 week
but Still I failed with your code.

Is there any sample form with open file and do HPF and save to file with HPF results ?

please help me. I am graduate course student.

Thanks for all.

TaeRhee