How can I calculate the Peak Ground Acceleration from a Accelerogram?

How can I calculate the Peak Ground Acceleration from a Accelerogram?

[John BG]

what device are you using, an altimeter? or just simulating something?

[Philippe Corner]

The device is an Accelerograph, like a Seismograph but it registers acceleration.

[John BG]

what do you get of your device?

a paper roll with printed graph?

a file with the data?

can you get us a file with the readings? it would be much appreciated.

It hasn't got to be a whole week of recordings, just a fragment if too long so we can start with something other than guessing.

Answer 1

[Nicolás]

rec; %Accelerogram 
PGA = max(abs(rec));

where: "rec" is a vector with the Accelerogram trace

Answer 2

[Cagatay DEMIR]

490dan gelenler, selam