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I'm still rather new to Perl, and have been learning it as a requirement for maintaining a program at work. The program is used to load physical survey information (x,y,z coordinates) for seismic lines, allowing the option to write to a file afterwards. Each survey file (SEG-P1 format, for those who might know what this is) may contain data for multiple seismic lines.

My current plan is to store (x,y,z) information in a hash of hashes, and I'm curious if anyone has a better idea for storing these data.

The data model and implementation as I see it look something like this:

Line --+ | +-- Station | | | +---- Easting (x) | +---- Northing (y) | +---- Elevation (z) | +-- Length | +-- Group (Stn) Interval %Coord = ( $Line_1 => { stn_1 => coord_1, stn_2 => coord_2, stn_3 => coord_3, ... ... ... stn_n => coord_n, }, $Line_2 => { stn_1 => coord_1, stn_2 => coord_2, stn_3 => coord_3, ... ... ... stn_n => coord_n, }, # And so-on to $Line_n );
From what I understand, the coordinates would then be accessed as (for example)

Does this look like a reasonable model/implementation?

Is there an easier, more efficient way to do this?

I got the idea for the hash of hashes by googling Perl Data Structures, and found the data structures cookbook by Tom Christiansen, which discusses just these topics.

In reply to Data Structures by YYCseismic

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