Scan

Scanning allows inspecting large surveys without loading everything in memory.

import pysegy as seg

# scan all matching files in the repository data directory
data_dir = "../data"
scan = seg.segy_scan(data_dir, "overthrust_2D_shot_*.segy")

print(len(scan.shots))  # number of shot records
print(scan.counts[0])   # traces in the first shot

The pysegy.segy_scan function summarises multiple files and returns a pysegy.SegyScan that can lazily read data for each shot.