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equinor / segyio

Fast Python library for SEGY files.
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iline xline offset samples #540

Closed SherloK1898989 closed 1 year ago

SherloK1898989 commented 1 year ago

HI , can you please give me a little answer about this parameters what the iline ,xline,offset, samples

for to make it more convenient for you , answer with an example , if I have 5 stations , each of which has recorded a date in an array with a length of 2000 , how to write iline ,xline,offset, samples

thank you in advance for the answer I really appreciate it

ErlendHaa commented 1 year ago

These are all common terms in seismic. They refer to different directions/dimensions in the seismic volume.

https://glossary.slb.com/en/terms/i/in-line https://glossary.slb.com/en/terms/c/crossline

SherloK1898989 commented 1 year ago

what about spec.samples and traces ?

пн, 24 окт. 2022 г. в 16:30, Erlend Hårstad @.***>:

These are all common terms in seismic. They refer to different directions in the seismic volume.

https://glossary.slb.com/en/terms/i/in-line https://glossary.slb.com/en/terms/c/crossline

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ErlendHaa commented 1 year ago

A sample is a single data point, i.e. a scalar value. A trace is collection of samples at some inline/crossline/offset intersection. The distance between samples are either measured in depth (m/feet/ect..) or time (ms). The slb glossary have entries for these terms

If you are new to seismic/SEGY I suggest that you read up a bit on common terminology and on the SEGY format, as this library and it's documentation assumes that the user is familiar with seismic and SEGY :)