Reading and Writing Data to and from Tapes

Reading tapes is more of an art than a science. This is true in general, and is especially true for SU. The variability of hardware formats, as well as the variability of data format types, makes the creation of a ``general tape reading utility'' a challenging, if not impossible, proposition.

The following programs are useful for the specialized data input and output tasks related to geophysical applications, as well as to the internal SU data format

• BHEDTOPAR - convert a Binary tape HEaDer file to PAR file format
• DT1TOSU - Convert ground-penetrating radar data in the Sensors & Software X.dt1 GPR format to SU format
• SEGDREAD - read an SEG-D tape
• SEGYCLEAN - zero out unassigned portion of header
• SEGYREAD - read an SEG-Y tape
• SEGYHDRS - make SEG-Y ascii and binary headers for segywrite
• SEGYWRITE - write an SEG-Y tape
• SETBHED - SET the fields in a SEGY Binary tape HEaDer file
• SUADDHEAD - put headers on bare traces and set the tracl and ns fields
• SUSTRIP - remove the SEGY headers from the traces
• SUPASTE - paste existing SEGY headers on existing data

The following programs are useful for general data input, output, and data type conversion, which may also find use in tape reading,

• A2B - convert ascii floats to binary
• B2A - convert binary floats to ascii
• FTNSTRIP - convert Fortran floats to C-style floats
• H2B - convert 8 bit hexidecimal floats to binary
• RECAST - RECAST data type (convert from one data type to another)
• TRANSP - TRANSPose an n1 by n2 element matrix