ValueError: trace too short

[SherloK1898989]

[ErlendHaa]

Hi

From the error message I see that segyio expects each trace is 200 bytes long. I'm guessing that you are using 4 byte floats, meaning the you've set spec.samples=50 somewhere (50 x 4 = 200)? So when assigning a whole trace, like you do on line 103, you need to assign 50 floats, not a single value like it seams like you are doing?

Some friendly reminders about posting issues. It's very helpful for whomever is helping you if you provide 1) a description of the problem 2) a description about what you expected to happen 3) a minimal reproducible example illustrating you problem. It's also better to post code and tracebacks as text, as we can then copy and modify your example without having to re-type everything :)

[SherloK1898989]

I am trying to record data from 3 stations , each station has 4000 data on 1 channel .and I get such an error, indicating that the block should go through a cycle of length spec.samples did not help this my fragment code :

spec.sorting = 2 spec.format = 1 spec.samples = range(int(4000)) spec.ilines = range(3) spec.xlines = range(1, 3) with segyio.create(filename, spec) as f: for _i in range(3): dat = np.array(ark[_i]) data = np.require(dat, dtype=np.single) real_t = np.array(real_time[_i]) trace = Trace(data=data) trace.stats.delta = 0.00001 trace.stats.starttime = (real_time[_i]) arrtrace.append(trace) tr = 0 for il in spec.ilines: for xl in spec.xlines: f.header[tr] = { segyio.su.offset : 1, segyio.su.iline : il, segyio.su.xline : xl } for value in spec.samples: print(value) f.trace[tr] = arrtrace[value][tr] tr += 1 f.bin.update( tsort=segyio.TraceSortingFormat.INLINE_SORTING ) and error:

[ErlendHaa]

Sorry for the delayed answer. When setting a trace for you file segyio expect the data you provide to be of 16000bytes, or 4000 samples (of 32 bit floats). Which is correct (spec.samples = range(int(4000))). Can you confirmed that len(arrtrace[value][tr]) == 4000?