Error: when I copy a file with ignore_geometry=True, but shorten all traces

[sion]

After copy a file, there is some errors when I open the new file:
trace count inconsistent with file size, trace lengths possibly of non-uniform
My code：

with segyio.open(srcpath, , ignore_geometry=True) as src:
... spec = segyio.tools.metadata(src)
... spec.samples = spec.samples[:len(spec.samples) - 50]
... with segyio.create(dstpath, spec) as dst:
... dst.text[0] = src.text[0]
... dst.bin = src.bin
... dst.header = src.header
... dst.trace = src.trace
file = segyio.open(dstpath, ignore_geometry=True)

[Erlend Hårstad]

Hi,

You have update the bin/trace headers when you reduce the number of slices. Have a look here: https://github.com/equinor/segyio/blob/master/python/examples/copy-sub-cube.py

[sion]

Hi,

You have update the bin/trace headers when you reduce the number of slices. Have a look here: https://github.com/equinor/segyio/blob/master/python/examples/copy-sub-cube.py

Thanks for your help. It works well,when I insert:
dst.bin = { segyio.BinField.Samples: len(spec.samples) - 50, segyio.BinField.Traces: src.tracecount }
Maybe the documentation should be modified? https://segyio.readthedocs.io/en/latest/segyio.html#segyio.create