What is difference between SampleData[Sequences] and FeatureData[Sequence]?

[guangingmai]

What is difference between SampleData[Sequences] and FeatureData[Sequence]? Can anyone tell me something about that?
Here, i have some .fna files after quality control, and i want to import these files into qiime2, but there are two ways with different importing type. Which one should i choose?
first:
time qiime tools import
–input-path sequence.fna
–output-path seqs.qza
–type ‘SampleData[Sequences]’
second:
time qiime tools import
–input-path sequences.fna
–output-path sequences.qza
–type ‘FeatureData[Sequence]’

[jwdebelius (Justine Debelius)]

Hi @guangingmai,

I think the documentation of semantic types may be a good place to answer your question.

Best,
Justine

[guangingmai]

Thanks, this good for my.