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[FIX] clarify no blank and duplicated headers in TSV #1116

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merged 4 commits into from
Jul 12, 2022
Merged

[FIX] clarify no blank and duplicated headers in TSV #1116

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bee6b9d
FIX: clarify no blank and duplicated headers in TSV
sappelhoff Jun 7, 2022
ea9a3a4
also add a note to physio/stim
sappelhoff Jun 7, 2022
32a4350
restructure and clarify physio section
sappelhoff Jul 12, 2022
01d2c93
fix md
sappelhoff Jul 12, 2022
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4 changes: 3 additions & 1 deletion src/02-common-principles.md
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Expand Up @@ -434,10 +434,12 @@ files where commas are replaced by tabs. Tabs MUST be true tab characters and
MUST NOT be a series of space characters. Each TSV file MUST start with a header
line listing the names of all columns (with the exception of
[physiological and other continuous recordings](04-modality-specific-files/06-physiological-and-other-continuous-recordings.md)).
Names MUST be separated with tabs.
It is RECOMMENDED that the column names in the header of the TSV file are
written in [`snake_case`](https://en.wikipedia.org/wiki/Snake_case) with the
first letter in lower case (for example, `variable_name`, not `Variable_name`).
As for all other data in the TSV files, column names MUST be separated with tabs.
Furthermore, column names MUST NOT be blank (that is, an empty string) and MUST NOT
be duplicated within a single TSV file.
String values containing tabs MUST be escaped using double
quotes. Missing and non-applicable values MUST be coded as `n/a`. Numerical
values MUST employ the dot (`.`) as decimal separator and MAY be specified
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