bugGNU Octave - Bugs: bug #56263, [octave forge] (dataframe)...


bug #56263: [octave forge] (dataframe) dataframe ignores second line when reading csv file with all strings

Submitted by:  Bo <bpeng2000>
Submitted on:  Fri 03 May 2019 05:26:22 PM UTC  
Category:  Octave Forge Package Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Confirmed Assigned to:  None
Originator Name:  Bo Open/Closed:  Open
Release:  other Operating System:  Any

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Wed 08 May 2019 08:45:08 PM UTC, comment #2:

the purpose of a second line with all chars is to indicate columns type. This line was silently removed.

I changed the behaviour: the second line is removed if
1) all fields are char
2) all fields are valid argument for the "cast" function

I'll release shortly a new version



Pascal Dupuis <cdemills>
Project Member
Sat 04 May 2019 04:57:41 PM UTC, comment #1:

Confirmed with dev Octave (6.0.0) & dataframe-1.2.0.

I tried to have a look to see if it were something simple but dataframe.m is quite a complicated function (and I actually lack time).

cc'ing package maintainer.

Philip Nienhuis <philipnienhuis>
Project Member
Fri 03 May 2019 05:26:22 PM UTC, original submission:

With the attached csv files.

For dataframe with all characters

The second line is ignored. For a csv file with similar content but a numeric column,

loading it yields 4 rows correctly

Bo <bpeng2000>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-05-04 philipnienhuis StatusNone => Confirmed
        Carbon-Copy- => Added -email is unavailable-
    2019-05-03 siko1056 Summarydataframe ignores second line when reading csv file with all strings => [octave forge] (dataframe) dataframe ignores second line when reading csv file with all strings

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