Hello,
sorry for intervening as an outsider...but maybe a tiny contribution...

Am 26.04.2013 02:39, schrieb Nathan Woodrow:
Hey Chris,

1) I don't think there is any limit.  The name is just stored as a
QString so anything it supports QGIS should too.

There are some limits in shapefiles concerning names in the attribute table, coming from the dbf - format. So, if at first the column names are e.g. longer than the eight characters allowed in dbf, and the user stores the data later as a shapefile, in this way, a problem could maybe arise, especially if the long names are similar at the beginning...

regards,
Albin



2) I have noticed that too it is quite confusing at times.  To me fields
should refer to the column information, and attributes should refer to
the data it self, but that is not always the case in the API.

- Nathan


On Fri, Apr 26, 2013 at 10:33 AM, Chris Crook <ccr...@linz.govt.nz
<mailto:ccr...@linz.govt.nz>> wrote:

    Couple of questions with regard to QgsFeature fields and attributes:

    1) Are there any guidelines/constraints regarding field names.  The
    delimited text provider can take names from the first line of a text
    file, and that can be very arbitrary.  I'm wondering if I should put
    more constraints on the names (maximum number of characters, valid
    character set, other...)

    2) It seems that fields get referred to in various places as fields
    and attributes in the API.  Is there any logic to this.  That is to
    say, where should I use the word "field", and where should I use the
    word "attribute"?

    Thanks
    Chris

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