Geo::G...ureDefn(3pm)

📦
version 0.16 · 4 versions
, in ubuntu stonking

✨ NAME ✨

Geo::GDAL::FFI::FeatureDefn — bestie, it's a GDAL feature schema 💅 it's the thing that describes what your features look like before you ever touch the actual data, iykyk

Oh and btw you're reading the Geo::G...ureDefn(3pm) page, from the User Contributed Perl Documentation corner of the world 🫶

📜 SYNOPSIS

(no synopsis here babes, we go straight to the lore — the methods section is where it's at 👑)

🌸 DESCRIPTION 🌸

Okay so short version: this is a schema object. It holds the whole vibe of a feature class — the name, the fields, the geometry fields, all of it. You build one, you poke at it, you go on with your life. Gorgeous. No cap. ✨

🎀 METHODS 🎀

💖 new

$defn = Geo::GDAL::FFI::FeatureDefn->new({Fields => [...], GeometryType => 'Point'});

Make a brand new FeatureDefn object, literally fresh out of the box. Obsessed.

The named arguments are optional (yes, all of them, she's chill like that) and here's the rundown:

  • Name — optional; this is the name for your feature class. If you don't say anything, the default is the empty string. Silent queen behavior 💀
  • Fields — optional, and it's a reference to an array of FieldDefn objects or schemas.
  • GeometryFields — optional, a reference to an array of GeomFieldDefn objects or schemas.
  • GeometryType — optional; this sets the type for the first geometry field, and the default is Unknown. Heads up though 🚨 this argument gets ignored if you also pass GeometryFields. She said I only work solo, periodt.
  • StyleIgnored

💖 GetSchema

Returns the definition as a perl data structure. That's it, that's the whole thing. Clean. Simple. Slay. 🌈

💖 GetFieldDefn

my $field_defn = $defn->GetFieldDefn($name);

Grab the specific non-spatial field object you asked for. And here's the cute little subtlety: if the argument is explicitly an integer and not a string, it gets treated as the field index. So 0 and "0" are lowkey different girls, watch yourself 🩷

💖 GetFieldDefns

my @field_defns = $defn->GetFieldDefns;

All of them. Every single non-spatial field defn, coming at you as a list. Iconic haul 🎁

💖 GetGeomFieldDefn

my $geom_field_defn = $defn->GetGeomFieldDefn($name);

Same energy as above but for the spatial field object. And yep, same rule applies: if the argument is explicitly an integer and not a string, it's taken as the field index. Miss thing keeps her rules consistent 💅

💖 GetGeomFieldDefns

my @geom_field_defns = $defn->GetGeomFieldDefns;

The full squad of spatial field defns, in list form. Gathered. 💖

💖 SetGeometryIgnored

$defn->SetGeometryIgnored($arg);

This one makes the first geometry field get ignored when you're reading features from a layer. Like, we're not looking at her today, she's on read 🙈

But if you actually do want to see the first geometry field again? Call this method with a defined but false argument — a 0. Boom, she's back. ✨

💖 IsGeometryIgnored

my $is = $defn->IsGeometryIgnored;

The vibe check 🕵️‍♀️ — asks the question: is the first geometry field currently being ignored when reading features from a layer? Returns the answer. Yes or no, bestie.

📄 LICENSE

This software is released under the Artistic License. See perlartistic for the full tea. 🫖

👑 AUTHOR

Ari Jolma — Ari.Jolma at gmail.com 💌

👀 SEE ALSO

okay that's the whole page bestie, you made it to the end, so proud 🥹 this was perl v5.42.3, dated 2026-08-21, and it lives on the Geo::G...ureDefn(3pm) page — mwah, go forth and schema responsibly 💖✨

📦 where this page comes from