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| literals | |
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| parser | |
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| io | |
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| fileformat | |
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| pyarrow | |
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| manifest | |
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| partitioning | |
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| schema | |
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| serializers | |
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| table | |
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| inspect | |
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| locations | |
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| maintenance | |
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| metadata | |
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| name_mapping | |
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| puffin | |
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| refs | |
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| snapshots | |
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| sorting | |
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| statistics | |
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| transforms | |
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| typedef | |
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| <h1 id="geospatial-types">Geospatial Types<a class="headerlink" href="#geospatial-types" title="Permanent link">¶</a></h1> | |
| <p>PyIceberg supports Iceberg v3 geospatial primitive types: <code>geometry</code> and <code>geography</code>.</p> | |
| <h2 id="overview">Overview<a class="headerlink" href="#overview" title="Permanent link">¶</a></h2> | |
| <p>Iceberg v3 introduces native support for spatial data types:</p> | |
| <ul> | |
| <li><strong><code>geometry(C)</code></strong>: Represents geometric shapes in a coordinate reference system (CRS)</li> | |
| <li><strong><code>geography(C, A)</code></strong>: Represents geographic shapes with CRS and calculation algorithm</li> | |
| </ul> | |
| <p>Both types store values as WKB (Well-Known Binary) bytes.</p> | |
| <h2 id="requirements">Requirements<a class="headerlink" href="#requirements" title="Permanent link">¶</a></h2> | |
| <ul> | |
| <li>Iceberg format version 3 or higher</li> | |
| <li>Optional: <code>geoarrow-pyarrow</code> for GeoArrow extension type metadata and interoperability. Without it, geometry and geography are written as binary in Parquet while the Iceberg schema still preserves the spatial type. Install with <code>pip install pyiceberg[geoarrow]</code>.</li> | |
| </ul> | |
| <h2 id="usage">Usage<a class="headerlink" href="#usage" title="Permanent link">¶</a></h2> | |
| <h3 id="declaring-columns">Declaring Columns<a class="headerlink" href="#declaring-columns" title="Permanent link">¶</a></h3> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">pyiceberg.schema</span><span class="w"> </span><span class="kn">import</span> <span class="n">Schema</span> | |
| <a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="kn">from</span><span class="w"> </span><span class="nn">pyiceberg.types</span><span class="w"> </span><span class="kn">import</span> <span class="n">NestedField</span><span class="p">,</span> <span class="n">GeometryType</span><span class="p">,</span> <span class="n">GeographyType</span> | |
| <a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a> | |
| <a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="c1"># Schema with geometry and geography columns</span> | |
| <a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="n">schema</span> <span class="o">=</span> <span class="n">Schema</span><span class="p">(</span> | |
| <a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a> <span class="n">NestedField</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s2">"id"</span><span class="p">,</span> <span class="n">IntegerType</span><span class="p">(),</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">),</span> | |
| <a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a> <span class="n">NestedField</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="s2">"location"</span><span class="p">,</span> <span class="n">GeometryType</span><span class="p">(),</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">),</span> | |
| <a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="n">NestedField</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="s2">"boundary"</span><span class="p">,</span> <span class="n">GeographyType</span><span class="p">(),</span> <span class="n">required</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span> | |
| <a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a><span class="p">)</span> | |
| </code></pre></div> | |
| <h3 id="type-parameters">Type Parameters<a class="headerlink" href="#type-parameters" title="Permanent link">¶</a></h3> | |
| <h4 id="geometrytype">GeometryType<a class="headerlink" href="#geometrytype" title="Permanent link">¶</a></h4> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="c1"># Default CRS (OGC:CRS84)</span> | |
| <a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="n">GeometryType</span><span class="p">()</span> | |
| <a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a> | |
| <a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="c1"># Custom CRS</span> | |
| <a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="n">GeometryType</span><span class="p">(</span><span class="s2">"EPSG:4326"</span><span class="p">)</span> | |
| </code></pre></div> | |
| <h4 id="geographytype">GeographyType<a class="headerlink" href="#geographytype" title="Permanent link">¶</a></h4> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="c1"># Default CRS (OGC:CRS84) and algorithm (spherical)</span> | |
| <a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="n">GeographyType</span><span class="p">()</span> | |
| <a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a> | |
| <a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="c1"># Custom CRS</span> | |
| <a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="n">GeographyType</span><span class="p">(</span><span class="s2">"EPSG:4326"</span><span class="p">)</span> | |
| <a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a> | |
| <a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="c1"># Custom CRS and algorithm</span> | |
| <a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="n">GeographyType</span><span class="p">(</span><span class="s2">"EPSG:4326"</span><span class="p">,</span> <span class="s2">"planar"</span><span class="p">)</span> | |
| </code></pre></div> | |
| <h3 id="string-type-syntax">String Type Syntax<a class="headerlink" href="#string-type-syntax" title="Permanent link">¶</a></h3> | |
| <p>Types can also be specified as strings in schema definitions:</p> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="c1"># Using string type names</span> | |
| <a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="n">NestedField</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="s2">"point"</span><span class="p">,</span> <span class="s2">"geometry"</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> | |
| <a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="n">NestedField</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="s2">"region"</span><span class="p">,</span> <span class="s2">"geography"</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> | |
| <a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a> | |
| <a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="c1"># With parameters</span> | |
| <a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="n">NestedField</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="s2">"location"</span><span class="p">,</span> <span class="s2">"geometry('EPSG:4326')"</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> | |
| <a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="n">NestedField</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="s2">"boundary"</span><span class="p">,</span> <span class="s2">"geography('EPSG:4326', 'planar')"</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> | |
| </code></pre></div> | |
| <h2 id="data-representation">Data Representation<a class="headerlink" href="#data-representation" title="Permanent link">¶</a></h2> | |
| <p>Values are represented as WKB (Well-Known Binary) bytes at runtime:</p> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="c1"># Example: Point(0, 0) in WKB format</span> | |
| <a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="n">point_wkb</span> <span class="o">=</span> <span class="nb">bytes</span><span class="o">.</span><span class="n">fromhex</span><span class="p">(</span><span class="s2">"0101000000000000000000000000000000000000"</span><span class="p">)</span> | |
| </code></pre></div> | |
| <h2 id="current-limitations">Current Limitations<a class="headerlink" href="#current-limitations" title="Permanent link">¶</a></h2> | |
| <ol> | |
| <li> | |
| <p><strong>WKB/WKT Conversion</strong>: Converting between WKB bytes and WKT strings requires external libraries (like Shapely). PyIceberg does not include this conversion to avoid heavy dependencies.</p> | |
| </li> | |
| <li> | |
| <p><strong>Spatial Predicates</strong>: Spatial filtering (e.g., ST_Contains, ST_Intersects) is not yet supported for query pushdown.</p> | |
| </li> | |
| <li> | |
| <p><strong>Bounds Metrics</strong>: Geometry/geography columns do not currently contribute to data file bounds metrics.</p> | |
| </li> | |
| <li> | |
| <p><strong>Without geoarrow-pyarrow</strong>: When the <code>geoarrow-pyarrow</code> package is not installed, geometry and geography columns are stored as binary without GeoArrow extension type metadata. The Iceberg schema preserves type information, but other tools reading the Parquet files directly may not recognize them as spatial types. Install with <code>pip install pyiceberg[geoarrow]</code> for full GeoArrow support.</p> | |
| </li> | |
| </ol> | |
| <h2 id="format-version">Format Version<a class="headerlink" href="#format-version" title="Permanent link">¶</a></h2> | |
| <p>Geometry and geography types require Iceberg format version 3:</p> | |
| <div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">pyiceberg.table</span><span class="w"> </span><span class="kn">import</span> <span class="n">TableProperties</span> | |
| <a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a> | |
| <a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="c1"># Creating a v3 table</span> | |
| <a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="n">table</span> <span class="o">=</span> <span class="n">catalog</span><span class="o">.</span><span class="n">create_table</span><span class="p">(</span> | |
| <a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a> <span class="n">identifier</span><span class="o">=</span><span class="s2">"db.spatial_table"</span><span class="p">,</span> | |
| <a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a> <span class="n">schema</span><span class="o">=</span><span class="n">schema</span><span class="p">,</span> | |
| <a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a> <span class="n">properties</span><span class="o">=</span><span class="p">{</span> | |
| <a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a> <span class="n">TableProperties</span><span class="o">.</span><span class="n">FORMAT_VERSION</span><span class="p">:</span> <span class="s2">"3"</span> | |
| <a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a> <span class="p">}</span> | |
| <a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a><span class="p">)</span> | |
| </code></pre></div> | |
| <p>Attempting to use these types with format version 1 or 2 will raise a validation error.</p> | |
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