---
title: "Extended Methods on Geography Instances | Microsoft Docs"
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ms.date: "03/14/2017"
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---
# Extended Methods on Geography Instances
[!INCLUDE[tsql-appliesto-ss2012-asdb-xxxx-xxx-md](../../includes/tsql-appliesto-ss2012-asdb-xxxx-xxx-md.md)]

  [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] supports a number of extended methods on Open Geospatial Consortium (OGC) geography instances.  
  
 For more information on OGC specifications, see the following resources:  
  
-   [OGC Specifications, Simple Feature Access Part 1 - Common Architecture](https://go.microsoft.com/fwlink/?LinkId=93627)  
  
-   [OGC Specifications, Simple Feature Access Part 2 - SQL Options](https://go.microsoft.com/fwlink/?LinkId=93628)  
  
-   [OGC Specifications, Geography Markup Language](https://go.microsoft.com/fwlink/?LinkId=93629)  
  
## In This Section  
  
-   [AsBinaryZM (geography Data Type)](../../t-sql/spatial-geography/asbinaryzm-geography-data-type.md)  
  
-   [AsGml](../../t-sql/spatial-geography/asgml-geography-data-type.md)  
  
-   [AsTextZM](../../t-sql/spatial-geography/astextzm-geography-data-type.md)  
  
-   [BufferWithCurves (geography Data Type)](../../t-sql/spatial-geography/bufferwithcurves-geography-data-type.md)  
  
-   [BufferWithTolerance](../../t-sql/spatial-geography/bufferwithtolerance-geography-data-type.md)  
  
-   [CurveToLineWithTolerance (geography Data Type)](../../t-sql/spatial-geography/curvetolinewithtolerance-geography-data-type.md)  
  
-   [EnvelopeAngle](../../t-sql/spatial-geography/envelopeangle-geography-data-type.md)  
  
-   [EnvelopeCenter](../../t-sql/spatial-geography/envelopecenter-geography-data-type.md)  
  
-   [Filter](../../t-sql/spatial-geography/filter-geography-data-type.md)  
  
-   [HasM (geography Data Type)](../../t-sql/spatial-geography/hasm-geography-data-type.md)  
  
-   [HasZ (geography Data Type)](../../t-sql/spatial-geography/hasz-geography-data-type.md)  
  
-   [InstanceOf](../../t-sql/spatial-geography/instanceof-geography-data-type.md)  
  
-   [IsNull](../../t-sql/spatial-geography/isnull-geography-data-type.md)  
  
-   [IsValidDetailed (geography Data Type)](../../t-sql/spatial-geography/isvaliddetailed-geography-data-type.md)  
  
-   [Lat](../../t-sql/spatial-geography/lat-geography-data-type.md)  
  
-   [Long](../../t-sql/spatial-geography/long-geography-data-type.md)  
  
-   [M](../../t-sql/spatial-geography/m-geography-data-type.md)  
  
-   [MakeValid](../../t-sql/spatial-geography/makevalid-geography-data-type.md)  
  
-   [MinDbCompatibilityLevel (geography Data Type)](../../t-sql/spatial-geography/mindbcompatibilitylevel-geography-data-type.md)  
  
-   [NumRing](../../t-sql/spatial-geography/numrings-geography-data-type.md)  
  
-   [Reduce](../../t-sql/spatial-geography/reduce-geography-data-type.md)  
  
-   [ReorientObject](../../t-sql/spatial-geography/reorientobject-geography-data-type.md)  
  
-   [RingN](../../t-sql/spatial-geography/ringn-geography-data-type.md)  
  
-   [ShortestLineTo (geography Data Type)](../../t-sql/spatial-geography/shortestlineto-geography-data-type.md)  
  
-   [ToString](../../t-sql/spatial-geography/tostring-geography-data-type.md)  
  
-   [Z](../../t-sql/spatial-geography/z-geography-data-type.md)  
  
## See Also  
 [OGC Methods on Geography Instances](../../t-sql/spatial-geography/ogc-methods-on-geography-instances.md)   
 [OGC Static Geography Methods](../../t-sql/spatial-geography/ogc-static-geography-methods.md)   
 [Extended Static Geography Methods](../../t-sql/spatial-geography/extended-static-geography-methods.md)