Difference between revisions of "Starter Dictionary"
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+ | ==ESRI== | ||
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+ | ==ESRI Shapefile== | ||
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==Feature== | ==Feature== | ||
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'''Additional Explanation or Clarification:''' [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature Features] belonging to a geospatial data set typically share a common [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature_Schema feature schema] or set of [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature_Attributes feature attributes]. The term does not typically refer to a single [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature feature]. Geospatial datasets are often represented in a [http://wiki.osgeo.org/index.php/Starter_Dictionary#GIS GIS] by a thematic layer. Geospatial datasets are typically the main elements in a [http://wiki.osgeo.org/index.php/Starter_Dictionary#GIS_Data_Model GIS Data Model]. | '''Additional Explanation or Clarification:''' [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature Features] belonging to a geospatial data set typically share a common [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature_Schema feature schema] or set of [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature_Attributes feature attributes]. The term does not typically refer to a single [http://wiki.osgeo.org/index.php/Starter_Dictionary#Feature feature]. Geospatial datasets are often represented in a [http://wiki.osgeo.org/index.php/Starter_Dictionary#GIS GIS] by a thematic layer. Geospatial datasets are typically the main elements in a [http://wiki.osgeo.org/index.php/Starter_Dictionary#GIS_Data_Model GIS Data Model]. | ||
− | '''Example:''' An ESRI Shapefile with a set of line features representing city streets could be called a Geospatial data set. | + | '''Example:''' An [http://wiki.osgeo.org/index.php/Starter_Dictionary#ESRI_Shapefile ESRI Shapefile] with a set of line features representing city streets could be called a Geospatial data set. |
'''Associated Terms:''' | '''Associated Terms:''' | ||
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==Geospatial Metadata== | ==Geospatial Metadata== | ||
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+ | Metadata is often defined as "data about data". As an example, you might have metadata for a document might include the following information: | ||
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+ | Identify the purpose of the document. | ||
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+ | The date the document was written. | ||
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+ | The date the document was last revised. | ||
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+ | The author. | ||
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+ | Geospatial Metadata is information about a geospatial dataset that may not be contained in, or may not be readily apparent from, the Geospatial dataset itself. For example, you could view the coordinates of feature geometry in a vector data set, but may not be able to determine the spatial reference system from the coordinate values. You could view the name of a feature attribute, but that may not indicate what aspect of the real world that attribute represents. This is the type of inormation that can be encapsulated in geospatial metadata. | ||
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==Raster Data== | ==Raster Data== |
Revision as of 11:23, 18 December 2007
ESRI
ESRI Shapefile
Feature
Feature Geometry
Feature Attribute
Feature Schema
Geospatial Data Set
Simple Definition: A set or group of geospatial data with a common theme or association.
Additional Explanation or Clarification: Features belonging to a geospatial data set typically share a common feature schema or set of feature attributes. The term does not typically refer to a single feature. Geospatial datasets are often represented in a GIS by a thematic layer. Geospatial datasets are typically the main elements in a GIS Data Model.
Example: An ESRI Shapefile with a set of line features representing city streets could be called a Geospatial data set.
Associated Terms:
- Gespatial Dataset Definition
Also Known As:
- Data Set
References:
Links:
GIS
GIS Data Model
Geospatial Metadata
Metadata is often defined as "data about data". As an example, you might have metadata for a document might include the following information:
Identify the purpose of the document.
The date the document was written.
The date the document was last revised.
The author.
Geospatial Metadata is information about a geospatial dataset that may not be contained in, or may not be readily apparent from, the Geospatial dataset itself. For example, you could view the coordinates of feature geometry in a vector data set, but may not be able to determine the spatial reference system from the coordinate values. You could view the name of a feature attribute, but that may not indicate what aspect of the real world that attribute represents. This is the type of inormation that can be encapsulated in geospatial metadata.