Module Documentation: eml-spatialRaster

Description of a GIS layer composed of raster pixels comprising a regular-pattern grid. Generally, a raster object may be thought of as a pattern of closely spaced rows of dots that collectively form an image. Raster spatial objects are used to locate zero-, two-, or three-dimensional locations in the dataset
Example(s):
An interpolated grid of irregularly spaced data is an example of this element.

The list of attributes associated with this entity. For more information see the eml-attribute module.

Description of any relational constraints on this entity. For more information see the eml-constraint module.

Spatial Referencing systems define the coordinates used to describe horizontal and vertical locations. These are typically either geographic, projected planar, or arbitrary planar.

Information on how to position the grid within the coordinate system defined in the spatial reference module.

Location of a corner on the coordinate system defined in the spatial reference module. Use this element when the rows and columns of the grid are aligned with the coordinate system. One or more corner points are needed to locate a rectified grid.

Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module.
Example(s):
455000

Y Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module.
Example(s):
3455000

Location within the pixel of the georeferencing point.
Example(s):
upperLeft

Derived from: xs:string (by xs:restriction)

Allowed values:

• upperLeft
• upperRight
• lowerRight
• lowerLeft
• center

Identification of the corner in the grid corresponding to the coordinates provided.
Example(s):
Upper Left

If the grid is rectified to the coordinate system, then a single point may be used to position the grid. Otherwise, a series of points is necessary to fit the grid to the coordinate system.

Column location of the georeferencing point indicated as the nth column counting the cell indicated in rasterOrigin as column 1.
Example(s):
1

Row location of the georeferencing point indicated as the nth row counting the cell indicated in rasterOrigin as row 1.
Example(s):
1

Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module.
Example(s):
455000

Y Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module.
Example(s):
3455000

Location within the pixel of the georeferencing point.
Example(s):
upperLeft

Derived from: xs:string (by xs:restriction)

Allowed values:

• upperLeft
• upperRight
• lowerRight
• lowerLeft
• center

Intercept and slope terms to describe the orientation and position of the grid to the coordinate system based on corner point identified in the rasterOrigin element. defined in the spatial Reference module.

X Intercept of the rasterOrigin point within the coordinate system.
Example(s):
3455000

Slope describing transformation of grid cell distances into x coordinates.
Example(s):
5.0123

Location of the rasterOrigin point on the y axis of the the coordinate system.
Example(s):
455000

Slope describing transformation of grid cell distances into y axis coordinates.
Example(s):
5.0123

Horizontal accuracy may be reported either as a quantitative estimate expressed in the units of the coordinate system or as a text assessment.

Vertical accuracy may be reported either as a quantitative estimate expressed in the units of the height or depth measurement system or as a text assessment.

Cell sizes should be expressed in the units declared in the spatialReference module.
Example(s):
28.5

Cell sizes should be expressed in the units declared in the spatialReference module.
Example(s):
28.5

Image data may have more than one sensor band represented for each pixel.
Example(s):
7

Identification the corner of the grid where the first values for both the x and y axes begin in the file.
Example(s):
Upper Left

Maximum number of raster objects along the ordinate (y) axis
Example(s):
455

Maximum number of raster objects along the abscissa (x) axis
Example(s):
455

Maximum number of raster objects along the vertical (z) axis.

Indication of whether the cell value is representative of a single point(matrix) within the cell or the entire cell (pixel)
Example(s):
pixel

Number of colors present in the image.
Example(s):
255

The scale factor is used for raster-rescaling operations, where the following operation is applied to each pixel in the data in the source: rescaled=(source*scaleFactor)+offset.
Example(s):
2

The offset is used for raster-rescaling operations, where the following operation is applied to each pixel in the data in the source: rescaled=(source*scaleFactor)+offset.
Example(s):
20

Provides information about the image's suitability for use, sensor properties, and individual band descriptions.

Illumination elevation measured in degrees clockwise from the target plane at intersection of the optical line of sight with the earth's surface.
Example(s):
45.5

Illumination azimuth measured in degrees clockwise from true north at the time the image is taken.
Example(s):
45.5

Angle from the first row of the image to true north in degrees, clockwise.
Example(s):
45.5

Code which indicates conditions which affect the quality of the image.
Example(s):
cloud

Specifies the image quality.
Example(s):
Excellent

Area of the dataset obscured by clouds, expressed as a percentage of the spatial extent.
Example(s):
12

Image distributor's code that identifies the level of radiometric and geometric processing applied against the image.
Example(s):
LEVELl1A, SPOTVIEWORTHO

Counts the number of lossy compression cycles performed on the image.
Example(s):
2

Code which indicates whether or not triangulation has been performed upon the image.
Example(s):
false

Code which indicates whether or not Standard Radiometric Product data is available.
Example(s):
false

Code which indicates whether or not constants are available which allow for camera calibration corrections.
Example(s):
false

Code which indicates whether or not Calibration Reseau information is available
Example(s):
true

Code which indicates whether or not lens aberration correction information is available
Example(s):
true

Description of the wavelength domain that the sensor operates in

Number that uniquely identifies instances of bands of wavelengths on which a sensor operates.
Example(s):
3

Highest wavelength that the sensor is capable of collecting within a designated band.
Example(s):
2.456

Lowest wavelength that the sensor is capable of collecting within a designated band.
Example(s):
0.1234

Units of measure for the wavelength at which the sensor collected the data.
Example(s):
microns

A text statement of the data quality, included the means by which it was determined.

A quantitative assessment of the data quality expressed as a value and the method of its determination.

The value resulting from the accuracy test. Typically, this will be expressed in units corresponding to those declared for the parameter being assessed.
Example(s):
4.5

Identification and explanation of the method used to calculate the quantitative accuracy assessment.
Example(s):
Error expressed as root mean square of 5 control points.

Type: res:IDType

Use: optional

Type: res:SystemType

Use: optional

Type: res:ScopeType

Use: optional

Default value: document

Derived from: xs:string (by xs:restriction)

Allowed values:

• Values
• Coded
• RGB
• Codes
• HIS
• HLS
• tekHVC

Derived from: xs:string (by xs:restriction)

Allowed values:

• blurredimage
• cloud
• degradingObliquity
• fog
• heavySmokeorDust
• night
• rain
• semiDarkness
• shadow
• snow
• terrainMasking

Derived from: xs:string (by xs:restriction)

Allowed values:

• Upper Left
• Lower Left
• Upper Right
• Lower Right

Derived from: xs:string (by xs:restriction)

Allowed values:

• pixel
• matrix