Copyright: 1997-2002 Regents of the University of California, University of New Mexico, and Arizona State University Sponsors: National Center for Ecological Analysis and Synthesis and Partnership for Interdisciplinary Studies of Coastal Oceans, University of California Santa Barbara Long-Term Ecological Research Network Office, University of New Mexico Center for Environmental Studies, Arizona State University Other funding: National Science Foundation (see README for details) The David and Lucile Packard Foundation For Details: http://knb.ecoinformatics.org/ '$Author: jones $' '$Date: 2003-11-06 20:15:21 $' '$Revision: 1.42 $' This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA eml-spatialRaster

The eml-spatialRaster module allows for the description of entities composed of rectangular grids of data values that are usually georeferenced to a portion of the earth's surface. Specific attributes of a spatial raster can be documented here including the spatial organization of the raster cells, the cell data values, and if derived via imaging sensors, characteristics about the image and its individual bands.

all spatial datasets that use spatial gridded data yes Spatial Raster Description of a gis layer composed of raster pixels. 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 An interpolated grid of irregularly spaced data is an example of this element. Spatial Raster Type Attribute List The list of attributes associated with this entity. The list of attributes associated with this entity. For more information see the eml-attribute module. Constraint Description of any relational constraints on this entity. Description of any relational constraints on this entity. For more information see the eml-constraint module. Spatial Reference The means by which positional information in this entity is related to points on the earth's surface. Spatial Referencing systems define the coordinates used to describe horizonal and vertical locations. These are typically either geographic, projected planar, or arbitrary planar. Georeferenc information Information on how to position the grid wtihin the coordinate system defined in the spatial reference module. Information on how to position the grid wtihin the coordinate system defined in the spatial reference module. Corner point Location of a corner on a rectified grid within the coordinate system. 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. X coordinate X Location of the georeferencing point in the X diminsion of the coordinate system. Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module. 455000 Y coordinate Location of the georeferencing point in the Y dimension of the coordinate system. Y Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module. 3455000 Point in Pixel Location within the pixel of the georeferencing point. Location within the pixel of the georeferencing point. upperLeft Corner Identification of the corner in the grid corresponding to the coordinates provided. Identification of the corner in the grid corresponding to the coordinates provided. Upper Left Georeference Point A point defined in both grid cell and georeferenced coordinates that is used to position the raster grid within the coordinate system defined in the spatialReference modoule. 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 Column location of the georeferencing point in the grid. Column location of the georeferencing point indicated as the nth column counting the cell indicated in rasterOrigin as column 1. 1 Row Row location of the georeferencing point in the grid. Row location of the georeferencing point indicated as the nth row counting the cell indicated in rasterOrigin as row 1. 1 X coordinate X Location of the georeferencing point in the X diminsion of the coordinate system. Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module. 455000 Y coordinate Location of the georeferencing point in the Y dimension of the coordinate system. Y Location of the georeferencing point expressed in units of the coordinate system defined in the spatial Reference module. 3455000 Point in Pixel Location within the pixel of the georeferencing point. Location within the pixel of the georeferencing point. upperLeft Bilinear Fit Terms of a bilinear model to fit the grid to the coordinate system. 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 Location of the rasterOrigin point on the x axis of the the coordinate system. X Intercept of the rasterOrigin point within the coordinate system. 3455000 X slope Slope describing transformation of grid cell distances into x coorinates. Slope describing transformation of grid cell distances into x coorinates. 5.0123 Y Intercept Location of the rasterOrigin point on the y axis of the the coordinate system. Location of the rasterOrigin point on the y axis of the the coordinate system. 455000 X slope Slope describing transformation of grid cell distances into y axis coordinates. Slope describing transformation of grid cell distances into y axis coordinates. 5.0123 Horizontal Accuracy The accuracy of horizontal locational measurements within the data. Horizonal accuracy may be reported either as a quantitative estimate expressed in the units of the coordinate system or as a text assessment. Vertical Accuracy The accuracy of vertical locational measurements within the data. Vertical accuracy may be reported either as a quantitative estimate expressed in the units of the height or depth measurment system or as a text assessment. Cell Size X Direction The width of the cell in the x direction. Cell sizes should be expressed in the units declared in the spatialReference module. 28.5 Cell Size Y Direction The width of the cell in the x direction. Cell sizes should be expressed in the units declared in the spatialReference module. 28.5 Number Of Bands The number of bands in the image. Image data may have more than one sensor band represented for each pixel. 7 Raster Origin The corner location of the pixel having the minimum x and y values Identification the corner of the grid where the first values for both the x and y axes begin in the file. Upper Left Rows Maximum number of raster objects along the ordinate (y) axis Maximum number of raster objects along the ordinate (y) axis 455 Columns Maximum number of raster objects along the abscissa (x) axis Maximum number of raster objects along the abscissa (x) axis 455 Verticals Maximum number of raster objects along the vertical (z) axis Maximum number of raster objects along the vertical (z) axis. Cell Geometry Geometric representation of the cell's content. Indication of whether the cell value is representative of a single point(matrix) within the cell or the entire cell (pixel) pixel Tone Gradation Number of colors present in the image. Number of colors present in the image. 255 Scale Factor The value used for scaling the source raster. 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. 2 Offset The offset value used for scaling the source raster. 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. 20 Image Description Detailed information for data derived from image sensors. Provides information about the image's suitability for use, sensor properties, and individual band descriptions. Illumination Elevation Angle Illumination elevation measured in degrees clockwise from the target plane at intersection of the optical line of sight with the earth's surface. Illumination elevation measured in degrees clockwise from the target plane at intersection of the optical line of sight with the earth's surface. 45.5 Illumination Azimuth Angle Illumitation azimuth measured in degrees clockwise from true north at the time the image is taken. Illumitation azimuth measured in degrees clockwise from true north at the time the image is taken. 45.5 Image Orientation Angle Angle from the first row of the image to true north in degrees, clockwise. Angle from the first row of the image to true north in degrees, clockwise. 45.5 Imaging Condition Code which indicates conditions which affect the quality of the image. Code which indicates conditions which affect the quality of the image. cloud Image Quality Code Specifies the image quality. Specifies the image quality. Excellent Cloud Cover Percentage Area of the dataset obscured by clouds, expressed as a percentage of the spatial extent. Area of the dataset obscured by clouds, expressed as a percentage of the spatial extent. 12 Preprocessing Type Code Image distributor's code that idnetifies the level of radiometric and geometric proseccing applied against the image. Image distributor's code that idnetifies the level of radiometric and geometric proseccing applied against the image. LEVELl1A, SPOTVIEWORTHO Compression Generation Quality Counts the number of lossy compression cycles performed on the image. Counts the number of lossy compression cycles performed on the image. 2 Triangulation Indicator Code which indicates whether or not triangulation has been performed upon the image. Code which indicates whether or not triangulation has been performed upon the image. false Radiometric Data Availability Code which indicates whether or not Standard Radiometric Product data is available. Code which indicates whether or not Standard Radiometric Product data is available. false Camera Calibration Information Availability Code which indicates whether or not constants are available which allow for camera calibration corrections. Code which indicates whether or not constants are available which allow for camera calibration corrections. false Film Distortion Information Availability Code which indicates whether or not Calibration Reseau information is available Code which indicates whether or not Calibration Reseau information is available true Lens Distortion Information Availability Code which indicates whether or not lens aberration correction information is available Code which indicates whether or not lens aberration correction information is available true Band Description Description of the wavelength domain that the sensor operates in. Description of the wavelength domain that the sensor operates in Band Type Complex type definition for band description. Sequence Identifier Number that uniquely identifies instances of bands of wavelengths on which a sensor operates. Number that uniquely identifies instances of bands of wavelengths on which a sensor operates. 3 High Wavelength Highest wavelength that the sensor is capable of collecting within a designated band in metres. Highest wavelength that the sensor is capable of collecting within a designated band. 2.456 Low Wavelength Lowest wavelength that the sensor is capable of collecting within a designated band in metres. Lowest wavelength that the sensor is capable of collecting within a designated band. 0.1234 Wave Length Units Units in which the sensor wavelegths are expressed. Units of measure for the wavelength at which the sensor collected the data. microns Peak Response Wavelength at which the response is the highest. Cell Value Type Imaging Condition Code Type Raster Origin Type Cell Geometry Type Data Quality Type Accuracy Report A qualitative statement about the accuracy of the data. A text statement of the data quality, included the means by which it was determined. Quantitative Accuracy Report A quantitative assessment of the data quality. A quantitative assessment of the data quality expressed as a value and the method of its determination. Quantitative Accuracy Value The value resulting from the accuracy test. The value resulting from the accuracy test. Typically, this will be expressed in units corresponding to those declared for the parameter being assessed. 4.5 Quantitative Accuracy Method The method used to caclulate the accuracy value. Identification and explanation of the method used to caclulate the quantitative accuracy assessment. Error expressed as root mean square of 5 control points.