5xx Introduction

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514  Data Quality Note (NR)

Input Standards

Optional/Optional
1st Indicator  Undefined
blank character Undefined
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa Attribute accuracy report (NR) Required if applicable/Required if applicable
ǂb Attribute accuracy value (R) Required if applicable/Required if applicable
ǂc Attribute accuracy explanation (R) Required if applicable/Required if applicable
ǂd Logical consistency report (NR) Required if applicable/Required if applicable
ǂe Completeness report (NR) Required if applicable/Required if applicable
ǂf Horizontal position accuracy report (NR) Required if applicable/Required if applicable
ǂg Horizontal position accuracy value (R) Required if applicable/Required if applicable
ǂh Horizontal position accuracy explanation (R) Required if applicable/Required if applicable
ǂi Vertical positional accuracy report (NR) Required if applicable/Required if applicable
ǂj Vertical positional accuracy value (R) Required if applicable/Required if applicable
ǂk Vertical positional accuracy explanation (R) Required if applicable/Required if applicable
ǂm Cloud cover (NR) Required if applicable/Required if applicable
ǂu Uniform Resource Identifier (R) Optional/Optional
ǂz Display note (R) Optional/Optional

Definition

A note about the general assessment of the quality of the data set constituting the item. Use primarily for cartographic materials.

MAP

For cartographic materials, use for recommendations on tests to be performed and information to be reported. Find more information about such tests in the Spatial Data Transfer Standard.

1st Indicator

Undefined. The 1st indicator position is undefined and contains a blank ( blank character ).

blank character

Undefined

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank ( blank character ).

blank character

Undefined

Subfields

 
ǂa Attribute accuracy report

An explanation of the accuracy of the identification of the entities and assignments of values in the data set. Use also to include a description of the tests used to determine data quality.

514     The map layer that displays Special Feature Symbols shows the approximate location of small (less than 2 acres in size) areas of soils... ǂd Quarter quadrangles edited and joined internally and to surrounding quads. All known errors corrected. ǂe The combination of spatial linework layer, Special Feature Symbols layer, and attribute data are considered a complete SSURGO dataset. ǂf The actual on ground transition between the area represented by the Special Feature Symbol and the surrounding soils generally is very narrow with a well defined edge. The center of the feature area was compiled and digitized as a point. The same standards for compilation and digitizing used for line data were applied to the development of the special feature symbols layer.
514     Low resolution image.
514     NED has a resolution of one arc-second (approximately 30 meters) for the conterminous United States, Hawaii and a resolution of two arc-seconds for Alaska.
ǂb Attribute accuracy value

An estimate of the accuracy of the identification of the entities and assignments of values in the data set.

514     ǂb Approximately 95%.
ǂc Attribute accuracy explanation

A definition of the thematic accuracy measure.

514     ǂc Village names compared to source map--all match, therefore errors are possible only if source maps are incorrect.
ǂd Logical consistency report

The fidelity of the relationships in the data set and the tests used.

514     ǂd No duplicate features are present. The shapefile is exported using Avenue request ExportClean. This request verifies and enforces the correctness of shapes.
ǂe Completeness report

The definitions used, generalizations, omissions, selection criteria, and other rules used to derive the data set.

514     ǂe After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials. Some of the cartographic problems with this data inherent in the original 1:100,000 USGS Topographic Quadrangle source data remain in that the density of features can be changed abruptly.
ǂf Horizontal position accuracy report

The accuracy of the horizontal coordinate measurements and a description of the tests used. Use of subfield ǂf is generally limited to cartographic materials.

514     ǂf The geospatial part of this data set was extracted from the 1990 Census Version TIGER/LineTM files (CD-ROM edition). The positional accuracy of the TIGER/Line coordinates at best meets the established National Map Accuracy standards (+/- 167 feet approximately) for the 1:100,000-scale source maps from the USGS. The level of positional accuracy in the TIGER/Line files is not suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface.
ǂg Horizontal position accuracy value

An estimate of the accuracy of the horizontal coordinate measurements in the data set expressed in (ground) meters. Use of subfield ǂg is generally limited to cartographic materials.

514     ǂg 3 meters.
ǂh Horizontal position accuracy explanation

A definition of the horizontal positional accuracy measure. Use of subfield ǂh is generally limited to cartographic materials.

514     ǂh Estimated maximum ground distance error in meters. A color hard copy of the Arabian Peninsula geology at 1:2,000,000 scale is superimposed onto the original Geologic Map of the Arabian Peninsula, 1:2,000,000 scale. For the Iraq portion of the Arabian Peninsula, a color hard copy of the Iraq geology at 1:5,000,000 scale is superimposed onto the original Geologic Map of Europe, Eastern sheet, 1:5,000,000 scale.
ǂi Vertical positional accuracy report

The accuracy of the vertical coordinate measurements and a description of the tests used. Use of subfield ǂi is generally limited to cartographic materials.

514     ǂi Although depths are reported to the nearest 1 km, the accuracy for recent earthquakes is considerably less owing to uncertainties in the velocity model of the earth, uneven distribution of seismic stations, and imprecisions in the computational algorithms. For earlier earthquakes, accuracy drops considerably more.
514     ǂi Bar test.
ǂj Vertical positional accuracy value

An estimate of the accuracy of the vertical coordinate measurement in the data set expressed in (ground) meters. Use of subfield ǂj is generally limited to cartographic materials.

514     ǂj One foot.
ǂk Vertical positional accuracy explanation

A definition of the vertical positional accuracy measure. Use of subfield ǂk is generally limited to cartographic materials.

514     ǂk Bar check.
ǂm Cloud cover

An area of a data set obstructed by clouds, expressed as a percentage of the geospatial extent. Use of subfield ǂm is generally limited to cartographic materials.

514     ǂm 60%.
ǂu Uniform Resource Identifier

For information about subfield ǂu, see Control Subfields. Repeat subfield if digital object has multiple identifiers (URIs).

514     ǂu http://spatialnews.geocomm.com/whitepapers/sdts-demmap.pdf.
ǂz Display note

A note that introduces the data in the field.

514 ǂz National elevation dataset FGDC compliant metadata: ǂu http://gisdata.usgs.net/NED/fgdcmetadata.asp.

This page last revised: August 22, 2016