Longitude/Latitude Reference Grid for 1:500,000-Scale Maps of Illinois

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Illinois State Geological Survey
Originator: Illinois Department of Natural Resources
Publication_Date: Unpublished Material
Title:
Longitude/Latitude Reference Grid for 1:500,000-Scale Maps of Illinois
Edition: 20040312
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: GISDB.IL_CARTO_Lon_Lat_Grid_500K
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey
Online_Linkage: <http://www.isgs.illinois.edu/>
Online_Linkage: <http://illinois.edu>
Description:
Abstract:
This SDE feature dataset contains lines and annotation representing a grid of longitude and latitude lines to be used as a reference layer on 1:500,000-scale maps. The grid lines are 1-degree by 1-degree and are clipped to the shape of Illinois with a mild overshoot. Annotation is placed at line endpoints just outside the Illinois state boundary.
Purpose:
This data set is primarily intended as a cartographic layer. It is not appropriate for local analysis or as a geodetic or engineering base.

This dataset serves as an important base cartographic element for many types of maps. The data set was not and is not intended as a substitute for surveyed locations, such as can be determined by a registered Public Land Surveyor. Although useful in a GIS as a reference base layer for maps, the data set has no legal basis in the definition of boundaries or property lines.

Supplemental_Information:
This is edition 20040312 of this feature datatset. While is has been available on ISGS file systems in coverage form for several years, managing the data as an ArcSDE feature datatset is new as of 1 April 2004. Metadata did not exist prior to this date.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -91.683216
East_Bounding_Coordinate: -87.313414
North_Bounding_Coordinate: 42.636543
South_Bounding_Coordinate: 36.898159
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: latitude
Theme_Keyword: longitude
Theme_Keyword: reference
Theme_Keyword: base
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Illinois
Access_Constraints:
ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current.

Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice.

Links to these are provided in the Cross References section.

Use_Constraints:
ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved.  University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section.

Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage.

Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.

Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data.  Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor.

The data do not replace the need for detailed site-specific studies.

Point_of_Contact:
Contact_Information:
Contact_Instructions: Please refer to the Distribution Information section.
Data_Set_Credit:
GIS Processing: ISGS Staff Documentation: ISGS Staff Quality Control: ISGS Staff
Native_Data_Set_Environment: ArcSDE 9.1 on Oracle 10g
Cross_Reference:
Citation_Information:
Title: ISGS Terms of Use
Online_Linkage: <http://www.isgs.illinois.edu>
Cross_Reference:
Citation_Information:
Title: University of Illinois Web Privacy Notice
Online_Linkage: <http://www.vpaa.uillinois.edu/policies/web_privacy.cfm>
Cross_Reference:
Citation_Information:
Title:
University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4)
Online_Linkage: <http://www.uillinois.edu/trustees/rules.cfm#sec34>
Cross_Reference:
Citation_Information:
Title:
Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign
Online_Linkage: <http://www.fs.uiuc.edu/cam/CAM/viii/viii-1.1.html>

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The line feature class has no user defined attributes. Otherwise, no report.
Logical_Consistency_Report:
No logical consistency review has been performed in recent memory. Otherwise, no report.
Completeness_Report: No report.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: No report.
Lineage:
Process_Step:
Process_Description: The data history is unknown.
Process_Date: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Process_Step:
Process_Description:
The source coverage data for the feature classes were reprojected from the customary ISGS Lambert projection, NAD27 to geographic coordinates, NAD83, double-precision. The line features were imported into the ISGS SDE enterprise database, following steps outlined in ISGS procedure GISDB_0009.

The source coverage was st_latlon.

The annotation feature class was imported into SDE from the source coverage using the method in an article entitled Converting Annotation from Coverage to Geodatabase Format (Colin Childs, ArcUser Magazine, October-December 2001, pp. 22-23) and the companion tutorial (referenced in the article.)

Prior to using the steps in the tutorial, a TAT coverage file had to be generated for the coverage. This was done in ArcInfo Workstation 7.2.1 with the following commands.

Arc: copyfeatures st_latlon anno st_latlon anno.anno Arc: build st_latlon annotation.anno

Process_Date: 20040312
Process_Contact:
Contact_Information:
Contact_Person_Primary:

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 46
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 20

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GISDB.IL_CARTO_Lon_Lat_Grid_500K_Ln
Detailed_Description:
Entity_Type:
Entity_Type_Label: GISDB.IL_CARTO_Lon_Lat_Grid_500K_An
Overview_Description:
Entity_and_Attribute_Overview:
There are no user-defined line attributes. The associated annotation feature class provides lon/lat values for the line features.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Information Office, Illinois State Geological Survey (ISGS), a division of the Institute of Natural Resource Sustainability (INRS) of the University of Illinois
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Electronic_Mail_Address: isgs@isgs.illinois.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
Distribution_Liability:
Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following:

Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law

By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained.

Technical_Prerequisites:
The data are intended for use with GIS software. The ISGS uses ESRI ArcGIS software, however, ESRI formats can be imported into many different GIS software packages. It is expected that customers who obtain these data have the technical expertise to use GIS software. The ISGS does not provide software support of any kind.

Metadata_Reference_Information:
Metadata_Date: 20090224
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Instructions: Please refer to the Distribution Information section.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints:
The access constraints as stated for the data apply also to the metadata. Refer to the Access Constraints section of the Identification Information section.
Metadata_Use_Constraints:
The use constraints as stated for the data apply also to the metadata. Refer to the Use Constraints section of the Identification Information section.
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Illinois Natural Resources Geospatial Data Clearinghouse

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