Composite Image Service WMS, Minnesota

This page last updated: 06/03/2011
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Minnesota Geospatial Information Office
Abstract The goal of the Composite Image Service is to provide a single layer image service with the 'best' air photo or satellite image available for a certain extent. The images are provided as a WMS (web map service). The primary focus is the Twin Cities Metropolitan Area and the State of Minnesota. The secondary interest is the areas bordering Minnesota, especially Wisconsin counties close to the metro area.

Imagery is evaluated based on criteria of color, currency, resolution, coverage, season, leaf cover and image quality in order to determine which imagery to include at which scale. See the Lineage field for a list of imagery layers that are visible at different scales.
Browse Graphic none available
Time Period of Content Date 2010
Currentness Reference The dates of each imagery layer are listed in the Lineage field.

This service will be updated annually as new or improved image datasets become available. These new image layers will wholly or partially replace image layers in the service.
Access Constraints None.
Use Constraints In obtaining this service from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you use the service to transmit or provide data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.
Distributor Organization Minnesota Geospatial Information Office
Ordering Instructions You can use a WMS with free software such as Google Earth and ArcGIS Explorer, and with many different GIS software packages.

The url for users to paste into their software, or for developers to access the WMS service is:

http://geoint.lmic.state.mn.us/cgi-bin/mncomp?

[Note: You cannot just click on the url to see the imagery. For help with using WMS services, see: http://www.mngeo.state.mn.us/chouse/wms/how_to_use_wms.html ]
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Full Metadata

Composite Image Service WMS, Minnesota

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

 
Section 1 Identification Information   Top of page
Originator Minnesota Geospatial Information Office
Title Composite Image Service WMS, Minnesota
Abstract The goal of the Composite Image Service is to provide a single layer image service with the 'best' air photo or satellite image available for a certain extent. The images are provided as a WMS (web map service). The primary focus is the Twin Cities Metropolitan Area and the State of Minnesota. The secondary interest is the areas bordering Minnesota, especially Wisconsin counties close to the metro area.

Imagery is evaluated based on criteria of color, currency, resolution, coverage, season, leaf cover and image quality in order to determine which imagery to include at which scale. See the Lineage field for a list of imagery layers that are visible at different scales.
Purpose This image service is intended only to be a backdrop or reference layer and is not intended for any specific image analysis purposes.
Time Period of Content Date 2010
Currentness Reference The dates of each imagery layer are listed in the Lineage field.

This service will be updated annually as new or improved image datasets become available. These new image layers will wholly or partially replace image layers in the service.
Progress Complete
Maintenance and Update Frequency Annually
Spatial Extent of Data 1. Small-scale: Landsat extends 100-200 miles into adjoining states and Canada. 2. Medium-scale: Minnesota and the western Wisconsin counties listed in the Lineage field. 3. Large-scale: Areas in the Twin Cities described in the Lineage field.
Bounding Coordinates -101.2
-86.8
51.3
40.8
Place Keywords Minnesota
Theme Keywords imageryBaseMapsEarthCover, Digital Orthorectified Image, Digital Orthophoto Quad, Ortho, Orthophoto, DOQ, NAIP, Compliance, Air Photo, Air Photography, Aerial Photo, Aerial Photography
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None.
Use Constraints In obtaining this service from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you use the service to transmit or provide data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.
Contact Person Information Pete Olson, Systems Programmer
Minnesota Geospatial Information Office
658 Cedar Street, Room 300
St. Paul, MN 55155
Phone: 651-201-2467
FAX: 651-296-3698
E-mail: clearing.house@state.mn.us
Browse Graphic none available
Browse Graphic File Description
Associated Data Sets For information on other air photos available for Minnesota, see http://www.mngeo.state.mn.us/chouse/airphoto/index.html

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy See documentation for each image layer. Links to the documentation are provided in the Lineage field.
Logical Consistency
Completeness All of Minnesota is covered by at least two different layers at different scales. Some layers cover smaller geographic extents.
Horizontal Positional Accuracy See documentation for each image layer. Links to the documentation are provided in the Lineage field.
Lineage Criteria for Selecting the Imagery to Include in the Service

The Composite Image Service Workgroup evaluated candidate imagery on a number of factors including color, currency, resolution, coverage, season, leaf cover and image quality in order to determine which imagery to include at which scale. No quality is definitively more important than another, and different qualities may have different priorities at different scales.

The workgroup selected true-color Landsat scenes for small scales (state- and region-wide) and the most recent Farm Service Agency NAIP imagery for medium scales. The NAIP imagery also serves as the 'default' large-scale background in areas that do not have higher resolution imagery available. Beyond that, the workgroup discussed a long list of imagery concerns and agreed that decisions about large scale, high-resolution imagery choices would primarily come down to balancing three: currentness, resolution, and accuracy.

Some additional guidelines used:

- True color imagery is preferred.
- Recent imagery is preferred to older imagery.
- Imagery acquired during the winter months is not preferred.
- Leaf-off is acceptable at large scales.
- Lower resolution is preferred at smaller scales.
- Higher resolution is preferred at larger scales.
- Datasets with larger coverage areas are preferred to patchy coverages.
- Image quality is subjective; images may meet or exceed technical specifications of other imagery but still be rejected based on image quality.


Layers that are Displayed at Different Scales and Links to Source Imagery Documentation:

For each of these, the layers higher in the list will show through in areas not covered by layers further down. For example, Landsat will continue to be displayed across bordering states where the FSA 2010 data does not exist.

1:250,000-scale and above
- 1999-2002 Landsat: http://landsat.usgs.gov

1:250,000 - 1:10,000 scale
- 2010 Farm Service Agency NAIP for Minnesota: http://www.mngeo.state.mn.us/chouse/airphoto/naip10.html
- 2008 FSA NAIP for the following western Wisconsin counties: Douglas, Washburn, Polk, Barron, Dunn, St. Croix, Eau Claire, Pierce, Pepin, Jackson, Trempealeau, Buffalo, Monroe, La Crosse, Vernon, Richland, Crawford and Grant.

1:10,000 - 1:3,000 scale
- 2010 natural color leaf-off imagery for 11 counties in the Twin Cities metro area ( Anoka, Carver, Chisago, Dakota, Hennepin, Isanti, Ramsey, Scott, Sherburne, Washington and Wright): http://www.mngeo.state.mn.us/chouse/airphoto/ecmn10.html

<1:3,000-scale
- 2006 NGA (National Geospatial-Intelligence Agency) over downtown St. Paul; this was used since there was excessive building lean in the 2010 leaf-off imagery: http://extract.cr.usgs.gov/distmeta/servlet/gov.usgs.edc.MetaBuilder?TYPE=HTML&DATASET=UA_292_03
Source Scale Denominator
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment
Geographic Reference for Tabular Data
Spatial Object Type Raster
Vendor Specific Object Types Cell
Tiling Scheme
 
Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme UTM
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Meters
Distance Resolution
Altitude Datum Not applicable
Depth Datum Not applicable
UTM Zone Number 15
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview N/A
Entity and Attribute Detailed Citation
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Minnesota Geospatial Information Office
Publication Date 02/2011
Contact Person Information Nancy Rader
GIS Data Coordinator
Minnesota Geospatial Information Office
658 Cedar Street, Room 300
St. Paul, MN 55155
Phone: 651-201-2489
FAX: 651-296-3698
E-mail: clearing.house@state.mn.us
Distributor's Data Set Identifier
Distribution Liability DISTRIBUTION LIABILITY STATEMENT
For data or maps delivered online or by physical media by
the Minnesota Geospatial Information Office

Limitations: Although extensive effort has been made to produce error-free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. Users should consult available data documentation (metadata) for this particular data to determine limitations and the precision to which the data depict distance, direction, location or other geographic characteristics. Data may be subject to change without prior notification.

No warranty: Data is provided as is, without any warranty whatsoever, including but not limited to any warranty as to performance, merchantability or fitness for any particular purpose.

Liability: The entire risk as to the results of the use of this data is assumed by the user. MnGeo is not responsible for any interpretation or conclusions made by those who acquire or use it. MnGeo shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third-party claims resulting from the use of this data, even if MnGeo has been advised of the possibility of such potential loss or damage. In states that do not allow the exclusion or limitation of incidental or consequential damages, this data may not be used.

Redistribution conditions: In obtaining this service from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you use the service to transmit or provide data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.

Data delivered on electronic media: If data has been requested from MnGeo on magnetic media, CD or any other physical media, MnGeo will deliver it in the computer-readable format agreed upon with the requestor. MnGeo will reissue data if it is unreadable by correctly adjusted computer input devices or when the media is delivered in a damaged condition. Requests for reissue of this digital data product must be made within 30 days of the date shipped from MnGeo.
Transfer Format Name
Transfer Format Version Number
Transfer Size
Ordering Instructions You can use a WMS with free software such as Google Earth and ArcGIS Explorer, and with many different GIS software packages.

The url for users to paste into their software, or for developers to access the WMS service is:

http://geoint.lmic.state.mn.us/cgi-bin/mncomp?

[Note: You cannot just click on the url to see the imagery. For help with using WMS services, see: http://www.mngeo.state.mn.us/chouse/wms/how_to_use_wms.html ]
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.
 
Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date 06/03/2011
Contact Person Information Nancy Rader, GIS Data Coordinator
Minnesota Geospatial Information Office
658 Cedar Street, Room 300
St. Paul, MN 55155
Phone: 651-201-2489
FAX: 651-296-3698
E-mail: clearing.house@state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.gis.state.mn.us/stds/metadata.htm


This page last updated: 06/03/2011