Index of tiles for: Des Plaines Watershed, IL/WI - TerraSource Orthorectified Imagery

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   ImageAmerica, 20001002, Index of tiles for: Des Plaines Watershed, IL/WI - TerraSource Orthorectified Imagery: ISGS GIS Database /imagetiles1ft.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -088.17

   East_Bounding_Coordinate: -087.75

   North_Bounding_Coordinate: 42.75

   South_Bounding_Coordinate: 41.80

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 25-Mar-2000

   Ending_Date: 26-Mar-2000

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: map

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Point (339)
      • String (714)
      • GT-polygon composed of chains (340)

   2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: State Plane Coordinate System 1983

      State_Plane_Coordinate_System:

      SPCS_Zone_Identifier: 3776

      Transverse_Mercator:

      Scale_Factor_at_Central_Meridian: .999975

      Longitude_of_Central_Meridian: -88.3333333334

      Latitude_of_Projection_Origin: 36.6666666667

      False_Easting: 984249.998999999

      False_Northing: 0.0

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 1
      Ordinates (y-coordinates) are specified to the nearest 1
      Planar coordinates are specified in feet

      The horizontal datum used is North American Datum 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.
      

7. How does the data set describe geographic features?

   Entity_and_Attribute_Overview:

   Attributes are in typical Arc/Info feature class format. Those requiring further explanation are:

    NAME - tile name in State Plane coordinates
    RESOLUTION - resolution in feet of associated photo
    LEFT, RIGHT, TOP, BOTTOM - bounding coordinates of photos
   IMAGETILES1FT.PAT:
   COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC
       1  AREA                   4    12     F      3
       5  PERIMETER              4    12     F      3
       9  IMAGETILES1FT#         4     5     B      -
      13  IMAGETILES1FT-ID       4     5     B      -
      17  NAME                  40    40     C      -
      57  RESOLUTION             4    12     F      3
      61  LEFT                   4    12     F      3
      65  RIGHT                  4    12     F      3
      69  BOTTOM                 4    12     F      3
      73  TOP                    4    12     F      3
   
   

   Entity_and_Attribute_Detail_Citation: none

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • ImageAmerica

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   Kallen Bailey
   ImageAmerica
   18445 Edison Ave.
   Chesterfield, MO 63005
   USA
   

   636-530-1901 (voice)
   unknown (FAX)
   kbailey@image-america.com
   

Why was the data set created?

Spatial index for associated photographs.

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

3. What similar or related data should the user be aware of?

   ImageAmerica, 20001002, Des Plaines Watershed, IL/WI - TerraSource Orthorectified Imagery: ISGS GIS Database /<filename>.

How reliable are the data; what problems remain in the data set?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

None. Acknowledgement of ImageAmerica would be appreciated in products derived from these data.

1. Who distributes the data set? (Distributor 1 of 1)
   Illinois State Geological Survey
   Information Office
   615 East Peabody Drive
   Champaign, Illinois 61820
   USA
   

   217-333-4747 (voice)
   217-244-0802 (FAX)
   isgs@isgs.uiuc.edu
   

   Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

2. What's the catalog number I need to order this data set?

3. What legal disclaimers am I supposed to read?

   The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.

   In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR.

4. How can I download or order the data?

Who wrote the metadata?

Dates:

Last modified: 02-Apr-2001

Metadata author:

Illinois State Geological Survey
Information Office
615 East Peabody Drive
Champaign, Illinois 61820
USA

217-333-4747 (voice)
217-244-0802 (FAX)
isgs@isgs.uiuc.edu

Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Illinois Natural Resources Geospatial Data Clearinghouse