SL_Ortho-Mosaic_1067_081904_1200-10x.sid

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?
    Title: SL_Ortho-Mosaic_1067_081904_1200-10x.sid
    Abstract:
    2004 Sherman Lake mosaiced aerial photographs (from 5 photos), ortho-rectified. 1200dpi, compressed 10x using MrSID software. 0.2 meter (0.67ft) pixel resolution

  1. How should this data set be cited?

    Hammon, Jensen & Wallen; Wetlands & Water Reso, Aug. 19 2004, SL_Ortho-Mosaic_1067_081904_1200-10x.sid: IRWM Pilot Project, funded by CBDA Science Program 1067, WWR, San Rafael, CA.

    Online Links:

    • \\VIVA\GIS\Projects\IRWM\Images\HJW\SL\year_2004\SL_Ortho-Mosaic_1067_081904_1200-10x.sid

    Other_Citation_Details:
    See <http://www.swampthing.org> or <http://www.irwm.org> for addtional information

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 606133.113
    East_Bounding_Coordinate: 601721.113
    North_Bounding_Coordinate: 4213729.035
    South_Bounding_Coordinate: 4210257.435

  3. What does it look like?

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

    Calendar_Date: Aug. 19 2004
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: remote-sensing image

  6. How does the data set represent geographic features?

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

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

      • G-polygon (94)
      • Point (4)
      • GT-polygon composed of chains (1)
      • Point (4)
      It contains the following raster data types:
      • Dimensions 17838 x 22997 x 1, type Pixel

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

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 0.200000
      Ordinates (y-coordinates) are specified to the nearest 0.200000

      The horizontal datum used is NAD83.
      The ellipsoid used is Geodetic Reference System 80.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:

  7. How does the data set describe geographic features?

    Band_1

    ObjectID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Value

    Whole numbers that are automatically generated.

    Count

    Whole numbers that are automatically generated.

    Positive real numbers that are automatically generated.

    Sequential unique whole numbers that are automatically generated.

    Band_2

    ObjectID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Value

    Count

    Band_3

    ObjectID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Value

    Count

Who produced the data set?

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

  2. Who also contributed to the data set?

    Produced by HJW, rectified and mosaiced by Jake Schweitzer, WWR for IRWM Pilot Project (funded by CA Bay Delta Authority [CBDA])

  3. To whom should users address questions about the data?

    Wetlands & Water Resources
    c/o Stuart W. Siegel
    President
    1010 B St, Suite 425
    San Rafael, CA 94901
    USA

    (415) 457-0250 (voice)
    (415) 457-0260 (FAX)
    [email protected]

    Hours_of_Service: 9am-5pm
    Contact_Instructions:
    www.wetlands-and-water-resources.com or www.swampthing.org

Why was the data set created?
Analyses for IRWM Pilot Project

How was the data set created?
  1. From what previous works were the data drawn?

    (source 1 of 1)
    HJW, Aug. 19 2004, HJW:,.

    Online Links:

    Type_of_Source_Media: Color Infrared Digital Aerial Photo
    Source_Scale_Denominator: 9,600 (photo scale)
    Source_Contribution: HJW, Jake Schweitzer (WWR)

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

    Date: Oct. 2004 (process 1 of 7)
    Photos scanned at 1,200 DPI Ortho-rectified using GPS ground control target points Mosaiced from 5 individual photos using MrSID Compressed x10 using MrSID

    Person who carried out this activity:

    Jake Schweitzer
    WWR
    GIS Specialist
    1010 B St., Suite 425
    San Rafael, CA 94901
    USA

    (415) 457-0250 (voice)
    [email protected]

    Contact_Instructions: For information on original data, contact Peter Ashley, HJW
    (process 2 of 7)
    Metadata imported.

    Data sources used in this process:

    • C:\Temp\xml1FF.tmp

    (process 3 of 7)
    Metadata imported.

    Data sources used in this process:

    • C:\Temp\xml1BD2.tmp

    (process 4 of 7)
    Metadata imported.

    Data sources used in this process:

    • C:\Temp\xml11E2.tmp

    (process 5 of 7)
    Metadata imported.

    Data sources used in this process:

    • C:\Temp\xml6A2.tmp

    (process 6 of 7)
    Metadata imported.

    Data sources used in this process:

    • C:\Temp\xml1484.tmp

    (process 7 of 7)
    Metadata imported.

    Data sources used in this process:

    • G:\GIS\Projects\IRWM\Images\HJW\SL\SL_Ortho-Mosaic_1067_102403_1200-10x.sid.xml

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    N/A

  2. How accurate are the geographic locations?

    Each corner control point is within 1-2 meters of ground control point, which was set using sub-meter GeoXT GPS unit. For more detailed information, see files in "Rectification Parameters" folder, or contact Wetlands and Water Resources.

  3. How accurate are the heights or depths?

    N/A

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

    Complete as needed

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: Public Data
Use_Constraints:
Credit to Wetlands and Water Resources (WWR) and IRWM Pilot Project, funded by CA Bay Delta Authority (CBDA) Science Program

  1. Who distributes the data set? (Distributor 1 of 1)

    San Francisco Estuary Institute
    7770 Pardee Lane, 2nd Flr
    Oakland, CA 94621
    USA

    (510) 746-7334 (voice)

    Hours_of_Service: 9am to 5pm
    Contact_Instructions:
    Visit <http://www.irwm.org> on the Internet

    For additional questions/information, visit <http://www.swampthing.org>

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

    MrSID Image

  3. What legal disclaimers am I supposed to read?

    Must credit WWR and CBDA

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    Photo digital images are provided at multitude of size/resolution

Who wrote the metadata?
Dates:
Last modified: 15-Oct-2004

Metadata author:
Wetlands and Water Resources
c/o Jake H. Schweitzer
GIS Specialist
1010 B St, Suite 425
San Rafael, CA 94901
USA

(415) 457-0250 (voice)
[email protected]

Hours_of_Service: 9am - 5pm
Contact_Instructions:
www.wetlands-and-water-resources.com or www.swampthing.org
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.3 on Fri Oct 15 17:23:51 2004