orthophoto project ground control locations

Data format: Unknown

File or table name: ortho_grndcntrl_02

Coordinate system: Lambert Conformal Conic

Theme keywords: planningCadastre, imageryBaseMapsEarthCover, Geodetic control points, Ground control points, points

Abstract: Ground control locations used for the aerial photos. Identifiable points on the ground (ground control points) are used to determine distances and geometric properties of the image. The photos were captured April 22 & 23, 2002.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: Towill Inc.


Title:
orthophoto project ground control locations
*File or table name: ortho_grndcntrl_02


Publication date: 20030620
*Geospatial data presentation form: vector digital data


Online linkage: http://gis.napa.ca.gov/giscatalog/catalog.asp


Description:
Abstract:
Ground control locations used for the aerial photos.  Identifiable points on the ground (ground control points) are used to determine distances and geometric properties of the image.
The photos were captured April 22 & 23, 2002.

Purpose:
Created for the purpose of providing an accurate network of NAD83 coordinate positions for densification of the geodetic control network and for the dimensional control of the photogrammetric mapping for the land base of Napa County. Used for locating known survey points in the field.

Supplemental information:
Provided by Towill, Inc. as part of the 2002 Orthophoto Project.

*Language of dataset: en


Time period of content:
Time period information:
Multiple dates/times:
Single date/time:
Calendar date: 20020422
Single date/time:
Calendar date: 20020423

Currentness reference:
ground condition

Status:
Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -122.672341
*East bounding coordinate: -122.027355
*North bounding coordinate: 38.889518
*South bounding coordinate: 38.115537

Local bounding coordinates:
*Left bounding coordinate: 6370297.860000
*Right bounding coordinate: 6553796.080000
*Top bounding coordinate: 2085768.010000
*Bottom bounding coordinate: 1804596.440000

Keywords:
Theme:
Theme keywords: planningCadastre, imageryBaseMapsEarthCover
Theme keyword thesaurus: ISO 19115 Topic Category

Theme:
Theme keywords: Geodetic control points, Ground control points, points
Theme keyword thesaurus: none

Place:
Place keywords: Napa County, California, Napa
Place keyword thesaurus: none

Access constraints: Access to this data is limited to County of Napa and partner agencies only.
Use constraints:
Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information.  Although every reasonable effort has been made to assure the accuracy of this data, the County of Napa makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The County of Napa assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.

Point of contact:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way, Suite 201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



Native dataset format: Unknown
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.6.1500


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Data Quality Information:


Logical consistency report:
Not applicable

Completeness report:
These ground control points are for the entire County of Napa. Photo Control Survey was used to establish the ground ties to the aerial photography. The Survey methods used  provide aerial target locations within the specifications necessary to produce 1:2,400 mapping with 5 & 10 ft. contours.

Lineage:
Source information:
Source citation:
Citation information:
Originators: Towill, Inc


Title:
2002 orthophoto project


Publication date: Unpublished Material


Source scale denominator: Unknown
Type of source media: paper
Source citation abbreviation:
Towill, Inc
Source contribution:
Photo control survey and all data for the Orthophoto project provided by Towill, Inc

Source time period of content:
Time period information:
Multiple dates/times:
Single date/time:
Calendar date: 20020422
Single date/time:
Calendar date: 20020423

Source currentness reference:
ground condition

Process step:
Process description:
Projection definition corrected

Process date: 20040324


Process step:
Process description:
Dataset copied.

Process date: 20040324


Source used citation abbreviation:


Process step:
Process description:
Dataset copied.

Process date: 20110125
Process time: 15445000


Source used citation abbreviation:
server=gisdata_test; service=sde:sqlserver:gisdata_test; database=maingis; user=gis; version=sde.default


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Spatial Data Organization Information:


*Direct spatial Rreference method: Vector


Point and vector object information:
SDTS terms description:
*Name: ortho_grndcntrl_02
*SDTS point and vector object type: Entity point
*Point and vector object count: 30

ESRI terms description:
*Name: ortho_grndcntrl_02
*ESRI feature type: Simple
*ESRI feature geometry: Point
*ESRI topology: FALSE
*ESRI feature count: 30
*Spatial index: TRUE
*Linear referencing: FALSE


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Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_StatePlane_California_II_FIPS_0402_Feet
*Geographic coordinate system name: GCS_North_American_1983

Planar:
Map projection:
*Map projection name: Lambert Conformal Conic
Lambert conformal conic:
*Standard parallel: 38.333333
*Standard parallel: 39.833333
*Longitude of central meridian: -122.000000
*Latitude of projection origin: 37.666667
*False easting: 6561666.666667
*False northing: 1640416.666667

Planar coordinate information:
*Planar coordinate encoding method: coordinate pair
Coordinate representation:
*Abscissa resolution: 0.000625
*Ordinate resolution: 0.000625
*Planar distance units: survey feet

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:
*Altitude resolution: 1.000000
*Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

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Entity and Attribute Information:


Detailed description:
*Name: ortho_grndcntrl_02


Entity type:
Entity type label: ortho_grndcntrl_02
*Entity type type: Feature Class
*Entity type count: 30
Entity type definition:
Orthophoto Project Ground Control Locations
Entity type definition source:
Dataset developer

Attribute:
*Attribute label: OBJECTID
*Attribute alias: OBJECTID
*Attribute definition:
Internal feature number.
*Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 10
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
*Attribute label: PICT_PT_ID
*Attribute alias: PICT_PT_ID


*Attribute type: String
*Attribute width: 15
*Attribute precision: 0
*Attribute scale: 0


Attribute:
*Attribute label: CNTRL_TYPE
*Attribute alias: CNTRL_TYPE


*Attribute type: String
*Attribute width: 15
*Attribute precision: 0
*Attribute scale: 0


Attribute:
*Attribute label: SHAPE
*Attribute alias: Shape
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


Attribute:
*Attribute label: pict_pt_id
*Attribute alias: pict_pt_id
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: String
*Attribute width: 15
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


Attribute:
*Attribute label: cntrl_type
*Attribute alias: cntrl_type
Attribute definition:
Type of control point

*Attribute type: String
*Attribute width: 15
*Attribute precision: 0
*Attribute scale: 0


Attribute:
*Attribute label: Shape
*Attribute alias: Shape
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


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Distribution Information:


Distributor:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way #201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



Resource description: access to this data is limited to county of napa and partner agencies only.


Distribution liability:
Disclaimer: This GIS data is intended to provide a visual display of data for the user's convenience. Users of this data are hereby notified that the appropriate public primary information sources should be consulted for verification of the information.  Although every reasonable effort has been made to assure the accuracy of this data, the County of Napa makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the data provided herein and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. The County of Napa assumes no liability for any errors, omissions, or inaccuracies in the information provided regardless of how caused and assumes no liability for any decisions made or actions taken or not taken by the user of the data in reliance upon any information or data furnished hereunder. Because the GIS data provided is not warranted to be up-to-date, the user should check with the County staff for updated information.

Standard order process:
Ordering instructions:
Access to this data is limited to County of Napa and partner agencies only.


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Metadata Reference Information:


*Metadata date: 20090223
Metadata review date: 20040728


*Language of metadata: en


Metadata contact:
Contact information:
Contact organization primary:
Contact organization: County of Napa ITS Department
Contact position: GIS Coordinator


Contact address:
Address type: mailing and physical address
Address:
650 Imperial Way #201
City: Napa
State or province: CA
Postal code: 94559
Country: USA

Contact voice telephone: (707) 259-8141
Contact facsimile telephone: (707) 253-4824


Contact electronic mail address: gisstaff@co.napa.ca.us


Hours of service: M-F 8:00 am - 5:00 pm



*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time


Metadata extensions:
*Online linkage: http://www.esri.com/metadata/esriprof80.html
*Profile name: ESRI Metadata Profile

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Metadata stylesheets are provided courtesy of ESRI. Copyright (c) 2000-2002, Environmental Systems Research Institute, Inc. All rights reserved.