Loudoun County, Virginia, Office of Mapping and Geographic Information (OMAGI)
05Feb09
Planar Index of Loudoun County, VA (2009)
vector digital data
Leesburg, VA
Loudoun County, VA
withheld
GISDBB.GISBROW.PLANAR_POLY
The index coverage contains approximately 690 polygons which coincide with Loudoun County's GIS library tile system. Digital Data orders and associated maps are available to the extent of any individual tile as well as county wide. Each tile is designated with a unique ID number that is used in GIS data orders to identify the area of interest.
This data set is used primarily for locator reference and establishes the first 3 digits in the MCPI number for parcels. This information can also be known as Map, Sheet, or Tile number in other data sets.
Data are stored in the corporate ArcSDE Geodatabase as a polygon feature class. The coordinate system is Virginia State Plane (North), Zone 4501, datum NAD83 HARN (vertical datum, if applicable, NAVD88), US Survey foot units.
en
Feb. 2009
publication date
None planned
-77.980084
-77.319111
39.329627
38.841707
11630992.000000
11816992.000000
6991717.000000
7167717.000000
ESRI ArcIMS Topic Categories
location
none
Planar
Index
Map
Sheet
Tile number
none
Virginia
Loudoun
County
none
Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user.
These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.
Loudoun County, VA, OMAGI
Public Information Counter
mailing and physical address
1 Harrison Street SE, 2nd Floor
MS 65
Leesburg
VA
20175
USA
(703)771-5778
(703)771-5075
mapping@loudoun.gov
8:00-4:30 EST, M-F
Public Information
ESRI ArcCatalog 9.3.1.4000
Feature Class
Retention of attribute accuracy throughout the coverage to geodatabase feature class coversion process was ensured by a QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have, on a record by record basis, identical attribution when comparing all concatenated fields to all the user-defined attribution.
Topologically clean
Features may have been eliminated or generalized due to scale and intended use. To assist Loudoun County, Virginia in the maintenance of the data, please provide any information concerning discovered errors, omissions, or other discrepancies found in the data.
Retention of coordinate accuracy throughout the coverage to geodatabase feature class conversion process was ensured by a QA/QC programmatic check. To meet satisfactory QA/QC requirements the input coverage and output feature class must have the same record total, and on a record by record basis, area, perimeter, and length differential of less than +/- 0.5%.
Loudoun County, OMAGI
2007
vector digital data
2007
publication date
6000 by 4000 feet tile boundaries created for the entire extent of Loudoun County at predetermined even coordinates.
Loudoun County, VA, OMAGI
GIS Analyst
This data set was part of a batch process that converted legacy data from ArcInfo coverage in Librarian to a single-tiled ArcInfo coverage in preparation for a final coversion to ArcSDE Geodatabase Feature Classes. Data were extracted from Librarian using the EXTRACT TOPOLOGICAL command.
Multi-tiled data sets were extracted into multiple coverages and then combined based on the feature type(s). Layers with both polygon and arc feature classes were processed with the Arc commands, MAPJOIN and DISSOLVE. Arc feature classes alone were processed with the Arc commands, APPEND and DISSOLVE. Layers with both arc and point feature classes and point feature classes alone were processed with the Arc command, APPEND. When used, the Arc command, DISSOLVE, was given with the <#all> option.
All coverages were then reprojected to HARN 83 using the following .prj file specifications: INPUT
PROJECTION STATEPLANE
UNITS FEET
ZONE 5551
DATUM NAD27 NADCON
PARAMETERS
OUTPUT
PROJECTION STATEPLANE
UNITS FEET
FIPSZONE 4501
DATUM HPGN NADCON
PARAMETERS END
This dataset was then converted to a feature class in a geodatabase in ArcSDE.
2004
Loudoun County, VA, OMAGI
GIS Systems Analyst
New attribute called PL_QUAD added to feature class to identify the Loudoun County Quadrant that each tile is located in.
Feb. 2007
Loudoun County, VA, OMAGI
GIS Analyst
Loudoun County
Vector
Simple
FALSE
0
TRUE
FALSE
coordinate pair
0.000208
0.000208
survey feet
D_North_American_1983_HARN
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983_HARN
NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet
Explicit elevation coordinates do not apply to this layer
0.250000
Not Applicable
Not Applicable
PLANAR_POLY
polygon feature class
ESRI
Feature Class
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
SHAPE
Geometry
0
0
0
PL_PLANAR_ID
Internal number used for identification
Loudoun County
Positive real numbers that are automatically generated.
PL_PLANAR_ID
Integer
4
0
0
PL_PMAP
PCT Map number
Loudoun County
0 - 701 number designation based on State Plane Coordinate System Grid
PL_PMAP
String
5
0
0
PL_BMAP
Block Map number
Loudoun County
A to Z letter designation based on State Plane Coordinate System Grid
PL_BMAP
String
3
0
0
PL_SHEET
Sheet Map number
Loudoun County
0 - 701 number designation based on State Plane Coordinate System Grid
PL_SHEET
SmallInteger
2
0
0
PL_TILE
Tile number
Loudoun County
0 - 701 number designation based on State Plane Coordinate System Grid
PL_TILE
String
3
0
0
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
0
0
PL_QUAD
Two letter designation that identifies which Quad based area the tile is located
Loudoun County
NE
Northeast
NW
Northwest
SE
Southeast
SW
Southwest
PL_QUAD
String
2
0
0
SHAPE_Length
SHAPE_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
SHAPE_Area
SHAPE_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
Loudoun County, VA, OMAGI
Public Information Counter
mailing and physical address
1 Harrison Street SE, 2nd Floor
MS 65
Leesburg
VA
20175
USA
(703)771-5778
(703)771-5075
mapping@loudoun.gov
8:00-4:30 EST, M-F
Offline Data
Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user.
GDB
ESRI Personal Geodatabase Feature Class
DVD
SHP
ESRI Shapefile
DVD
DXF
AutoCad Digital Exchange File
DVD
Loudoun County distributes spatial data in ArcGIS database or shapefile & DXF format for the cost of reproduction. Countywide spatial datasets may be purchased for $22 per DVD for up to 4.5 GB of data. There is a $100 surcharge to purchase countywide topography, and a $3 charge if the item is to be mailed. If the customer wants the data in DXF format and/or would like OMAGI to custom select specific geographic areas of the County, there is an additional $7 per 15 minute increment labor charge. Select aerial imagery is also available.
Size limit: 4.5 GB. Visit our website at: http://www.loudoun.gov/omagi, click on "Loudoun County Mapping Documents & Order Forms." The "Forms" directory will lead you to custom & standard (countywide) data order forms.
Hardcopy maps may also be available; please contact the Mapping Office Public Information Counter for more information regarding all data requests.
20111020
mailing and physical address
1 Harrison Street SE, 2nd Floor
Leesburg
VA
20175
USA
MS 65
(703)771-5778
(703)771-5075
mapping@loudoun.gov
8:00-4:30 EST, M-F
Loudoun County, VA, OMAGI
Metadata Specialist
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
This metadata reflects the source Geodatabase format and specific elements may not apply if your data is exported to SHP or DXF products. User must be aware that changes to data schema occur during data export that may not be reflected in this metadata, which represents Loudoun County's corporate geodatabase. Acknowledgement of Loudoun County would be appreciated in the use of this metadata.
en
20141013
15450000
FALSE
20191118
10382100
20191118
10382100
PLANAR_POLY
002
11630992.000000
11816992.000000
6991717.000000
7167717.000000
1
Projected
GCS_North_American_1983_HARN
NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.7'><WKT>PROJCS["NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",11482916.66666666],PARAMETER["False_Northing",6561666.666666666],PARAMETER["Central_Meridian",-78.5],PARAMETER["Standard_Parallel_1",38.03333333333333],PARAMETER["Standard_Parallel_2",39.2],PARAMETER["Latitude_Of_Origin",37.66666666666666],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2924]]</WKT><XOrigin>-110512499.99999979</XOrigin><YOrigin>-88857999.999999836</YOrigin><XYScale>4800.0000000000082</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0033333333333333275</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2924</WKID><LatestWKID>2924</LatestWKID></ProjectedCoordinateSystem>
Linear Unit: Foot_US (0.304801)
Published
FGDC
1.0
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595
Planar Index of Loudoun County, VA (2009)
vector digital data
-77.980084
-77.319111
39.329627
38.841707
1
11630992
11816992
7167717
6991717
1
-77.980084
-77.319111
39.329627
38.841707
1
002
002
This data set is used primarily for locator reference and establishes the first 3 digits in the MCPI number for parcels. This information can also be known as Map, Sheet, or Tile number in other data sets.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The index coverage contains approximately 690 polygons which coincide with Loudoun County's GIS library tile system. Digital Data orders and associated maps are available to the extent of any individual tile as well as county wide. Each tile is designated with a unique ID number that is used in GIS data orders to identify the area of interest.</SPAN></P></DIV></DIV></DIV>
location
Planar
Index
Map
Sheet
Tile number
Every reasonable effort has been made to assure the accuracy of these data. Loudoun County, Virginia does not assume any liability arising from the use of these data. These data are provided without warranty of any kind, expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular service. Reliance on these data is at the risk of the user.
These data were generated for use by Loudoun County and are available to the public. These data are intended for use at 1:2400 scale or smaller. Acknowledgement of Loudoun County would be appreciated in products derived from this data.
ArcGIS Metadata
1.0
dataset
002
withheld
Feature Class
File Geodatabase Feature Class
NAD_1983_HARN_StatePlane_Virginia_North_FIPS_4501_Feet
EPSG
8.9.3(9.0.0)
0
20191118
{24DA48BB-2CF0-4829-B862-05E877DF67F2}