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Service Description: 2010 Orthophoto - Orthoimagery data produced for the District of Columbia from spring, leaf off, 2010 digital aerial photography flown on April 2 and 3, 2010. The development of 2010 orthophoto imagery is a component of an overall project commissioned by the District of Columbia to conduct a comprehensive photogrammetric mapping and GIS update of its imagery and planimetric GIS data layers. The project area for the 2010 project covers the entire District of Columbia and immediate surrounding area equaling approximately 80 square miles. The multispectral digital imagery was used to create natural color digital orthophotography with 16cm pixel resolution. The final orthophotography deliverable products for this project consist of 328 ortho tiles in GeoTIFF format at a design scale of 1:1200 meeting an ASPRS Class 1 horizontal accuracy of 1 foot RMSExy. The ortho tile dimensions are 800 meters by 800 meters. A single corresponding MrSid image (mg3) was created by mosaicking the 328 ortho tiles together and compressing the image using an 80 to 1 compression ratio. All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

Map Name: Ortho 2011 - Web Mercator

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All Layers and Tables

Layers:

• Ortho2011.sid (0)
• Ortho2010.sid (1)

Description: Ortho 2011 Hybrid Map Service provided by DC GIS, flown on December 28 and 29 of 2011

Copyright Text: Pictometry Inc.

Spatial Reference: 102100  (3857)


Single Fused Map Cache: true

Tile Info:

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• Width: 256
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• Format: MIXED
• Compression Quality: 75.0
• Origin: X: -2.0037508342787E7
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• Spatial Reference: 102100  (3857)
  

Storage Info:

• Storage Format: esriMapCacheStorageModeCompactV2
• Packet Size: 128

Initial Extent:

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YMin: 4687793.60757204
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Spatial Reference: 102100  (3857)

Full Extent:

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Spatial Reference: 102100  (3857)

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Ortho 2011 - Web Mercator
Author:
Comments: Ortho 2011 Hybrid Map Service provided by DC GIS, flown on December 28 and 29 of 2011
Subject: Map Service for Ortho 2011 - Web Mercator
Category:
Keywords: aerial photography,orthophoto,planimetrics,District of Columbia
AntialiasingMode: None
TextAntialiasingMode: Force

Supports Dynamic Layers: false

MaxRecordCount: 1000

MaxImageHeight: 2048

MaxImageWidth: 2048

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 5.91657527591555E8

Max Scale: 1128.497176

Supports Datum Transformation: true



Child Resources:   Info

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