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Service Description: 2013 Orthophoto - Orthoimagery data produced for the District of Columbia from fall, leaf off, 2013 digital aerial photography flown on November 2013. The development of 2013 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 2013 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 (mg4) 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 2013

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All Layers and Tables

Layers:

• Ortho 2013 (0)

Description: Ortho 2013 Map Service Provided by DC GIS

Copyright Text: DC GIS

Spatial Reference: 26985  (26985)


Single Fused Map Cache: true

Tile Info:

• Height: 512
• Width: 512
• DPI: 120
• Levels of Detail: 11
  • Level ID: 0 [ Start Tile, End Tile ]
  • Resolution: 63.50012700025401
  • Scale: 300000
  • Level ID: 1 [ Start Tile, End Tile ]
  • Resolution: 42.33341800016934
  • Scale: 200000
  • Level ID: 2 [ Start Tile, End Tile ]
  • Resolution: 21.16670900008467
  • Scale: 100000
  • Level ID: 3 [ Start Tile, End Tile ]
  • Resolution: 10.583354500042335
  • Scale: 50000
  • Level ID: 4 [ Start Tile, End Tile ]
  • Resolution: 5.291677250021167
  • Scale: 25000
  • Level ID: 5 [ Start Tile, End Tile ]
  • Resolution: 2.54000508001016
  • Scale: 12000
  • Level ID: 6 [ Start Tile, End Tile ]
  • Resolution: 1.27000254000508
  • Scale: 6000
  • Level ID: 7 [ Start Tile, End Tile ]
  • Resolution: 0.63500127000254
  • Scale: 3000
  • Level ID: 8 [ Start Tile, End Tile ]
  • Resolution: 0.31750063500127
  • Scale: 1500
  • Level ID: 9 [ Start Tile, End Tile ]
  • Resolution: 0.21166709000084669
  • Scale: 1000
  • Level ID: 10 [ Start Tile, End Tile ]
  • Resolution: 0.10583354500042334
  • Scale: 500
• Format: MIXED
• Compression Quality: 75.0
• Origin: X: 379605.402
  Y: 148256.304
  
• Spatial Reference: 26985  (26985)
  

Storage Info:

• Storage Format: esriMapCacheStorageModeCompactV2
• Packet Size: 128

Initial Extent:

XMin: 372410.9716529855
YMin: 117422.29385636689
XMax: 425589.0283470143
YMax: 154977.7061436331
Spatial Reference: 26985  (26985)

Full Extent:

XMin: 389400
YMin: 124200
XMax: 408600
YMax: 148200
Spatial Reference: 26985  (26985)

Units: esriMeters

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

Document Info:

Title: Ortho 2013
Author:
Comments: Ortho 2013 Map Service Provided by DC GIS
Subject: Map Service for Ortho 2013
Category:
Keywords: aerial photography,orthophoto,planimetrics,District of Columbia
AntialiasingMode: None
TextAntialiasingMode: Force

Supports Dynamic Layers: false

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 300000

Max Scale: 500

Supports Datum Transformation: true



Child Resources:   Info

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