The Extras service is intended to provide a number of imagery base layer that do not fit well within the Best Data Available service. h4. It contains these main layers:
  1. Extras: DRG
  2. Extras: Pseudo Color Landsat
  3. Extras: Shaded Relief NED
  4. Extras: Landsat Pan

Extras: DRG

 This layer group provides four layers, "drg_24k", "drg_25k", "drg_63k", "drg_250k", which contain the USGS topographic maps for the scales 1:24,000, 1:25,000, 1:63,360, and 1:250,000 respectively. For more information please see the USGS's topographic maps website.

Extras: 1:24,000 DRGs
  • This layer is called “drg_25k” and provides the USGS Topographic Maps available at the 1:24,000 scale. The area covered by these maps is quite limited and mainly covers the Beechey Point area.
  • "":http://wms.alaskamapped.org/cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=202512.917982112,2276778.03281333,203842.070834421,2277831.3237529&WIDTH=636&HEIGHT=504&LAYERS=drg_24k&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE


Extras: 1:25,000 DRGs
  • This layer is called "drg_25k" and provides the USGS Topographic Maps available at the 1:25,000 scale.
  • "":http://wms.alaskamapped.org/cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=139193.903484811,1073454.47095822,141213.207523419,1075054.67415863&WIDTH=636&HEIGHT=502&LAYERS=drg_25k&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE


Extras: 1:63,360 DRGs
  • This layer is called “drg_63k” and provides the USGS Topographic Maps available at the 1:63,360 scale. The area covered by these maps is covers most of Alaska, with the exception of some areas in the "Aleutian Islands":http://en.wikipedia.org/wiki/Aleutian_Islands.
  • "":http://wms.alaskamapped.org//cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=139221.420206511,1072844.02307066,143529.268822209,1076257.7898982&WIDTH=636&HEIGHT=502&LAYERS=drg_250,drg_63k,drg_25k,drg_24k&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE

Extras: 1:250,000 DRGs
  • This layer is called “drg_250k” and provides the USGS Topographic Maps available at the 1:250,000 scale. These maps cover the entire state of Alaska.
  • "":http://wms.alaskamapped.org//cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=137980.289057582,1070139.9759959,146394.055885116,1076807.48933093&WIDTH=640&HEIGHT=500&LAYERS=drg_250&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE

Extras: Canadian Topographic Maps
  • This layer is called “can_drg_250k” and provides the “Natural Resources Canada”:http://www.nrcan-rncan.gc.ca/com/index-eng.php 1:250,000 scale topographic covering Canada. For more information, please see “Natural Resources Canada Mapping Services”:http://maps.nrcan.gc.ca/topo_e.php . This layer is intended to supplement the other DRG layers by providing topographic data for areas near Alaska that are not covered by the USGS maps.




Extras: Pseudo Color Landsat

 This group provides a single layer called "Mid Resolution Pseudo Color (15 meter)". This layer is derived from the the Landsat datasets provided by OnEarth.
  • "":http://wms.alaskamapped.org/cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=132704.327417529,1067384.62833765,148919.215975536,1080234.16266664&WIDTH=636&HEIGHT=504&LAYERS=pseudo_color_landsat&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE


Extras: Shaded Relief NED

 This group has one layer which provides a shaped relief dataset derived from the National Elevation Dataset (NED)
  • " ":http://wms.alaskamapped.org/cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=-1206091.75094832,962836.200348494,1301539.85627394,2392186.21646518&WIDTH=1000&HEIGHT=570&LAYERS=shaded_relief_ned&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE


Extras: Landsat Pan

 This layer group provides a single banded dataset derived from Landsat 7's pan-chromatic band. It was generated from the Landsat 7 datasets provided by OnEarth. It is broken up into two layers to increase the rendering speed.
  • "":http://wms.alaskamapped.org//cgi-bin/bdl_extras.cgi?VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:102006&BBOX=131418.383120113,1067971.44342039,148872.438247109,1077920.25484277&WIDTH=1000&HEIGHT=570&LAYERS=bdl_landsat_pan_full,bdl_landsat_pan_overview&STYLES=&EXCEPTIONS=application/vnd.ogc.se_xml&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE


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