Project%203

1
Project 3

• Finding, Viewing, and Retrieving National Map Data

Geog 121
Karen Smith, Justin Wilson, Nick Moebius, Ben
Risser
2
To Begin

• Make a Project 3 folder which will be located on
  your desktop.
• Name it Project3files

3
DLG

• http//edc.usgs.gov/geodata/textversion.html
• Under 1/24,000 scale DLG Go to FTP via State
  link

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DLG continued

• Click on the state of choice and then the City of
  your choice.
• First click on an attribute of your choice
• Example- Boundaries
• Then click on the .gz file and save to your
  project3files folder.

5
DEM

• Under 1/250,000 scale DEM chose FTP via State
• Chose State and Region of your choice. Use the
  uncompressed download
• Save this file to your project3files folder

6
DOQQ

• http//www.pasda.psu.edu/
• Click on Access Data
• Click on the link DOQQ DRG Viewer and Download
  utility under the heading DOQQ and DRGs
• Click on Identify and Download and then click
  on the County of preference

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DOQQ continued

• Under the FTP heading download the MrSID file
• Save to project3file

8
Importing Your Data to Frontpage

• Open the dlgv32 (make sure it is maximized)
• Click on the file icon in the top left
• Open one of the file types (DLG, DEM,etc.)
• For the DEM and DLG files they will more or less
  open in compressed form. However the DOQQ file
  will need to be unzipped. Browse for the .sid
  file extension from dlvg32. You will be prompted
  to select the datum and coordinate system to open
  this file. You want to use NAD83 and UTM.
• AltPrint Screen which copies what you are
  looking at
• (For example screen prints go to the Project 3
  link on ANGEL http//www.geog.psu.edu/courses/geog
  121/projects/ )
• Open a new front page document and paste image

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Import continued

• In dlgv32 click file then unload all
• Repeat process for the other two remaining data
  sets
• Note After the DOQQ screenprint be sure to
  delete the actual DOQQ file from your
  project3file folder

10
References

• The Pennsylvania State University and
  Pennsylvania Geospatial Information Council
  (2002) Pennsylvania Spatial Data Access.
  http//www.pasda.psu.edu Accessed 24 February
  2005
• United States Geological Survey (2002) USGS
  Geographic Data Download. http//edc.usgs.gov/geod
  ata/textversion.html Accessed 24 February 2005
• ANGEL-http//www.geog.psu.edu/courses/geog121/proj
  ects/
• Accessed 24 February 2005