Maps and Mapping

Ohio Topographic Map Index - download at the bottom of this page.
 
Ohio Geographically Referenced Information Program

Ohio Statewide Imagery Program (OSIP) Downloads Source for State Color Aerial photography flown in 2007/2008 and LiDAR data flown at the same time. Images can be viewed with Arc/GIS Explorer (http://www.esri.com/software/explorer/index.html)
- OSIP1 Data - 2006-2010
- OSIP2 Data - 2011-2014

Ohio Geodata Distribution (DLGs/DEMs/DOQQs/DRGs) - Digital Topo Files

  • DRG - Digital Raster Graphics - i.e. scanned USGS topo sheets projected to Ohio State Plane Coordinates NAD27.
  • DOQQ - Digital Orthophoto Quad Quads - i.e. BW aerial photography showing one quarter of each quad sheet.

Ohio's Location Based Response System - LBRS Data by County
 
On-Line Calculator for Current Magnetic Declination (
http://www.ngdc.noaa.gov/geomag-web/)
Lat/Lon to UTM (
http://www.ngs.noaa.gov/cgi-bin/utm_getut.prl)
UTM to Lat/Lon (
http://www.ngs.noaa.gov/cgi-bin/utm_getgp.prl)
output of either above calculations also shows grid convergence.
 
Python script to convert USGS DLG-O files to DXF (requires Tkinter and ScientificPython) - Download at the bottom of this page.
Self-extracting zip of Windows executable of above script. Extract to a directory and then run the dlg.exe file in that directory. (All necessary files included, no need to install Python or Tkinter or ScientificPython) - Dowload dlg.exx below and rename to dlg.exe to execute.
 
Python script to convert ESRI GRID DEM to XYZ DEM. (requires Tkinter) - Download at the bottom of this page.
Self-extracting zip of Windows executable of above script. Extract to a directory and then run the grid2xyz.exe file in that directory. Download grid2xyz.exx below and rename to grid2xyz.exe to execute.

 
* IOF Control Descriptions - learn what all those little hieroglyphics mean
 
* ISOM Symbol Index - International Symbols for Orienteering - descriptions, definitions and specifications of O-map symbology
 
TopoZone - online topographic maps
 
myTopo - Custom-build a printed topo or aerial photo map. Center your seamless map online, customize with titles, navigation grids, and your name, and we'll print and ship your maps on waterproof, tear-proof paper.
 


* Links need to be updated.

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Earl Reisinger,
Jun 30, 2016, 12:51 PM
ċ
dlg.exx
(3348k)
Earl Reisinger,
Jun 30, 2016, 1:08 PM
ċ
dlg.py
(31k)
Earl Reisinger,
Jun 30, 2016, 12:52 PM
ċ
grd2xyz.exx
(3344k)
Earl Reisinger,
Jun 30, 2016, 1:08 PM
ċ
grid2xyz.py
(3k)
Earl Reisinger,
Jun 30, 2016, 12:52 PM
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