| casual cartographer n. a person who
practices cartography by accident, without prior intent, and often without formal
education in cartography or geodesy. |
Web Site Profile: Electronic Resources for
GeographyElectronic Resources for
Geography, published by Lewis A. Armstrong, Abilene Christian University
This is one of the most comprehensive geography sites on the Internet with
resources for both k-12 and University levels. The site minimizes the use of
icons and other page decor to reduce downloading time with indexes on pages to quickly
move to material of interest on a page. URLs are also shown to help students quickly
prepare their bibliographic citation information.
Submit Your Site:
Get you site featured in The Casual Cartographer. For consideration,
send a 50 word submission complete with URL to ann@rockware.com
Take the Trivia Challenge! Answers at bottom of page
1. What ellipsoid was used in U.S. mapping prior to 1880?
2. Which geodesist defined the ellipsoid used in the U.S. for most of the 20th
century?
3. If you pulled Gunter's chain, how long would each link be?
4. What is a vara, and where might you find it?
Your Comments Please...
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Software's Products. Send us your GIS Tips, or Ask Norm a question.
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to download update.exe or call 1-888-ASK-NORM for help.
Trivia Answers:
1. Bessel 1841
2. Alexander Ross Clarke, a British geodesist who never walked on North American
soil defined the Clarke 1866 ellipsoid, among others.
3. 7.92 inches
4. A Spanish unit of measurement (1 vara = 32.993 inches) used in
Mexico and several other countries that were under Spanish influence. Some property
lines in California and Texas may still show lengths in varas.
Attention Casual Cartographer Subscribers:
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Letters to editor, send email to: ann@rockware.com
|
Letter from Norm
-Y0K Problem (Yes, that's year zero K)
Freebie of the Month
-Geoid Height Calculator
GIS Tips
-Coordinate Systems Part III
Ask Norm?
Question 1: Errors in the Molodensky
"freebie"?
Question 2: Can anyone define the "Denominator
of Flattening Ratio"?
Readers Respond
GIS Resources
New! State Plane Zone Map
Scanned in 15 sections.
New! USGS Digital Raster Graphics (DRG) Exchange
New! NASA's Remote Sensing and Image
Interpretation & Analysis Tutorial
New! Geosurv
- Full Service Land Surveyors - Lafayette, CO
New! Map Mart is an online resource for digital map and
imagery data. Users can zoom-in on a map of the United States and find their area of
interest and select quadrangles to order.
New! Free AutoCAD Stuff by Dotsoft.com
New! GIS Related Mail Lists
Compiled by Bill Thoen.
Products
Tralaine 4.24 - New
set of options for the SEG P1 format. User specified coordinate formatting pictures in
conversion templates. Current (4.x) Users, download update.exe
free! New Users, download
setup.exe file to evaluate a full working version. |
