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| GeoCommunity Mailing List |
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| Subject: | [gislist] mapping |
| Date: |
09/02/2004 03:30:02 PM |
| From: |
Chip Westbrook |
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=20
GIS people
I have been in the mapping field for close to forty years, and have =
applied my trade around the world on varying projects. I find now when I =
approach a city to solicit work in map revision and up dating the first =
or second person that I meet states flat out "we do all our own mapping =
in house"" we do not do any subcontracting". Now I know these people are =
clueless as to what constitute mapping. My question is where in this =
maze is the person who controls all the strings? And what do you call =
old fashion mapping now?
I have been asked to define mapping as I see it.
Mapping has been from the first a record by humans of their travel and =
observations.
Mapping is a compilation of the unknown being discovered so that those =
coming after may benefit.=20
Mapping of the human genome was building a record of the human gene =
discovery.
Mapping by Lewis and Clark was the logging down of their travels and =
discoveries.
Captain Cook mapped the west coast line of the Americas and the Islands =
of the Pacific.
When a GPS position is recorded on a manhole I would call that mapping. =
Up until then you may visually know where the manhole is located and you =
can direct someone to that location by referring to other visual =
objects, but with the GPS position you can say it lays at this point =
based on this reference.
If you take that manhole position and place it on a plan map of that =
locality, then print a hard copy showing just that, I would call that =
Cartography. You have taken information supplied by others and assembled =
it into a useful tool.
Mapping in the field of Photogrammetry is the construction of lines in =
two or three dimension, on paper or in CAD, to represent visible objects =
on Photographs.=20
Mapping in the field of Cadastral Surveying is the construction of lines =
in two or three dimension, on paper or in CAD, to represent visible =
objects observed in the field.=20
GIS, as I understand, at least that which we constructed in the early =
eighties, used maps created by mapping and added features beyond the =
scope of mapping. This could be used to print cartographic products some =
of which could be called published maps.=20
tyank you
Chip Westbrook
Westbrook Enterprise LLC.
990 Obie St.
Eugene, OR 97402
www.westbrookent.com
541-485-4015
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