Geography Reference
In-Depth Information
CHAPTER
6
OVERVIEW
IN WHICH, by inspecting or simply
viewing data in a variety of ways, you
take steps toward analysis.
Analysis of GIS Data by
Simple Examination
Information
There are two simple ways of looking at a packet of
information:
A small amount of matter-energy with the potential to
produce large effects
❏
❏
A sequence of 1s and 0s—for example, 10100011
The poem “Paul Revere's Ride” (excerpted) by Henry
Wadsworth Longfellow, illustrates both:
LISTEN, my children, and you shall hear
Of the midnight ride of Paul Revere,
On the eighteenth of April, in Seventy-Five;
Hardly a man is now alive
Who remembers that famous day and year.
He said to his friend, “If the British march
By land or sea from the town to-night,
Hang a lantern aloft in the belfry arch
Of the North Church tower, as a signal light, —
One, if by land, and two, if by sea;
And I on the opposite shore will be,
Ready to ride and spread the alarm
Through every Middlesex village and farm,
For the country-folk to be up and to arm.”
[. . .]
1
Meanwhile, impatient to mount and ride,
Booted and spurred, with a heavy stride
On the opposite shore walked Paul Revere.
Now he patted his horse's side,
1
Indicates omission.
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