TIGER(7) TIGER(7)
NAME
tiger - United States street map database
SYNOPSIS
tiger [ county[,state] ... ]
DESCRIPTION
Tiger displays counties from the U.S. Census Tiger Database,
a street map of the entire U.S. and affiliates such as
Puerto Rico, Samoa, the Marshall Islands, etc.
Keyboard commands
s# sets the scale of the map to the number. There are 4
scales per power of 10 and scale 5 is 5 nautical miles
across the screen. Scale 16 (2800 nmi.) is a little
larger than the width of the U.S. Scale 2 is about one
statute mile. From scale 9 to 18, only primary and
secondary roads are displayed. From scales 0 to 8, all
roads, railroads and water features are displayed.
/regexp
All features labeled by text matching the regular
expression are highlighted, even for features not dis-
played at the current scale.
rcounty,state
adds the map of the named county to the current display
list. The center of the display is set to the center
of the resulting display list. The scale is set to 9.
A county can be the name of a county if it is unique
(sandiego) or have a comma and state abbreviation if
the county is not unique (union,nj). The county can
also be a six digit code of the form SSCCCC taken from
the database. See the file /lib/tiger/codes1 for coun-
ties and their codes.
ecounty,state
is the same as r except that the previous display list
is discarded before the new county is read.
q Exit tiger.
Mouse button commands
Button 1
displays the text of the line nearest the cursor. Only
displayed lines are examined.
Button 2
displays the text of the area nearest the cursor. All
areas are examined. Areas (as opposed to lines)
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TIGER(7) TIGER(7)
include oceans, lakes, wide rivers, large cemeteries,
some airports, counties, cities, and a lot more.
Button 3
centers the display on the cursor position and redraws
the map.
FILES
/lib/tiger/SS/CCCC.h
database files where SS is the state numeric code and
CCCC is the county numeric code.
On the distribution there are maps of the San Fran-
cisco area and Manhattan. Look in /lib/tiger for the
names.
/lib/tiger/codes1
is the translation between symbolic names and numeric
codes.
BUGS
Tiger takes 16-32 megabytes of memory. It is only installed
in /mips/bin and should be run only on a large machine.
Because of the large memory usage, it is unwise to display a
large number of counties at the same time.
This program is just a toy.
Page 2 Plan 9 (printed 12/21/24)