BLITMAP(9.1) BLITMAP(9.1)
NAME
blitmap - map plots and path finding on a jerq
SYNOPSIS
blitmap [ options ]
DESCRIPTION
Blitmap displays maps on the jerq terminal. It relies on the mouse to
select regions, functions, and to give formats for typed commands. The
metropolitan N.Y.-N.J. area is the default map. Blitmap's screen con‐
sists of two frames, a large frame for plotting maps and printing mes‐
sages to the user, and a one-line command frame at the bottom. Blitmap
recognizes two commands from the keyboard, to designate a region and to
scale or plot a route from one point to another. A command may be
typed at any time.
Button 3
Regions Se‐
lect
which
re‐
gion
to
plot.
Avail‐
able
re‐
gions
are
San
Fran‐
cisco,
New
York
City
and
North
Jer‐
sey,
Wash‐
ing‐
ton,
Los
An‐
ge‐
les
and
Ann
Ar‐
bor.
Zoom-in Us‐
ing
but‐
ton
3
and
the
box
icon,
en‐
close
the
area
de‐
sired
and
blitmap
will
plot
a
map
of
that
area
cen‐
tered
at
the
cen‐
ter
of
the
drawn
rec‐
tan‐
gle.
Zoom-out En‐
close
an
area
with
a
rec‐
tan‐
gle
and
the
map
shown
will
be
re‐
duced
to
the
rec‐
tan‐
gle
size
and
the
rest
of
the
map
filled
in.
The
cen‐
ter
will
be
at
the
cen‐
ter
of
the
drawn
rec‐
tan‐
gle.
Center With
but‐
ton
3
point
to
new
cen‐
ter.
The
ra‐
dius
will
re‐
main
the
same.
Prev. map Blitmap
plots
the
pre‐
vi‐
ous
frame.
To draw map Gives
the
for‐
mat
of
the
com‐
mand
the
user
types
to
plot
a
map.
To find path Gives
the
for‐
mat
of
the
com‐
mand
the
user
types
to
find
a
path.
Quit Must
be
con‐
firmed
Button 2
Button 2 controls map editing functions. No editing is actually done,
but by using the -f option, a file of changes will be written, which
may be added to the actual database.
Keyboard
[-options ...] radius address[,town or zip]
Blitmap plots an area with the given radius in miles around the
address.
path [-options ...] from address to address[,town or zip]
A route is outlined on a map and printed directions are given
from point to point.
Address may be a number and street or an intersection such as, `main
and 10th' or `600 Mountain av,new providence.' The options specify the
algorithm of the path search and plotting choices. The plotting options
may be used with both commands.
Path finding options
-2 Two ended search (default).
-1 One way search.
-b Breadth search.
-C Cyclists - ignore costs for turns.
-F Stop at first route connect with breadth search.
-H Hierarchical search.(Give priority to database with major
roads.)
-G In breadth search, ignore ones whose cost + dist >4/3 total air‐
line distance.
-J Use precomputed routes. (Available from 600 mountain av,New
Providence.)
-V Verbose directions (all intersections given).
-W Walkers - no cost for turns and ignore one-way streets.
Plotting options
-A Print every possible label.
-B Print business names.
-MIx Forces a detailed street plot for maps whose radius is greater
than 10,000 ft.
-b Don't print boundaries.
-ix Plot only streets with importance >x; x=0 is default.
-j Do sketch map only.
-l Don't print labels.
-r Don't print railroads.
-s Don't print streets.
-w Don't print waterways.
FILES
/n/seki/usr/rje/BLIT/term/term terminal support program
/n/seki/m?/map/* map files
BUGS
Since the data bases have not been checked and many streets are not
connected, some paths may be circuitous. There are no connecting roads
from N.J into N.Y or from Middlesex county into Union. The routing pro‐
grams will churn, trying to find a through street and will not give up.
There are no one-way street tags on the streets. Blitmap does not know
if it has been reshaped.
seki BLITMAP(9.1)