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GEODIS01.TXT
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1996-01-28
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GEODIS v1.04
Overview
GEODIS (GEOgraphical DISplay) - (c) 1995/96 Rolf Aeschbacher
This program draws maps of different countries on the Psion Series 3a. You can
move the map around, enlarge or reduce it (zooming) and you can search for and
display places. Information such as distance between places, population and
elevation of cities etc. can be viewed.
Geodis uses overlays to draw details such as roads, lakes, hotels etc. on the
map. You can turn overlays on or off at any time.
This program was developed specifically for the Psion Series 3a, with two
objectives in mind: low disk and memory usage and fast screen drawing. The
firts goal was achieved by using compact binary files that are only loaded by
the program when required. The second goal, fast drawing speed, is more
difficult to achieve, as it is dependent on processor speed. Waiting time can,
however, be reduced by interrupting screen-redraws by pressing ESC or any other
active key (eg. pressing F interrupts screen drawing and goes straight to the
"Find" menu).
Note: Files that are contained in the full version only and functions that only
the full version has, are marked with [*] below.
Installation
If you have installed an earlier version of Geodis you should first delete alle
files in the directory \Geodis\ as well as the file \App\Geodis.app. Also,
remove the application from the system screen.
Note: Geodis now resides in \App\Geodis\ to make it more standard.
- in \APP\
Geodis.opa
- all other files in \APP\GEODIS\
Geodis.pic
Georich.opo
Geosupp.opo
Geomsg.01 (English texts)
Geomsg.03 (German texts) or
Geohlp.01 (English online help, optional) or
Geohlp.03 (German online help, optional)
Installation Schweiz/Switzerland - files in \APP\GEODIS\
(all cantons, all communities)
Schweiz.ini
Border.ch
County.ch
Ewho.ch
City??.ch1 (9 files)
Default.ch3
Dist.ch1
Overlays (optional, extensions ch2 and ch3):
- McDonald McDonald's Restaurants
- Movenpic Moevenpick restaurants/service areas
- Seen Lakes of Switzerland
- Staedte all 110 cities with population
- [*] Autobahn Highways
- [*] Badminto Badminton places with addresses/telephone numbers
- [*] Baeder Kurbaeder - health resorts
- [*] Bergrest a choice of alpine restaurants
- [*] Bowling Bowling alleys, supplied by Ralph Oderbolz
- [*] Fastbox Fastbox machines
- [*] Fluesse Rivers
- [*] Gipfel important mountains
- [*] Gitter1+2 the national grid
- [*] Kantone all 26 cantons of Switzerland
- [*] Zh_* Types of communities in the canton of Zurich (5 overlays)
Installation USA - files in \APP\GEODIS\
(all states, largest cities)
Usa.ini
Border.us
County.us
Ewho.us
City1?.us1 (3 files)
Default.us3
Overlays (optional, extensions us2 and us3):
- Lakes the big lakes
- States the states
- [*] Pun_* the states with Capital Punishment (5 overlays)
Installation France1 - files in \APP\GEODIS\
(all departements with their numbers/names, no cities)
France1.ini
Border.f1
Overlays (optional, extensions f12 and f13):
- Departem all departements
Installation Vector - files in \APP\GEODIS\
(different vector graphics as overlays, of course with Zoom)
Vector.ini
Border.ve
Overlays (optional, extensions ve2 and ve3):
- Columbia Space 'ship' Columbia
- [*] Illusion Optical illusion
- [*] Krumm Optical illusion
- Lissajou Lissajous
- [*] Maisha Vector girl
- [*] Penrose Optical illusion
- Porsche surprisingly, a Porsche
- [*] Skull yes, a skull!
- Spirale Mega spiral
- World Globe
Install Geodis.opa with Psion-I.
Files not needed by the program:
Geocomp.opo to create overlays (full version only)
Geodis01.txt English documentation (ASCII file)
Geodis03.txt German documentation (ASCII file)
Geodis01.wrd Doc in Psion WRD format (available on request)
Geodis03.wrd Doc in Psion WRD format (available on request)
All files must be copied onto the same disk (A:, M: or B:)
The files Geodis.??s and Geodis.reg are created automatically in the directory
M:\opd\. The former contains the setup and the latter the registration
details.
Keys
+ - 1 2 3 4 5 6 7: zoom in/out, select zoom level
Arrows: scroll map, Psion-Arrows: scroll map in large steps
ESC: stop drawing
Space: redraw screen
Star *: center again
Help key: online help. please read!!
TAB: toggle scale ruler
Diamond: much/few detail [*]
Display (A)
To make the program more flexible and to save memory, the maps are subdivided
into up to three regions.
The map USA isn't divided yet.
The states are: AK AZ AR CA AL CO CT DE FL GA HI ID IL IA IN KS KY LA ME MD MA
MI MS MO MT MN NE NV NH NJ NY NC ND OH OK OR NM RI PA SC SD TN TX UT VT VA WA
WV WI WY DC
MM CC (Mexico and Canada)
The Swiss map is divided as follows:
1. North (cantons ZH BE SO BS BL SH AG)
2. East/Central/South
(cantons LU UR SZ OW NW GL ZG AR AI SG GR TG TI and FL)
3. West/Near countries
(cantons FR VD VS NE GE JU and DD FF OO II)
The Swiss database is based on local governmental divisions, so some well-known
tourist areas may not be included. There are also a few cities in the database
from the five countries that surround Switzerland [*], however without
population or elevation data. Please let me know if you could provide data on
tourist areas or towns beyond the Swiss border.
Formulas (A)
Only Swiss and US map: The 'display' dialog has an entry 'Cities by formula'.
Activate it and you will be able to enter a formula. For the data of each place
the formula is computed (using EVAL). If the result gives TRUE that place is
drawn on the map.
Variable sized marks:
If you activate this menu choice, each place matching the formula is drawn as a
box on the map. The size of this box depends on the population and the
elevation: the larger the population the wider the box and the larger the
elevation the taller the box. The boxes are between 1 to 16 pixels large
(inclusive), where 1 pixel wide/tall means that the population/elevation is not
known. You can as always type B to turn the text display on/off.
Examples for formulas: see online help
Diamond key
Switch between much and few detail. [*]
Info about places (I)
The following information about cities is displayed:
- Canton, state or country
- Elevation (m or ft)
- Population (for Switzerland based on the 1990 national census)
- Swiss map only:
a) Coordinates (national grid), with a precision of 1 km
b) Geographical coordinates (longitude/latitude), calculated from the
national grid coordinates
c) Locator: a code which is used for HAM Radio and Packet Radio for worldwide
positioning, calculated from the geographical coordinates
(example: JN47HM)
If it is an item from an overlay you will see the name of the overlay in the
title in angle-brackets [...].
Distances (D, T)
Psion-D
The 'distance as the crow flies' is calculated from the coordinates.
Note: Unfortunately the distances calculated for the US map are not very
accurate. Use those figures with care.
Psion-T
Swiss map:
The program knows the distance on the road between the 36 cities contained in
this list. Choose two such cities and press D for distance.
US map:
The program knows the distance on the road between the 32 cities contained in
this list. Choose two such cities and press D for distance.
Searching (F, L)
The searchtext can be up to 30 characters long. It is case INsensitive by
default and 'Umlauts' don't have to be entered. If you enter 'zur' Geodis finds
Zurich, Zurzach etc.
Psion-F
F searches for places/texts in overlays.
Psion-L
L searches for cities only and presents all places that have been found in a
sorted list.
Anchor city (N)
You can anchor a place that is already displayed. All further distance
calculatons will be made from that place.
History (G)
Places selected during a Geodis session are stored in their own list, which can
be recalled by pressing G. If a place is selected from this list, the program
switches to the search function, using the place-name as search text [*].
Overlays (O, P)
Overlays can either be points (cities, hotels etc.) or lines (roads, lakes,
rivers etc.).