installation and environment; basic problems
General topics on GARtrip; how to use the program
Data exchange with other
installation and environment; basic problems
Is (or will be) another program version for other
operating systems (Linux, macOS…) available?
No. Anyway, it’s reported that Gartrip runs on these
operationg systems using the Windows simulator Wine.
Whenever I start Gartrip, I am told to re-install
Microsoft Office. What shall I do?
Gartrip has nothing to do with the Office program package.
Anyway, there is kind of unknown interaction between Microsoft systems. Say
„OK“ to the re-installation. It will notice that
all is okay, and you’ll no longer be bothered.
I use an USB-to-serial Converter to connect
the receiver. This works with all other programs but not with Gartrip.
In this case the driver of your converter is incompatible to the
environment of Gartrip. Without complete reprogramming of Gartrip with
another environment, we can't solve this problem but some users found a
solution as follows:
- The converter driver has to be de-installed, then installed with the driver installer program
running in compatibility mode for "Windows XP (SP3).
- After installing the converter, Gartrip shall
- Scan the
website of the converter manufacturer for another driver, preferrably a driver which
works for more than one Windows version.
I have a Garmin Nüvi /
Colorado receiver. How can I read and write waypoints with Gartrip?
From version 211 on, Gartrip accesses these Garmin
recievers the same way as others: by the menu
All text fields of the program, even the menu items, are shown as
Either the file gartrip.res in the program folder is missing. Or
you've installed a Windows language option requiring Unicode support, for
example Chinese or Greek. On the Windows Control Panel / Regional and
Language Options page, go to the bin "extended". There is a
language selection for programs which do not support Unicode. Gartrip does not
support Unicode, so this option will affect Gartrip. Select
"English" or another language supported by Gartrip.
Can't Gartrip read and write files for Mapsource and Google Earth?
It can't read and write the special file formats
of those programs, but with the general purpose file format GPX this is
possible - for Googel Earth with KML as well.
Why not use the GPX file format in general, to
save user data, instead of the special file formats of Gartrip? Then I
would not need to convert my data each time I want to access it with
This is not recommended because Gartrip, like all other programs,
saves additional data in its own format. Those additional data cannot be
saved in GPX. For waypoint files they are, for example, the suitable
time zone for the region of the waypoints, and the suitable coordinates format and geodetic datum, and for tracks
they are the optional comment texts, and the line colors.
My PC has no serial port. May I connect the
receiver via USB instead?
You may use a USB to serial converter. Please ask
your computer dealer. Read the help on this topic ("Receiver
I don't get the serial comm
port of my PC working with Gartrip.
In most cases the port will be used by another program, or your
transfer cable will have broken contacts, or the transfer protocol has not
been set correctly. Please follow the instructions in the Help (search for
The bottom part of the map is hidden by the task
Just reduce the size of the map a little. For this purpose, drag the
RIGHT border of the map to the left hand side. The bottom border will be
adjusted automatically, keeping the aspect ratio of the map constant. Your
setting will be kept between sessions.
The program worked well all the time, but now the
texts don't fit to the buttons any longer.
This may happen if something in the Windows graphics system went
wrong, maybe caused by the installation of another program. It can be
repaired by changing the screen resolution and font size of Windows forth
and back again.
It happens that the program terminates with a run
time error message, or the PC freezes completely
when Gartrip draws the chart or transfers data.
Use "Windows Standard" mouse pointers. This is a rare
problem that is dependent on PC configuration. It was reported by a user
who also had a similar problem when opening Outlook Express. He had an ATI expert@work graphics card and IntelliPoint Software,
and was using the "Animated Hourglass" mouse pointer scheme.
The solution was to disable animated pointers as follows. Open the Mouse
Control Panel and select the Pointers tab. In the panel headed
"Scheme", select "Windows Standard" from the drop down
list. An alternative solution is to turn down graphics acceleration using
the System Control Panel. Select the Performance tab and then click on
Graphics. Adjust the slider to its second lowest position (Basic
accelerator functions). However, you might find the graphics system is then
too slow for normal with this setting.
On the printed chart the waypoints do not line up
with the map, although it was correct on screen.
Some HP printers have this problem with certain settings. Try
another printer setting for graphics resolution, or disable the preview.
One user could not disable the preview, but he solved the problem by
connecting the printer to another PC in his network. Network printing is
always without preview, and all works well.
General topics on GARtrip; how to use the program
I want to take UTM coordinates from a map, but the
format does not fit to the format described in the Gartrip Help.
UTM coordinates consist of a zone (number and letter), easting value, and
northing value. It happens that the zone is omitted, or the zone is given
within the map description and not at the grid lines. If only the zone
letter is missing, you may just set it to "R" for the northern hemisphere, or to "E" for the southern
hemisphere. The program will find the correct letter from the complete
coordinates. If the zone number is missing, you should check whether the
zone number precedes the easting value: if the easting value has more
digits than the northing value, the first two digits will be the zone
number. If the zone is missing completely, you may find it when the rough
coordinates are known in latitude/longitude format. Create a waypoint within
Gartrip, using these known lat/lon coordinates, then change Gartrip to UTM, and read
the zone of this waypoint.
Please read the Gartrip Help on this topic (search for Index
Why does Gartrip always show a leading zero for
UTM easting values?
This was not invented by me. This is the UTM standard. Garmin receivers use
exactly the same format but some other programs don't. The option
"System, Unit for metric coordinates, UTM: add missing zero" will
add this leading zero if you forget it. This option is enabled by default.
You should disable it when working with fixed UTM zones at locations
exceeding the selected zone. In this case it may happen that the leading
digit is nonzero.
Gartrip shows UTM coordinates with a decimal
point. This does not fit the standard.
The decimal point is only a reading aid. It is easier to read
5325.875 than 5325875 - when entering coordinates,
you don't need to enter the point at all. And if you don't like to see it
you may disable it using the menu "System / Unit for metric
coordinates / km". This also affects the export text file format.
When calibrating a map, or when creating a new
waypoint, I want to use a metric coordinate format (UTM for example). But I
am not sure whether I know how to enter the numbers. How can I take care to
do it right?
Are there already waypoints near to the new one? If there are, just
check the spelling of its coordinates as a template. If there aren't, you
may first create a dummy waypoint using the coordinates format with
latitude/longitude (hddd.ddddd°), then switch
over to your desired coordinates format.
Does Gartrip show the accumulated altitude of a
Yes - provided that your receiver records the altitude at all. Hit
"Edit Tracks" and "Analyze Track Range". See the line
"Altitude" showing the minimum and maximum altitude of your
track, followed by the accumulated ascending and descending altitude
(enclosed in parentheses).
When defining a route, I sometimes get a yellow
warning box saying "Closed route". What does this mean?
You have selected the same waypoint as the beginning and the end of
your route. Your intention will be to make a circle trip. But your GPS
receiver might have some problem with this kind of route. When switching
the receiver on while being near the start and end
point, the receiver will be confused deciding what the active route leg
would be. In many cases it will start with the last leg. So I recommend
omitting the end point from your route, and while travelling along it,
moving the start point to the end of the route.
The same kind of problem might come up if two route legs approach each
other, or even worse, if one route leg crosses another one. In this case
you get the warning "crossing route".
How may I get an area calculated?
You can define the area by two different ways:
1) By waypoints at each corner: Create a route defining the outline of the
area, with the first and last route point being the same,
you get the yellow warning box "closed route" with the calculated
2) By a track: Record or draw a track of the outline of the area, with the
end point near the start point. Then hit "Edit Tracks" and
"Analyze Range". The track analysis will include the enclosed
area if the track was nearly closed.
May I transfer a scanned map to the Garmin
When printing the chart, all texts are replaced by
black fields on the screen. What's wrong?
Nothing is wrong here. The black fields represent the printed size
of the text fields. They are too small to be readable on screen. The black
rectangles give you the indication how the text will be placed on the
I cannot get the speed diagram for my tracks, nor
is the time and speed shown when "Edit Tracks" is enabled. What
To calculate the speed of track GARtrip
needs the date/time information of each track point. Some Garmin receivers
do not keep this information when you "save" a track within the
receiver. The date/time information is only kept for the so-called
Does GARtrip save the altitude(elevation) of tracks?
Yes, from version 203 on! But this feature is only available for
some new Garmin receivers like the eTrex. Others
like the GPS12 family don't transmit the altitude at all.
Why do I have to set my time zone twice in the
There are two time zone settings in the program affecting different
1) In menu "Edit list" you find "Time zone of this
list". This setting controls the display of time stamps of waypoints
and track points.
2) In menu "System" you find "Time zone at home". This
setting controls the PC clock correction. In addition, whenever you create
a new waypoint list from scratch, the home zone setting will be copied to
the list zone setting.
And why are there two different settings? You will find this useful if
coming back from a trip to a different time zone. Whenever you open the
waypoint file from this trip, all waypoints and track points will be shown
with the time zone valid there, while the PC clock correction still refers
to your home time zone.
How may I get my track log analyzed by GARtrip: speed, distance, duration?
Load your tack, hit "Edit track", then "Range: whole
track" or any other option. You will get distance, direct distance,
average speed, duration with and without included pauses, and altitude
range with total ascend/descand. You can get this
information on any selected part of the track.
How may I have GARtrip
supporting all waypoint symbols of my GPS?
Garmin uses to increase the number of waypoint symbols when creating
a new firmware, and these new symbols were not known when GARtrip was created. To support them anyway, GARtrip has a learning mode for unknown symbols. For
you this means: If you know about a new symbol within your Garmin, all you
have to do is to assign this symbol to a waypoint within your Garmin. Then
you should read the waypoints to GARtrip. Now GARtrip will see an unknown symbol identifier, and it
will append this identifier to its symbol list, with a default symbol name.
To define the suitable symbol name, please search for "Symbol"
within the help system and follow these instructions.
For your convenience, you may download the complete file
SYMBOL_3.INI for the GPS12map
60C/60CS/76C/76CS or 172C.
On some web sites, coordinates are given using
British Grid in an all-numeric format. Is this understood by GARtrip?
The whole British Grid is only one Transverse Mercator zone.
Therefore it is possible to define a user grid for this purpose. Just add
this line to your file DATUM.INI:
#(GB) British Grid num,Ord Srvy
Why does GARtrip support
so few Geodetic Datums?
Garmin receivers, and some PC programs, offer more than 100 Geodetic
Datums, but most users will use very few only. It
is inconvenient to scroll through a huge list each time. Therefore GARtrip was restricted to the most popular datums. If you need another one, knowing its shift
parameters, you may enter them yourself. Follow the instructions in the
Help file under "Datum". If you don't know the shift parameters,
you may ask the author. Look here for some more datums.
You never speak about "upload" and
"download" for transfers from/to the Garmin. Why?
When looking through other programs, I found that some authors say
"upload" when transferring towards the Garmin, others say
"download" to the same transfer, and vice versa. Is this because
some people put their Garmin on top of the PC (upload) and some put it
below the PC (download)? No matter what is up and what is down, I refer to
the PC program being the active part: writing data to the Garmin, and
reading data from it.
Now, with the SA being gone, is it still useful to
improve the precision of a waypoint by the averaging functions of GARtrip?
In most cases you won't need it any more, see next item. If you want
to improve anyway you should use the averaging a bit different than before.
When averaging some waypoints, you should care that the single waypoints
are taken with at least one hour time difference, and that they are not
taken at the same time of day. This is recommended because the remaining
GPS error changes much slower that the old SA error,
and they show some 24 hours periodicity. When averaging a track range,
please ensure that the track points were recorded at a fixed time interval,
and that the track was recorded for more than one hour. You will get best
precision with a 24 hours track; see "On GPS
precision". If set to automatic mode, your GPS receiver would
record nearly nothing because it suppresses recording whenever it does not
detect any movement.
How do I get the best precision when marking a
waypoint using my GPS receiver, with the SA being gone?
This question is not related to the program GARtrip.
1) Ensure the receiver has been on for a few minutes and has obtained a
2) Check the EPE. If this is larger than you normally experience, don't
trust the reading to be accurate. For a 12XL this probably means not
trusting readings when the EPE is in double figures (metres).
3) Before marking the position, watch the numerical position for a few
seconds. If the position is wandering, wait until it is steady before
pressing the mark button. Then save the position without averaging.
4) Following the above instructions should result in most readings having
an accuracy of 5 meters, and should avoid inaccuracies of any more than 10 metres. [This is a slightly pessimistic view, but it is
a simple statement using nice round figures.]
The reason for without averaging
is because the position displayed whilst averaging is the averaged position
and any instability in the signal during the averaging can
not be seen. This type of averaging therefore precludes the
opportunity of rejecting averages that may include the higher errors. As
the improvement to be gained by a short term average is small, it is not
worth this risk. The averaging function of the receiver is useful only if
you don't want to watch what is said before, but the procedure above will
be more effective.
Contributed by Allen Oliver.
Does GARtrip use scanned
Yes, from version 200 on.
How may I use a map from a CD, like a TOP50?
There are different TOP products. Therefore there is no general
rule. If the viewer of the TOP map has an export function (like the Swisstopo) you should use it to create a BMP file, if
possible with coordinate grid lines. This map file must be calibrated with
For viewers without export function, you can use the print function like
explained below under "How may I export the chart into another
graphics program for further manipulation?".
For viewers without printing function, the only way is to use a screenshot.
This method is available in each case but you'll get poor map resolution.
All waypoints and tracks are displaced by some
hundred meters on my scanned maps, although I was very careful when
calibrating the map.
It appears that you had selected the wrong Geodetic Datum before
calibrating the map. It does not help to set the datum after calibration.
So you must select the proper Datum for your map, and open the calibration
menu again, then correct the coordinates.
Whenever I try to calibrate a map, the OK button
is disabled, or the result is completely off. What's wrong?
You probably entered the coordinates of the calibration points in
the wrong format. They must be given in the format and Geodetic Datum you
have selected on the main panel (degrees, UTM, etc.), and one wrong
character may confuse it totally. The same applies to coordinates of
waypoints, but maybe you don't use numeric coordinates so often. For an
explanation of all formats, highlight the format selector on the main
panel, then press F1 for Help.
It is good practice not to enter coordinates from scratch but to select a
waypoint first, even if you won't use an existing waypoint for calibration.
Once shown, the coordinates can be edited then. This method gives you a
template. It shows how the coordinates shall look like.
When working with UTM coordinates, you should not forget to enter the zone
with its letter. If the zone is entered as 32 instead of 32U, then the program
does not know if you are on the southern or northern hemisphere.
Does GARtrip work with
the German Topo CDs of the Landesvermessungsämter?
No. These CDs use a proprietary data format.
What file format shall I use when scanning maps?
Gartrip accepts BMP, GIF, and JPG files.
BMP is the pure pixel format without any compression. It creates the
biggest file size but it loads fastest.
GIF is a loss less compressed format. It will create the smallest files
without any loss of quality. The degree of compression depends on the type
of the image. The more constant coloured areas,
the smaller the file will be. If your scanning program supports Gif then
this will be the best choice for maps.
JPG is a compressed format, designed mainly for photographs. You have to
select the degree of compression, and this results
in some loss of quality.
Whatever you use for the file format, I recommend to set
the canning resolution to 150 dpi for most maps, and 200 dpi for very fine
What is the maximum map size?
The program itself does not limit the size of a map but on some
computers the graphics functions of Windows will not work properly if the
map is greater than 4 MB. You will not get beyond this limit when scanning
an A4 sheet with 200 dpi.
Data exchange with
How may I find the file import and export
Just select "File: Save as...".
On the following panel, select the proper file format.
How may I export the chart into another graphics program
for further manipulation, and how can I send a Gartrip chart to friends??
You may use the function "Print" for this purpose, with a
program like PDF Creator. You get this open source program at
http://www.pdfforge.org/. It creates files in many different formats like
PDF, JPG, BMP and others.
How may I copy the chart to another graphics
program as a bitmap?
With the chart window active, press Alt-Print on the keyboard. Then
open your graphics program and insert. The result is limited to screen
How can I save my data in a readable format, in
order to process them with Excel?
Select the file format "Gartrip Export Text" when saving
the data. You find a full specification of this format in the Help of
Gartrip, searching for "Export".