(Sorry for the possible repeat, the previous message was sent from the
wrong e-mail address)
Recently I updated my GPS unit and decided to also update my maps
(2011). After looking at Garmin's prices I decided to take a look at
OSM, and things have come a long way since I looked last (2012?).
I did some reading and headed down the road. Things seem to be
working, but I'm getting inconsistent results - aka the gmapsupp.img
file is not the same each time I create it.
(Note: My Java isn't the latest-greatest, but it should be sufficient
for this process: java version "1.8.0_202")
Here's what I've done:
1) Downloaded the latest versions of mkgmap (r4486) and splitter (r597).
I also downloaded and compiled osmconvert and osmfilter. I placed
them in their own directory:
(I'm a sysadmin by trade, this is what I do...)
ls -l /opt/mkgmap/ /opt/mkgmap/lib/ /opt/mkgmap/bin/
/opt/mkgmap/:
-rw-rw-r-- 1 bin bin 17989 May 6 02:37 LICENCE
-rw-rw-r-- 1 bin bin 2784 May 6 02:37 README
drwxr-xr-x 2 bin bin 4096 May 7 13:58 bin
drwxrwxr-x 3 bin bin 4096 May 6 02:38 doc
drwxrwxr-x 6 bin bin 4096 May 6 02:37 examples
drwxrwxr-x 2 bin bin 4096 May 6 02:37 lib
-rw-rw-r-- 1 bin bin 2350418 May 6 02:37 mkgmap.jar
-rw-rw-r-- 1 bin bin 413879 Jan 30 07:11 splitter.jar
/opt/mkgmap/bin/:
-rwxr-xr-x 1 bin bin 182128 May 7 13:58 osmconvert
-rwxr-xr-x 1 bin bin 100640 May 7 13:58 osmfilter
/opt/mkgmap/lib/:
-rw-rw-r-- 1 bin bin 475284 May 6 02:37 fastutil-6.5.15-mkg.1b.jar
-rw-rw-r-- 1 bin bin 132654 May 6 02:37 osmpbf-1.3.3.jar
-rw-rw-r-- 1 bin bin 533455 May 6 02:37 protobuf-java-2.5.0.jar
-rw-rw-r-- 1 bin bin 120069 Jan 30 07:11 xpp3-1.1.4c.jar
2) I downloaded an OSM extract from Geofabrik, and using splitter carved
up my canada-latest.osm.pbf into pieces. As per the wiki I used
osmconvert and osmfilter to build the bounds data. These steps are
consistent and repeatable. Here are the steps I've taken just in case
they are consistently wrong...
osmconvert canada-latest.osm.pbf -o=canada-latest.o5m
osmfilter canada-latest.o5m \
--keep-nodes= \
--keep-ways-relations="boundary=administrative =postal_code
postal_code=" \
-o=canada-latest-boundries.o5m
mkdir bounds
java -cp /opt/mkgmap/mkgmap.jar \
uk.me.parabola.mkgmap.reader.osm.boundary.BoundaryPreprocessor \
canada-latest-boundries.o5m bounds
mkdir work
( cd work ; java -jar /opt/mkgmap/splitter.jar ../canada-latest.osm.pbf )
The final step (afaik) is to combine the split files and the bounds
information into a single gmapsupp.img file.
( cd work ; java -jar /opt/mkgmap/mkgmap.jar \
--route --add-pois-to-areas --bounds=../bounds \
--series-name='Canada OSM 2020' \
--family-name='Canada OSM 2020' \
--area-name='Canada OSM 2020' \
--country-name='Canada' --country-abbr='CA' \
--description='OpenStreetMap data for Garmin (2020)' \
--index --gmapsupp 6324*.osm.pbf )
This always runs to completion with MapFailedExceptions and
ExitExceptions returning 0. Approximate time 19 minutes (4 core, 32G).
I am assuming that the series-name, family-name, etc are just different
tags used by different Garmin units. I haven't tried uploading it to my
GPS unit yet as I'm concerned about the inconsistencies. Here are the
results from multiple runs (osm/bounds/split data is all identical):
1260027904 May 7 16:54 gmapsupp.img
1260027904 May 7 17:18 gmapsupp2.img
1259929600 May 14 10:49 gmapsupp3.img
1259929600 May 14 11:44 gmapsupp4.img
md5sum -b *.img
34053990aecc68a257e95115b2bb3f45 *gmapsupp.img
91e3d3e9f0012672da65dead8c752dd9 *gmapsupp2.img
821234ad26e17d0135bf613cf9faf161 *gmapsupp3.img
abf39cef1430c4cbd74795fa11b571b8 *gmapsupp4.img
Is this normal? If so why?
Thank you for any help you can provide!
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