black_bike's diary

Recent diary entries

Kartierung Düsseldorfer Norden, Wittlaer

Posted by black_bike on 17 August 2008 in English (English)

Jetzt ist auch der Stadtteil Wittlaer im Düsseldorfer Norden
per GPS vermessen und mit JOSM kartiert worden.

Es fehlen noch Feinheiten, aber das grobe Straßennetz steht.


Aktivität in Ratingen, NRW

Posted by black_bike on 9 July 2008 in English (English)

In der letzten Woche war ich in Ratingen West im Grachtenviertel und in der Siedlung am Grünen See - Alte Spiegelglasfabrik aktiv.

Die OSM-Wiki-Seite von Ratingen wurde erweitert.

Location: West, Ratingen, Kreis Mettmann, Regierungsbezirk Düsseldorf, North Rhine-Westphalia, 40880, Germany

Spruch auch für OSM-Mapper?

Posted by black_bike on 26 June 2008 in English (English)

Ich habe gestern beim aufnehmen von GSM-Tracks im Hofgarten Düsseldorf einen Gedenkstein für Louise Dumont (1862-1932), der Gründerin des Düsseldorfer Schauspielhauses, entdeckt.

Darauf stand ein Spuch, der auch für die OSM-Gemeinschaft gelten kann:

"Warum sucht ich den Weg so sehnsuchtsvoll,
wenn ich ihn nicht den Brüdern zeigen soll."

Aktivität der letzten Tage in Ratingen

Posted by black_bike on 24 June 2008 in English (English)

Ich habe am Wochendende in Ratingen, Eggerscheidt, Hösel, und Breitscheid-Mintarder Berg GPS-Tracks per Fahrrad aufgenommen.
Es waren ca. 180 km.

In Ratingen Eggerscheidt sind fast alle Straßen und Wege eingetragen.

Hösel ist westlich der Bahnhofstraße kartiert, westlich davon fehlt
noch einiges.

Waldweg von Ratingen nach Hösel kartiert.

Fußwege im Brügelmannpark, Cromford kartiert.

Selbst verursachte Fehler im Bereich Hauser Ring behoben.

Weiter geht's bald.

Uploading GPS-Traces, Mapping Ratingen Hösel

Posted by black_bike on 21 June 2008 in English (English)

I did GPS-Tracking in Ratingen, Eggerscheidt and Hösel yesterday.

Added new streets in Ratingen Hösel (south) to the OSM-Map.

Aufnahme von GPS-Tracks in Ratingen, Eggerscheidt und Hösel.

Neue Straßen in Ratingen Hösel (Süd) hinzugefügt.


Adding some new traces

Posted by black_bike on 8 June 2008 in English (English)

I just uploaded some gps traces.

They show details from:

All done by bike.

Location: Zentrum, Ratingen, Kreis Mettmann, Regierungsbezirk Düsseldorf, North Rhine-Westphalia, 40878, Germany

New GPS Traces for Ratingen, NRW, Germany

Posted by black_bike on 27 November 2007 in English (English)

I just loaded my GPS traces for Ratingen and Düsseldorf.

I took them during the last three weeks by bike.

Now I will start editing the maps and add a lot of new streets.


Location: Zentrum, Ratingen, Kreis Mettmann, Regierungsbezirk Düsseldorf, North Rhine-Westphalia, 40878, Germany

Second steps within OSM

Posted by black_bike on 5 November 2007 in English (English)

So now I loaded up the first traces to OSM.

To translate NMEA to GPX I had gpsbabel on the list
before, but I want to thank smssm1 and mallok for their

With gpsbabel -help I found the correct parameters at once
and conversion was no problem. Same with upload of the files to

But then I tried to edit my data with JOSM. I should have been
warned. It was called an expert tool. Surely I'm none.
I will have to RTFM before using it.

For my next traces I will reduce the Interval between GPS points to the
minimal time my device allows and keep the antenna looking up in the sky
all time.

Now I have these questions:

a) Is there a direct way to read out data from Royaltek RGM-3800 via USB from Linux? I like to pass Windows whenever possible.

b) Is there a suggestion or convention how to form the filenames and descriptions for the traces and files on upload to OSM?


Starting with OSM

Posted by black_bike on 4 November 2007 in English (English)

On Friday, 2007-11-02 I started with OSM. The first task was to
get an GPS-device. I decided for a simple GPS-Data-Logger without
display, routing and trackpoints. For the first steps the Royaltek
RGM-3800 should be enough. The price was 60.- Euro. I fetched some
batteries too and charged them.

Saturday, 2007-11-03 I did the first traces in the south of my hometown Ratingen, NRW, Germany. I did it by bike, set the interval of the GPS-points to 10 seconds, mounted the device in front of my and drove about three hours,
tracing the streets. I used the software which was delivered with the device and used (I don't know if its allowed to say it here?) >SAM-ELGOOG< to take
a first look on my results.

On Sunday I set the interval between points to 5 seconds and put the
data logger in my pocked while driving. Now I think the results
look a little bit more inaccurate then those from the day before.
But why? NEVER change TWO parameters at the same time during a test phase!
I set the interval to 10 seconds again and tried it with the data logger
in my backpack.
I traced about 6 hours in the south, centre and east of Ratingen.

After the muscle part I have to begin the brain part now.

I need to translate the Data from NEMEA format to GPX format and then
to learn how to upload the data to OSM and edit the tracks with JOSM
to get real street data.


Location: Zentrum, Ratingen, Kreis Mettmann, Regierungsbezirk Düsseldorf, North Rhine-Westphalia, 40878, Germany