[Gvsig_english] gvSIG Mobile workspace - GPS arrow does not work with gvsig mobile log

Mon Oct 11 10:06:45 CEST 2010

Hello, Marcel.

I don't know why you are having issues with the source code from the SVN, but I recommend to use the ZIP file I pointed out in a previous message if you can't solve them. I have attached a screenshot with the parameters I am using.

Regarding the NMEA files, I have tested the three files you have sent and all seem to work, but remember this:

- If the current SRS of the view is not EPSG:4326, gvSIG Mobile will reproject the GPS coordinates to that SRS, so if you add a layer in a SRS which is not known by gvSIG Mobile, the GPS arrow will be painted in an absurd place or not painted at all. Which SRS are you using? If you are using maps of Germany, you'll have to use layers in EPSG:4326, EPSG:32632 or EPSG:32633. Besides, you have to click on the "show GPS arrow" which is not active  by default.

- I think you have sent three NMEA files (gvsig_log.nmea, other_log.nmea, COM17.ubx). The first one has a long period at the start without new coordinates, so this can cause that the arrow does not show for some time. The file COM17.ubx has some ublox-specific messages. Those messages are ignored by the application and other messages are processed correctly. The problem with this file is that it has a new coordinate at the very beginning, and then the same coordinate is repeated, so there is not a new coordinate and the application will not show the GPS arrow (this is a little bug actually). In this case, you should use a long period in the simulation (for example 1000 miliseconds) and when you start the simulation, quickly click on the "view GPS arrow" button, so the arrow is displayed before the first coordinates are processed. Or, you can use a simulation file where the coordinate actually changes from time to time.

Regards,
Juan Lucas Domínguez Rubio
---
Prodevelop SL, Valencia (España)
Tlf.: 96.351.06.12 -- Fax: 96.351.09.68
http://www.prodevelop.es <http://www.prodevelop.es/> 
---

________________________________

De: gvsig_internacional-bounces at listserv.gva.es en nombre de Schoolmeesters
Enviado el: vie 08/10/2010 23:51
Para: Users and Developers mailing list
Asunto: Re: [Gvsig_english] gvSIG Mobile workspace - GPS arrow does not work with gvsig mobile log

Hello again,

here I've got an original nmea log file of ublox (whole data ublox is sending).

It is noised by lines of not readable code. Perhaps thats a little problem for gvsig mobile?

However, as said before, when gps activity is displayed correctly, the gps arrow should be displayed, too.

Regards

Am 08.10.2010 21:58, schrieb Schoolmeesters: 

	Hello again,

	here I have added 2 different nmea files, one is logged with gvsig mobile (run on Eclipse workspace), the other has been logged with a ublox program. 

	Gvsig mobile does not seem to log constantly the same lines or that can be a problem in combination with the uBlox receiver. 

	When I am simulating GPS (using other_log.nmea) and create a log file and use this log file, the created log file looks exactly the same as "other_log". 

	But as I said, the arrow is not displayed even if I connect directly to the GPS receiver @ COM Port...but viewing the gps activity, everything is displayed correctly, I think. That's strange, as I thought, that the arrow would get the same information as the gps activity.

	I should test other receivers, I think. But perhaps you have another idea, it should be possible to get the same information or gps arrow as for gps activity.

	Regards,

	Marcel S.

	Am 07.10.2010 09:58, schrieb Juan Lucas Dominguez Rubio: 

		Hello, I have downloaded the source code from here:

		http://forge.osor.eu/frs/download.php/1041/gvSIG_Mobile_Pilot-0.3-src.zip

		and recorded this video:

		http://www.youtube.com/watch?v=WPHpByPnqzU

		That does not work for you?

		That WMS server is not always available, though:

		http://www.prodevelop.es/files/fm/public/screenshots/gvsig_mobile/server_error.jpg

		Can you send any sample NMEA file to the list so we can check it ourselves?

		Regards,

		Juan Lucas Domínguez Rubio
		---
		Prodevelop SL, Valencia (España)
		Tlf.: 96.351.06.12 -- Fax: 96.351.09.68
		http://www.prodevelop.es <http://www.prodevelop.es/> 
		---

________________________________

		De: gvsig_internacional-bounces at listserv.gva.es en nombre de Schoolmeesters
		Enviado el: jue 07/10/2010 2:18
		Para: Users and Developers mailing list
		Asunto: Re: [Gvsig_english] gvSIG Mobile workspace - getting "WMS image error" after trying to load files from WMS

		Hello again,

		thank you for testing the WMS. I've tested it again (the NRW one) and did not get any picture loaded (no matter which EPSG I choose). On the other hand, the OSM one works fine. So I just have to find an adequate wms, I think. That is ok.

		But concerning the gps arrow I've tested again (no map background)

		1.) connecting to a GPS device at COM port, showing position @ 8.42171° / 49.00797° ------> arrow is not displayed

		2.) connecting to a logged nmea file (logged by gvsig mobile, same position) -----> arrow is not displayed, either

		3.) connecting to an old nmea file (logged by another application, approx. same position)  ----> arrow is displayed and even centered to correct position (checked with map data)

		I'll check whether it will work with another GPS receiver. I don't understand, what should be different. It is always nmea code! 

		However, the position is always displayed correctly. Shouldn't the arrow get the position from the same source as the displayed position (button: display coordinates)

		Regards,

		Marcel Schoolmeesters

		Am 04.10.2010 12:45, schrieb Juan Lucas Dominguez Rubio: 

			Hello, Marcel.

			All the URLs in this message can be tested directly in a web browser. In one of my tests using a web browser, this URL returned a very ugly Java stack trace:

			http://www.gis.nrw.de/wms/DGM50?REQUEST=GetCapabilities&SERVICE=WMS&EXCEPTIONS=XML

			But in other attempts, the response was OK (a XML file with the server capabilities)

			This request works too (using the German EPSG;31429):

			http://www.gis.nrw.de/wms/DGM50?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.0&LAYERS=DGM50&SRS=EPSG:31492&BBOX=2495820.074603175,5597231.470778579,2715995.7222222225,5803033.633983327&WIDTH=338&HEIGHT=317&FORMAT=image/jpeg&STYLES=&TRANSPARENT=TRUE

			This request returns a blank image, which I think is caused by a bug in the WMS server:

			http://www.gis.nrw.de/wms/DGM50?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.0&LAYERS=DGM50&SRS=EPSG:4326&BBOX=6,50.5,8.5,53&WIDTH=300&HEIGHT=300&FORMAT=image/png&STYLES=&TRANSPARENT=TRUE

			The coordinates of the requested box are BBOX=6,50.5,8.5,53 which I think are correct and that should return an overview of that German state. Here is an example using the same coordinates with a different WMS server:

			http://osmwms.itc-halle.de/maps/osmfree?SERVICE=WMS&&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&LAYERS=grenzen&SRS=EPSG:4326&BBOX=6,50.5,8.5,53&WIDTH=752&HEIGHT=499&FORMAT=image/jpeg&STYLES=default&TRANSPARENT=TRUE

			So I think that WMS server says that it can provide maps in EPSG:4326, but it cannot, so you'll have to use EPSG;31429. Unfortunately, gvSIG Mobile 0.3 is unaware of that projection, so the GPS arrow will not be placed correctly. Distance and area measurements will work correctly as long as you choose a projection whose map unit is the meter (for example the Italian EPSG:3003)

			I have tested that WMS server from the gvSIG Mobile 0.3 workspace in Eclipse and it worked fine choosing EPSG:31429. Have you tried that option? 

			As for the log file, yes you are right, that problem should be more visible in the log file, that's our fault.

			Go to Launcher.java and replace this line:

			Logger.getRootLogger().setLevel(Level.WARN);

			with:

			Logger.getRootLogger().setLevel(Level.ALL);

			Perhaps that'll show more messages.

			Regards,
			Juan Lucas Domínguez Rubio
			---
			Prodevelop SL, Valencia (España)
			Tlf.: 96.351.06.12 -- Fax: 96.351.09.68
			http://www.prodevelop.es <http://www.prodevelop.es/> 
			---

________________________________

			De: gvsig_internacional-bounces at listserv.gva.es en nombre de Schoolmeesters
			Enviado el: jue 30/09/2010 14:21
			Para: Users and Developers mailing list
			Asunto: [Gvsig_english] gvSIG Mobile workspace - getting "WMS image error" after trying to load files from WMS

			  Dear list,

			anybody out there who has tried to load a WMS with the source code
			running in Eclipse?

			I've tested the downloadable WinXP version -> no problems apart from the
			language which seems to be spanish only. However, that doesn't matter,
			but I don't understand why my self-compiled version does not load any
			WMS image. Is it possible that the SVN version is not the current
			version? Or did I forget to include something?

			Best regards,

			Marcel Schoolmeesters
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