upload, applet

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upload, applet

Lars Aronsson

Does anybody use the applet these days?  When I zoom in, all I see
is infinitessimally small red pixels.  These are hard to see and
impossible to connect into lines.  Do I need new glasses, or does
somebody need a basic course in user interface design?  Or is
everybody running the stand-alone OSM editor application?

I tried to upload three new GPX files, but all I got back was
three e-mails saying:

  It looks like your gpx file, gbg.gpx, uploaded to
  OpenStreetMap's database ok with 0 points.

And that doesn't sound so good to me.  Zero points?  What was the
error?  These GPX files are just as good as those I uploaded in
July, all created by gpsbabel.  I cannot really tell if the points
are there on the map, because the small red pixels are so hard to
see.


--
  Lars Aronsson ([hidden email])
  Aronsson Datateknik - http://aronsson.se


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Re: upload, applet

Tom Carden
On 10/4/05, Lars Aronsson <[hidden email]> wrote:

Does anybody use the applet these days?  

Yes!  I've been having fun filling in bits of London.

When I zoom in, all I see
is infinitessimally small red pixels.

Link?

These are hard to see and
impossible to connect into lines.  

I agree that at times pixels are inadequate for showing GPS.  I believe Steve is drawing the GPS data into images and caching it now though, so it's not strictly an applet issue.  I imagine that, like with streets, we need to modulate the line/point width based on the current scale.  I still maintain that this is not trivial, and would welcome serious suggestions for how big things should be at what scale. 

Do I need new glasses, or does
somebody need a basic course in user interface design?  

I've done several courses in basic user interface design!  And I agree it's not optimal.  You get what you pay for, I guess.
 
Or is
everybody running the stand-alone OSM editor application?

I've never run it.

I tried to upload three new GPX files, but all I got back was
three e-mails saying:

  It looks like your gpx file, gbg.gpx, uploaded to
  OpenStreetMap's database ok with 0 points.

Didn't Steve say earlier that if an upload fails then he gets notified, and he stops accepting data in case things are getting corrupted?  Perhaps he should update that message to say something else.

And that doesn't sound so good to me.  Zero points?  What was the
error?  These GPX files are just as good as those I uploaded in
July, all created by gpsbabel.  I cannot really tell if the points
are there on the map, because the small red pixels are so hard to
see.

Small red pixels.  Got it.
 
Tom.

PS Lars apologies for duplicate emails, I'm still working my way around gmail...

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Re: upload, applet

Alex Willmer
In reply to this post by Lars Aronsson
On Tue, 2005-10-04 at 23:16 +0200, Lars Aronsson wrote:
> Does anybody use the applet these days?  When I zoom in, all I see
> is infinitessimally small red pixels.  

That's normal, as I understand the applet. The red dots are trackpoints,
plotted from the gpx file you uploaded, 1 dot per logged point. If your
GPS unit has a high logging rate, the red dots will often merge into
solid trail.

> These are hard to see and
> impossible to connect into lines.  

The intention is that you use the red dots as a visual guide, placing
nodes over them, wherever needed. Nodes are drawn as a black spot,
segments (lines) are drawn between them. For an example of

> Do I need new glasses, or does
> somebody need a basic course in user interface design?  Or is
> everybody running the stand-alone OSM editor application?

The red dots could be clearer in places, nodes and segments can be drawn
larger or smaller by using the + (plus) or - (minus) key. Note that the
applet (for me atleast) is sluggish, you must hover over a node for a
moment before dragging the segment, or releasing the mouse button to
complete a join.

To my understanding osmeditor is not yet capable of editting osm data
'live', for now I'm using the applet.
 

> I tried to upload three new GPX files, but all I got back was
> three e-mails saying:
>
>   It looks like your gpx file, gbg.gpx, uploaded to
>   OpenStreetMap's database ok with 0 points.
>
> And that doesn't sound so good to me.  Zero points?  What was the
> error?  These GPX files are just as good as those I uploaded in
> July, all created by gpsbabel.  I cannot really tell if the points
> are there on the map, because the small red pixels are so hard to
> see.

With that, I'm afraid I can't help.

Regards

Alex


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Re: upload, applet

Lars Aronsson
Alex Willmer wrote:

> If your GPS unit has a high logging rate, the red dots will
> often merge into solid trail.

Exactly this is my problem.  I always set my GPS to the
"automatic" logging rate, so it can store a few days of logs.


--
  Lars Aronsson ([hidden email])
  Aronsson Datateknik - http://aronsson.se

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Re: upload, applet

Alex Willmer
> Alex Willmer wrote:
>
>> If your GPS unit has a high logging rate, the red dots will
>> often merge into solid trail.
>
> Exactly this is my problem.  I always set my GPS to the
> "automatic" logging rate, so it can store a few days of logs.

I'm not sure what problem you're having here? Do you mean your GPS logs
too many trackpoints, or that it doesn't log enough and your trail is
unclear?

If it's logging too few points, then you may have to accept the
restriction of limited logging time and set a higher logging rate. 1
trackpoint every 5 sec will give about 1 hr 20 mins of logging for a 1000
pt memory.

I'm not sure why having too many trackpoints displayed in the applet would
be a problem. But if it is, let us know why and we may be able to do
something about it.

Regards

Alex
Alex


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Re: upload, applet

Erik Johansson-2
2005/10/6, Alex Willmer <[hidden email]>:

> > Alex Willmer wrote:
> >
> >> If your GPS unit has a high logging rate, the red dots will
> >> often merge into solid trail.
> >
> > Exactly this is my problem.  I always set my GPS to the
> > "automatic" logging rate, so it can store a few days of logs.
>
> I'm not sure what problem you're having here? Do you mean your GPS logs
> too many trackpoints, or that it doesn't log enough and your trail is
> unclear?

The problem is that it's very hard to see highways, where you have a
high speed, and where there's little need for even  ten meter
precision when positioning the nodes.  When you do highways you want
to be zoomed out alot and that makes the red dots very hard to see
against the satelite image. I have problem with seeing them, and I log
at 2Hz.

btw highways are a prime candidate for automagical conversion to nodes
from the gpx.

--
/Erik

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Re: upload, applet

Lars Aronsson
In reply to this post by Alex Willmer
Alex Willmer wrote:
> > Exactly this is my problem.  I always set my GPS to the
> > "automatic" logging rate, so it can store a few days of logs.
>
> I'm not sure what problem you're having here? Do you mean your GPS logs
> too many trackpoints, or that it doesn't log enough and your trail is
> unclear?

My GPS logs just enough many points.  If you connect them with
lines (http://aronsson.se/geodata/rydsskogen-lines.png), you get a
clear track of where I have been.  But OSM just plots the dots
(http://aronsson.se/geodata/rydsskogen-lines.png) as one pixel
each and that becomes invisible.  Pere's and Steve's tracks from
Oslo and London log one point per second, so the map is full of
red pixels.  My logs typically have one point per 9 seconds.

> If it's logging too few points, then you may have to accept the
> restriction of limited logging time and set a higher logging rate.

No, that would fill up the unit's memory too fast.

> 1 trackpoint every 5 sec will give about 1 hr 20 mins of logging
> for a 1000 pt memory.

My unit's memory stores 10K track points, and I sometimes go for
four or five days between dumping tracks to my computer.


--
  Lars Aronsson ([hidden email])
  Aronsson Datateknik - http://aronsson.se

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Re: upload, applet

Immanuel Scholz
Hi,

> My unit's memory stores 10K track points, and I sometimes go for
> four or five days between dumping tracks to my computer.

My unit has a mode where it stores changes only too, resulting in very few
track points.

I filed an enhachment request to bugzilla:
http://www.openstreetmap.org/bugzilla/show_bug.cgi?id=31


Ciao, Imi.



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