<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1420488230913_2837">Even in het Nederlands als ik mag.</div><div id="yui_3_16_0_1_1420488230913_2836"><br></div><div id="yui_3_16_0_1_1420488230913_3092" dir="ltr">De gemeentes zijn verantwoordelijk voor 'hun' GRB. Ik vermoed dat alle gemeentes de opbouw van hun GRB uitbesteed hebben aan landmeters. Misschien dat updates (zie bv. <a id="yui_3_16_0_1_1420488230913_3311" href="https://www.agiv.be/news/2014/december/update-grootschalig-referentiebestand-20-12-2014">https://www.agiv.be/news/2014/december/update-grootschalig-referentiebestand-20-12-2014</a>) door de gemeentes zelf aan het GRB worden toegevoegd. Maar het is dus perfect mogelijk dat de kwaliteit in de ene gemeente minder is dan in een andere gemeente. Maar ze zouden eigenlijk toch allemaal moeten voldoen aan de eisen die door AGIV zijn opgelegd.<br></div><div id="yui_3_16_0_1_1420488230913_3916" dir="ltr">De gebouwen in het GRB zijn gebaseerd op topografische opmetingen op terrein en op luchtfoto's. Waar mogelijk zijn de voorgevels opgemeten: die zouden dus behoorlijk correct moeten zijn. De rest is gebaseerd op de luchtfoto's. Zo krijg je soms vreemde toestanden van recente gebouwen waarvan de voorgevel is opgemeten, maar het achterliggende stuk grotendeels ontbreekt omdat ze niet op de luchtfoto's staan/stonden. De huizen in Beekstraat 55-61 zijn waarschijnlijk zo'n geval.</div><div id="yui_3_16_0_1_1420488230913_5809" dir="ltr"><br></div><div id="yui_3_16_0_1_1420488230913_5810" dir="ltr">Groetje,</div><div id="yui_3_16_0_1_1420488230913_5811" dir="ltr"><br></div><div id="yui_3_16_0_1_1420488230913_5812" dir="ltr">StijnRR<br></div><div id="yui_3_16_0_1_1420488230913_2792"><span></span></div><br> <div id="yui_3_16_0_1_1420488230913_2811" style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1420488230913_2810" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1420488230913_2809" dir="ltr"> <hr id="yui_3_16_0_1_1420488230913_2808" size="1"> <font id="yui_3_16_0_1_1420488230913_2812" size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Marc Gemis <marc.gemis@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> OpenStreetMap Belgium <talk-be@openstreetmap.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, January 5, 2015 8:23 PM<br> <b id="yui_3_16_0_1_1420488230913_5824"><span id="yui_3_16_0_1_1420488230913_5823" style="font-weight: bold;">Subject:</span></b> Re: [OSM-talk-be] WMS (aerial) imagery covering Belgium, now conveniently packaged for adding it to JOSM<br> </font> </div> <div id="yui_3_16_0_1_1420488230913_2815" class="y_msg_container"><br><div id="yiv9445666263"><div id="yui_3_16_0_1_1420488230913_2814"><div id="yui_3_16_0_1_1420488230913_2813" dir="ltr">I assume the quality depends on the GIS person adding the data. If he/she is less motivated/less capable/... the quality will be less.<div id="yui_3_16_0_1_1420488230913_2835"><br clear="none"></div><div id="yui_3_16_0_1_1420488230913_2816">The example that you give seems like the classic case where the building was not yet finished when it was traced. Then they always draw a small rectangle along the front side.</div><div id="yui_3_16_0_1_1420488230913_5117"><br clear="none"></div><div id="yui_3_16_0_1_1420488230913_5813">regards</div><div id="yui_3_16_0_1_1420488230913_2817"><br clear="none"></div><div id="yui_3_16_0_1_1420488230913_5116">m</div></div><div id="yui_3_16_0_1_1420488230913_2818" class="yiv9445666263gmail_extra"><br clear="none"><div class="qtdSeparateBR"><br><br></div><div class="yiv9445666263yqt2699513444" id="yiv9445666263yqtfd86117"><div id="yui_3_16_0_1_1420488230913_2819" class="yiv9445666263gmail_quote">On Mon, Jan 5, 2015 at 7:56 PM, Sander Deryckere <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:sanderd17@gmail.com" target="_blank" href="mailto:sanderd17@gmail.com">sanderd17@gmail.com</a>></span> wrote:<br clear="none"><blockquote id="yui_3_16_0_1_1420488230913_2824" class="yiv9445666263gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div id="yui_3_16_0_1_1420488230913_2823" dir="ltr"><div id="yui_3_16_0_1_1420488230913_2822"><div id="yui_3_16_0_1_1420488230913_2821"><div id="yui_3_16_0_1_1420488230913_2820">I think Pablo also helped in some pieces of the GRB: <a id="yui_3_16_0_1_1420488230913_2825" rel="nofollow" shape="rect" target="_blank" href="http://www.geopunt.be/kaart?viewer_url=http%3A%2F%2Fmaps.geopunt.be%2Fresources%2Fapps%2FGeopunt-kaart_app%2Findex.html%3Fid%3Dff8080814a6e1332014abb6b94c80023">http://www.geopunt.be/kaart?viewer_url=http%3A%2F%2Fmaps.geopunt.be%2Fresources%2Fapps%2FGeopunt-kaart_app%2Findex.html%3Fid%3Dff8080814a6e1332014abb6b94c80023</a><br clear="none"><br clear="none"></div>Is it normal that quality differs from municipality to municipality? In Staden, I haven't seen any problem with GRB. But in Roeselare, I often bump into problems like these. Buildings with a completely clear form (however, they're often quite new, so perhaps drawn without aerial pics), but drawn completely wrong in GRB.<br clear="none"><br clear="none"></div><div id="yui_3_16_0_1_1420488230913_5814">Up until now, I've avoided the old centre of the town, because the building layouts are way too complicated there. It might get easier when we have access to the GRB.<br clear="none"></div><div><br clear="none"></div>So yes, an automated import won't work, but being able to use it opens up a lot of perspectives, so thanks to anyone involved.<br clear="none"><br clear="none"></div>Regards,<br clear="none">Sander<br clear="none"></div><div id="yui_3_16_0_1_1420488230913_2829" class="yiv9445666263HOEnZb"><div id="yui_3_16_0_1_1420488230913_2828" class="yiv9445666263h5"><div id="yui_3_16_0_1_1420488230913_2827" class="yiv9445666263gmail_extra"><br clear="none"><div id="yui_3_16_0_1_1420488230913_2826" class="yiv9445666263gmail_quote">2015-01-05 15:35 GMT+01:00 Gilbert Hersschens <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:ghersschens@gmail.com" target="_blank" href="mailto:ghersschens@gmail.com">ghersschens@gmail.com</a>></span>:<br clear="none"><blockquote id="yui_3_16_0_1_1420488230913_2831" class="yiv9445666263gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div id="yui_3_16_0_1_1420488230913_2830" dir="ltr">In comparison to Bing even Picasso wins ;-)</div><div id="yui_3_16_0_1_1420488230913_2834"><div id="yui_3_16_0_1_1420488230913_2833"><div id="yui_3_16_0_1_1420488230913_2832" class="yiv9445666263gmail_extra"><br clear="none"><div id="yui_3_16_0_1_1420488230913_5115" class="yiv9445666263gmail_quote">On 5 January 2015 at 15:30, Glenn Plas <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:glenn@byte-consult.be" target="_blank" href="mailto:glenn@byte-consult.be">glenn@byte-consult.be</a>></span> wrote:<br clear="none"><blockquote id="yui_3_16_0_1_1420488230913_5114" class="yiv9445666263gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">In my experience, the outlines and building shapes I've seen in GRB are<br clear="none">
like 10 times better than all the work that exists using bing and other<br clear="none">
sources.<br clear="none">
<br clear="none">
A one on one copy would be silly, but if you bring it all together,<br clear="none">
agiv/grb and osm data, it helps to make sense of what you are looking<br clear="none">
at. Also it is conclusive usually when new buildings replace older.<br clear="none">
It's the best source, I don't really care if the house isn't exactly as-is.<br clear="none">
<br clear="none">
The housenumber inports will take years, but it's fine as it is as tons<br clear="none">
of intelligent choices and conclusions, mistakes and other uglynes needs<br clear="none">
to be fixed too. And it all helps, if you overlay them with some<br clear="none">
transparacy adding GRB would be an awesome tool.<br clear="none">
<br clear="none">
I've been doing housenumer entries for weeks now, grb layer would<br clear="none">
defenitely be of good help. But never a dumb copy.<br clear="none">
<span><font color="#888888"><br clear="none">
Glenn<br clear="none">
</font></span><span><br clear="none">
On 05-01-15 15:05, Gilbert Hersschens wrote:<br clear="none">
> Guys,<br clear="none">
><br clear="none">
> Don't get overly exited about the building shapes. The quality of those<br clear="none">
> shapes is quite variable. For free standing houses they are OK - in some<br clear="none">
> cases even excellent, but for urban areas they are not very useful,<br clear="none">
> certainly not as a source for import. I have been using those shapes for<br clear="none">
> quite a while for comparison in cases where severe projection distortion<br clear="none">
> and strong shadows gave me a hard time to figure out the shape of a<br clear="none">
> particular building and in many cases the shapes in GRB were not better<br clear="none">
> or even worse than my own "guesstimation".<br clear="none">
> They're OK for "second opinions" but I would never use a tool to import<br clear="none">
> those shapes.<br clear="none">
> Just my 2 cents.<br clear="none">
<br clear="none">
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