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<p>Interestingly I don't get the error message.</p>
<p>I click on 3d View (available on oregons but not GPS64)<br>
</p>
<p>then get this</p>
<p><span style="color: rgb(0, 0, 0); font-family: monospace;
font-size: 15px; font-style: normal; font-variant-ligatures:
normal; font-variant-caps: normal; font-weight: 400;
letter-spacing: normal; orphans: 2; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
text-decoration-style: initial; text-decoration-color: initial;
display: inline !important; float: none;"><a class="moz-txt-link-freetext" href="http://files.mkgmap.org.uk/download/373/oregon6003dview.jpg">http://files.mkgmap.org.uk/download/373/oregon6003dview.jpg</a></span></p>
<br>
<div class="moz-cite-prefix">On 16/12/2017 10:12,
<a class="moz-txt-link-abbreviated" href="mailto:andreas.schmidt.hetschbach@t-online.de">andreas.schmidt.hetschbach@t-online.de</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:340078431.301.1513419173423.JavaMail.fasd@asyncweb02.aul.t-online.de">
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<div class="WordSection1">
<p class="MsoNormal">HI,</p>
<p class="MsoNormal">not sure if we meant the same thing:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Map displayed with hillshading (Looks ok):</p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><a
href="http://files.mkgmap.org.uk/download/370/2017-12-16_10-57-56_194.jpeg"
moz-do-not-send="true">http://files.mkgmap.org.uk/download/370/2017-12-16_10-57-56_194.jpeg</a>
</li>
</ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Menu item 3d-view</p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><a
href="http://files.mkgmap.org.uk/download/371/2017-12-16_10-58-44_277.jpeg"
moz-do-not-send="true">http://files.mkgmap.org.uk/download/371/2017-12-16_10-58-44_277.jpeg</a></li>
</ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Error</p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><a
href="http://files.mkgmap.org.uk/download/372/2017-12-16_10-58-56_743.jpeg"
moz-do-not-send="true">http://files.mkgmap.org.uk/download/372/2017-12-16_10-58-56_743.jpeg</a></li>
</ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Andreas</p>
<p class="MsoNormal">Gesendet von <a
href="https://go.microsoft.com/fwlink/?LinkId=550986"
moz-do-not-send="true">Mail</a> für Windows 10</p>
<p class="MsoNormal"><o:p> </o:p></p>
<div
style="mso-element:para-border-div;border:none;border-top:solid
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="border:none;padding:0cm"><b>Von: </b><a
href="mailto:osm@pinns.co.uk" moz-do-not-send="true">osm@pinns</a><br>
<b>Gesendet: </b>Freitag, 15. Dezember 2017 20:34<br>
<b>An: </b><a href="mailto:mkgmap-dev@lists.mkgmap.org.uk"
moz-do-not-send="true">mkgmap-dev@lists.mkgmap.org.uk</a><br>
<b>Betreff: </b>Re: [mkgmap-dev] DEM File Format and mkgmap</p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p>Hi Andreas</p>
<p>I have been able to make it work (tapping on the arrows) on my
Oregon 600 but its very sluggish and at one stage it just
freezes.</p>
<p>I think you are right ; there is an issue.<br>
</p>
<br>
<div class="moz-cite-prefix">On 15/12/2017 19:30, Andreas Schmidt
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BA9222B8-CD3F-4134-A17D-1655E24253A8@mobileclient.telekom.de">
<meta http-equiv="Context-Type" content="text/html;
charset=utf-8">
<span>Hi Frank,<br>
<br>
with ypur great tool I am able to <br>
<br>
- have3d - View in basecamp<br>
- hillshading on Oregon600<br>
<br>
Thats really amazing !<br>
<br>
In Oregon there is also a menu item „3D“. Even if the map
Shows Up hillshading,, this function doesnt work. Oregon
complains that the map does Not have enough hight information.
<br>
<br>
Could you make it work on your device?<br>
<br>
Andreas <br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<p id="claim">Gesendet mit der <a
href="http://www.t-online.de/service/redir/emailmobilapp_ios_smartphone_footerlink.htm"
moz-do-not-send="true">Telekom Mail App</a></p>
<br>
<br>
-----Original-Nachricht-----<br>
Von: Frank Stinner <a class="moz-txt-link-rfc2396E"
href="mailto:frank.stinner@leipzig.de"
moz-do-not-send="true"><frank.stinner@leipzig.de></a><br>
Betreff: Re: [mkgmap-dev] DEM File Format and mkgmap<br>
Datum: 08.12.2017, 09:27 Uhr<br>
An: <a class="moz-txt-link-abbreviated"
href="mailto:mkgmap-dev@lists.mkgmap.org.uk"
moz-do-not-send="true">mkgmap-dev@lists.mkgmap.org.uk</a><br>
Hi,<br>
<br>
i must confess, i have never tried to decompilea garmin dem
map. I have only playing with bit-patterns and then lookingfor
the result in mapsource. But i'm sure, that we have different
algorithmsor one algorithm with different special cases.<br>
<br>
My description in the pdf is (only) validfor the „TOPO
Deutschland v3“. Please see the pages 3 and 4. There area few
"unknown values". <br>
<br>
For example see "Codierungstyp"(coding type) for a 64x64 tile.
I found in different garmin maps valuesfrom 0 to 6. 0 is the
standard. It seems to be, that the coding type haveno
influence of the algorithm, but i'm not sure. Presumable is
this typeonly important for different interpretations of the
height values. BuildDEMFileuse type 1 for areas with "unknown
height". This is in this casethe interpretation for
height=maxvalue.<br>
<br>
Unknown is also the byte on position 0x25in the dem header. In
the „TOPO Deutschland v3“ there we have 0x1 buti have also
seen in other maps 0x0.<br>
<br>
Interesting is also the word in 0x12 in evereyzoomlevel
definition (see page 26 in the pdf). In the „TOPO
Deutschlandv3“ thats all 0. But i have also found 0x100,
0x200, 0x400. Perhaps akind of multiplier for heights?<br>
<br>
Very important is the bytes 0x0 (and 0x1)in everey zoomlevel
definition. In the „TOPO Deutschland v3“ 0x0 is ever0. 0x1
seems to be a number as "link" to a maplevel. But i
don'treally understand the sense ot that. We can have 6
maplevels and we cansay the maplevel 2 and 4 are without
dem's?<br>
<br>
In a little demo map from garmin i have see"twins" of
zoomlevelnumbers, one with value 0 on 0x0 and onewith 1 on
0x0. Perhaps 0x0 is for different and optimized output on
pcand gps?<br>
<br>
I think, a decompiler with the algo frommy pdf is working only
for this special case:<br>
0x15 in dem header should be 0 (meter)<br>
0x25 in dem header should be 1<br>
0x0 and 0x12 in every zoomlevel should 0<br>
<br>
By the way, have anybody see a dem with valuesin foot? The
values in such a dem should be greater then for a dem in
meter.Have anybody height values with a precision of foot? The
conversion fromfoot to meter would be a first compression
step. If garmin really use "foot",then a different/better
compression algo make sense.<br>
<br>
<br>
Frank</span> <br>
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