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<p>Hi Gerd</p>
<p>Thanks for all you work with regards routing islands!</p>
<p>a) Is there a way of finding out how many .if any. routing
islands were found given a certain length?</p>
<p>b) if NUM is negative is there any point in adding
--check-routing-island-len=NUM</p>
<p>Nick<br>
</p>
<pre class="moz-quote-pre" wrap=""> </pre>
<div class="moz-cite-prefix">On 04/11/2019 13:58, Gerd Petermann
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:AM0PR08MB52847ABD33FC52508BB3EF5D9E7F0@AM0PR08MB5284.eurprd08.prod.outlook.com">
<pre class="moz-quote-pre" wrap="">Hi all,
I think the work on the branch is almost done.
Attached is a patch to add documentation for the new option.
Please help to improve it:
--check-routing-island-len=NUM
Routing islands are small road networks which are not connected to other
roads. Typical case is a footway that is not connected to the main road
network. These islands can cause problems if you try to calculate a route
and Garmin selects a point on the island as a start. It will fail to
calulate the route even if a major road is only a few steps away.
When calculating the NOD data mkgmap detects the islands. The option
--check-routing-island-len=NUM can be used to tell mkgmap that islands with
a total length below NUM meters should not be written to NOD. The effect is
that the corresponding roads are visible as usual but they are not
routable.
A negative value for NUM means that mkgmap skips the island check.
ciao
Gerd</pre>
<br>
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