[GraphHopper] What is in nodes file?

[Peter]

Hi John,

> I just found that it's not null

null is not possible here and 0 is a valid latitude value so an
exception would be the best. That is indeed a bit ugly, we should add a
check in the nodeAccess to avoid this. Would you mind to create an issue?

The problem why you can still access the indices even after max.nodes is
that graphhopper uses segments of 1MB and very likely there is still
space after the last node. And now that you get even reasonable values
for a latitude is probably because graphhopper creates the graph,
detects islands and then marks certain nodes to be deleted and moves the
last nodes into those gaps. It reduces the node count of course but
without explicitly clearing the last values.

Kind Regards,
Peter

On 19.05.2015 08:37, John Zhao wrote:
> Hi,
> I feel nodes should store all the tower nodes.
> I just found that it's not null for:
> nodeAccess.getLatitude(graph.getNodes()+10001)
> Inline image 1
>
> So, it's a little weird.
> what is that after the #nodes?
>
> Thanks!
>
>
> _______________________________________________
> GraphHopper mailing list
> GraphHopper at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/graphhopper

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/graphhopper/attachments/20150521/5bdee5e2/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 18218 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/graphhopper/attachments/20150521/5bdee5e2/attachment.png>