Hi Axel and all
I have experienced something similar with some ECW files, they are well and
very fast shown in QlandkarteGt at every zoom level, but they only appears
at a very close zoom level in QMS.
In the past I noticed about this here and Oliver posted this answer:
Hi Mitxel,
>
>
>
> (...)
>
>
>
> If you have a layer of raster maps reading the files and scaling the
> content to an upper zoomlevel is getting more and more resource intensive
> the more you zoom out. To avoid endless map loading, QMS will skip the map
> if the effort to display it is getting too large.
>
>
>
> However if QMS detects overview levels attached to the map it will use
> them. gdaladdo is the tool to do so. Things are getting a bit more
> difficult for insane large map collections. gdaladdo will create an
> overview file over all maps combined in the vrt. That might get too large.
> In this case you have to create single overview files and combine them in a
> vrt.
>
>
>
> HTH
>
>
>
> Oliver
>
this is a pity for me because I lost some zoom levels in QMS that were very
useful ( I was able to read all the texts in the map at that levels ) and
IMHO QLGT was more flexible and useful with this..... but I will survive
;-)
To Know if your problem is conceirning the same you can try this:
1- in Qlandkartegt: load the same VRT file( Archive-> load map) ¿can you
see it at every zoom level?
2-In QMS: once the VRT is active, first of all make sure that the view is
in the area covered by your VRT/greotif map. To do so you can load a wp or
track and zoom to it. Then try to make zoom IN , to get closer and closer,
and the map should appear at a certain zoom level.
Hope it helps
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
Qlandkartegt-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/qlandkartegt-users
