Hi HP-
Thanks for the confirmation on the fix/workaround. This has been a
perplexing issue, especially since we could not reproduce it on any of
our machines. It seems to be an issue with higher resolution (i.e. more
points) maps like the ones you mentioned. Sometimes an older graphics
driver works better than the latest version, but the easiest solution is
to install the plugin.
Best wishes to all for the coming New Year!
Don
HansPeter Roesli wrote:
Hi Don -
The good news is the workaround plugin does the trick!
I have noted the spider webs as well on my Linux notebook with an ATI
M76 (Radeon HD 2600 series) card. I remember having had this problem
already some versions ago with the same machine. At that time it was
just one of the system maps (a world map) that had the problem. You
resolved it then by replacing this map with a similar one that by chance
did not create the problem.
I have not dared to come up with the same problem again, thinking it was
linked somehow to my Linux installation and an upgrade I made more or
less at the same time the spider webs popped up again (getting ATI cards
to work in notebooks under Linux of any name can be tricky). Now I am
"relieved" that it is a more generic problem.
Just for your information from the maps I am usually using I get the
spider webs with World Coastlines and McIDAS World Country Outlines (a
map I grabbed from Tom Yoksas last June). World Country Outlines and
Europe do not produce spider webs.
cheers, HP
Don Murray wrote:
Hi All-
Beginning with the 2.7 release, some users have been reporting strange
map line displays on some systems. It seems to be related to newer
ATI video cards/drivers.
We do not have a permanent fix for this, but have a workaround for
those users experiencing the problem. If you are having this problem,
use the IDV's Plugin Manager (Tools->Plugin Manager menu) and install the
Bug Fixes->Spurious Map Lines Fix plugin. You will need to restart
the IDV after installing the plugin for the fix to take effect.
We are still investigating this issue and hope to have a permanent fix
in due time.
The IDV Development Team
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Don Murray UCAR Unidata Program
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