I think not - "unstable" is a tag to the latest unstable release 
version, "trunk" gets you the cutting edge of development.

Cheers --Kurt

On 9/25/2010 3:07 PM, Dejan Pangercic wrote:
> Hi Kurt, maybe also Ken,
> in the link to an overlay below the following version of
> point_cloud_perception is specified:
> https://code.ros.org/svn/ros-pkg/stacks/point_cloud_perception/tags/unstable.
>
> Is this now the same as:
> https://code.ros.org/svn/ros-pkg/stacks/point_cloud_perception/trunk ?
>
> cheers, D.
>
> On Sat, Sep 25, 2010 at 1:06 AM, Kurt Konolige
> <konolige@willowgarage.com>  wrote:
>> All -
>>
>> The vslam packages have moved around a bit lately, but have settled
>> down.  They now require unstable versions of opencv and pcl.  For your
>> convenience, there's an install file you can use to set up vslam
>> correctly, thanks to Patrick Mihelich.
>>
>> # Download vision_opencv, point_cloud_perception and vslam sources
>> $ rosinstall ~/vslam_unstable /opt/ros/cturtle
>> https://code.ros.org/svn/wg-ros-pkg/branches/trunk_cturtle/rosinstall_files/cturtle/vslam-cturtle-base-overlay-devel.rosinstall
>>
>> # Set up environment
>> $ . ~/vslam_unstable/setup.sh
>>
>> # Build
>> $ rosmake vslam_system
>>
>> This info will also be on the wiki page.
>>
>> Cheers --Kurt
>>
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>