remapping in rqt_plugins

Is that possible? If I launch an rqt node with tag that does not appear to work... Is it supposed to? Update with respect to @Dirk Thomas Comment: Basically, I wanted an image_viewer with a fixed topic (for later adding some fancy overlays and so on...). I took the rqt_image_view (indeed C++!) as start point removed the topic spinner and related functions and subscribed the image_transport from a fixed topic. Works perfectly if the "hard-coded" topic exists. However, I did not manage to remap the topic in a launch file. So far i tried 2 things (Both work with "hard-coded" topic but not with remap): 1) Remapping in launch file using the phyton script for stand alone launching my_plugin: #!/usr/bin/env python import sys from rqt_gui.main import Main main = Main() sys.exit(main.main(sys.argv, standalone='my_plugin')) Launch file: 2) Remapping for rqt_gui and load my_plugin into rqt_gui Edit 28.08.2014: Anyone?