The terminal says that gui is on, but i cn't find GUI

[shubhraD]

I assured that ptam is correctly installed and also in my PtamFixParams.yaml file, the gui:True is set.
As a result, when i launch ptam, it says GUI is on but nothing is reflected on my screen, though rqt_reconfigure gives me the GUI.

(this doubt can be silly but please reply)

[haoweix]

You might need to check whether you have your camera opened. And change the launch file to make ptam.launch subscribe the topic which your camera published.

[liu-zg15]

I think you need run your camera node first. Then map the node with calibration node.