Heatmap not working after update to 1.1.9

[piotrvidal]

Describe the bug
Heatmap not showing up when activated in the "display" menu.

To Reproduce
Steps to reproduce the behavior:

1. Start program with command-line 'trex'
2. Open an already converted video (a video converted with 1.1.9 version)
3. Click on display > heatmap
4. No heatmap appears

If possible, please also include the full terminal output as a file attachment:
[10:13:58] Property('gui_show_heatmap') = true
[10:13:58] Creating a grid of size 1x1 (for image of size 1280x720)
[10:13:58] -------------------
[10:13:58] STATS (frame 0, [])
Grid::clear: 0.000984ms
Grid::fill: 0.949012ms
Heatmap::update_data(): 1.3736ms

[10:13:58]

A grid of size 1x1 for image size 1280x720 seems weird?

Expected behavior (if it is not a simple crash)
The heatmap appears over the video, like in 1.1.6 version.

Computer (please complete the following information):

• Operating system: Parrot OS
• Build hash: 4ce4be1
• Terminal used: Mate Terminal

[piotrvidal]

To add further info on this issue:

On 1.1.6, when activating the heatmap, the terminal outputs:

[06:33:31] Creating a grid of size 2048x2048 (for image of size 1280x720)

[mooch443]

Took some time, but I added a fix to the development branch. You can try it out in the trex-beta channel (e.g. conda create -n beta -c trex-beta trex), if you like. Not sure if it is fixed since it seems to be particular to this resolution somehow, but let's hope that it is :-) Thanks for reporting!