qView
Introduction to qView
qView is a free and open-source image viewer designed to be minimal, fast, and space-efficient. It focuses purely on the image, eliminating clutter and toolbars for an unobstructed viewing experience.
Built with Qt and C++, qView supports a wide range of image formats including PNG, JPEG, BMP, TIFF, GIF animations, SVG, and WebP. Its responsive zooming, smooth panning, and rapid switching between files in a directory make it an ideal tool on the cluster for inspecting scientific plots, visual satellite products, and high-resolution figures. For more details, visit the official qView documentation.
Using qView with Modules
To use qView on the terrabyte HPC system, load the qView module with the following command:
module load qview
Once loaded, you can start qView in command-line mode by typing:
qView
Starting qView Graphically
qView can also be started graphically via the remote desktop on the terrabyte portal. To do this:
- Log in to the terrabyte portal.
- Open the remote desktop environment.
- qView is available from the App-Menu under Terrabyte Modules (or can be launched from the terminal with
module load qview; qView).
Usage Examples
Example 1: Open an Image
To quickly open an image file from the command line:
qView image.png
Example 2: Navigate and Zoom
Use the mouse scroll wheel to smoothly zoom in and out. Click and drag with the left mouse button to pan across high-resolution imagery. Navigate between images in the same directory using the arrow keys or Page Up / Page Down.
Example 3: View Image Information
Right-click on the image to open the context menu and select File Information (or press Ctrl+I) to view resolution, file size, color depth, and format details.
For additional usage instructions and configuration details, refer to the qView documentation.