PyQtGraph vs. Python vs. ezPower POS vs. websockets Comparison Chart

PyQtGraph is a pure-python graphics and GUI library built on PyQt/PySide and NumPy. It is intended for use in mathematics/scientific/engineering applications. Despite being written entirely in python, the library is very fast due to its heavy leverage of NumPy for number crunching and Qt's GraphicsView framework for fast display. PyQtGraph is distributed under the MIT open-source license. Basic 2D plotting in interactive view boxes. Line and scatter plots. Data can be panned/scaled by mouse. Fast drawing for real-time data display and interaction. Displays most data types (int or float; any bit depth; RGB, RGBA, or luminance). Functions for slicing multidimensional images at arbitrary angles (great for MRI data). Rapid update for video display or real-time interaction. Image display with interactive lookup tables and level control. Mesh rendering with isosurface generation. Interactive viewports rotate/zoom with mouse. Basic 3D scenegraph for easier programming.

ezPower POS is available in three interface styles. Each operates with a bar code scanner, keyboard and mouse. Our Graphical Display interface allows you to use a Touch Screen monitor or a regular monitor with mouse. The graphical display makes ringing up sales fast and easy for you and your employees. Ring up sales by scanning a bar code, a click of the mouse or a touch of your finger (Touch Screen). Your items are automatically arranged by category. The Business Style display provides a more traditional and powerful method of ringing up sales. Simple one button view of 'Sales by Hour of Week'. A graph of total sales grouped by the hour of the Week. This can assist manpower planning and hours of operation efficiency. The 'Twelve Month Trend Graph' gives a wide perspective of profit margins and sales. Want to increase margins and see how it affects sales. It's as easy as one button.