plotXpose vs Ufo Capture

Plot functions, derivatives & integrals. Explore frequency analysis and Digital Signal Processing (DSP) concepts through graphs. Solve equations numerically using a variety of methods. plotXpose app is a companion to the book Mathematics for Electrical Engineering and Computing by Mary Attenborough, published by Newnes, 2003. The app allows you to define and plot a General Function made up by a composition of any of the following standard operations and functions: -, +, *, / , ^(power), sin, cos, tan, ln (log base e), log (log base 10), arcsin (inverse sine), arccos (inverse cos), arctan (inverse tangent). In addition a Square Wave or Triangular Wave can be defined. You can Open a previously saved function from a file. The function is defined as a function of t (often representing time). Initially the function is defined for values of t between t = -5 and t = 5, at a sampling interval of 0.01, and the y-axis is displayed over the full range for y. These values can be changed using Settings. The function is displayed and also the exact Derivative. The Integral can also be viewed on the same axes and the Frequency spectrum is viewed in a separate tab. o determine values on the graph use View to display a grid or Display Position, in which, tapping on the function, its derivative or integral, displays the coordinates at that location. You can Save to a file any one of the function, derivative or integral. These values can be read back into plotXpose via the Open menu item. Equation solving can be performed using the Zero Find option with various numerical methods. The sequence of values found is displayed on the screen and can be saved to a file. Tangent Mode can be used to display tangents to to any of the defined curves along with the gradient and the equation of the tangent. There are some problems and investigations on the companion website to accompany Mathematics for Electrical Engineering and Computing for which this app can be used. In addition many of the Exercises in other chapters (e.g. graph sketching, numerical integration, sequences) can be checked with the aid of this app. Some extra suggested Problems are given on the plotXpose help website.

UFO Capture — See Beyond the Visible Harness real‑time motion detection and intelligent recording to uncover anomalies in the sky. The human eye typically sees only within the 400–700 nm spectrum; it cannot perceive infrared (beyond red) or ultraviolet (beyond violet). UFO Capture enhances visibility with specialized filters and modes so you can record details your eyes often miss—effortlessly and consistently. Key Highlights - Automatic motion detection with precise on‑screen tracking - Auto start/stop recording triggered by activity - Visual modes that reveal hidden detail: RGB, Black & White, Infrared, Ultra Violet, Night Vision, CMYK - Zoom, tap‑to‑focus, and exposure control for crisp captures - External stream support (HTTP/HTTPS IP/Wi‑Fi cameras) - Organized gallery to review, share, and manage recordings - Sound notifications for motion and recording status - Screen wake management for long observation sessions Why It Matters - Human vision is limited to ~400–700 nm; many phenomena lie outside this range - Infrared and ultraviolet modes help surface subtle contrasts and thermal‑like cues - Enhanced filters boost visibility in low light and complex atmospheric conditions - Capture anomalies the eye may overlook, and analyze them later in detail How It Works - Choose your source: device camera or IP/Wi‑Fi stream - Pick a color mode tailored to your scene or goal - Arm motion detection to let the app automatically record when activity occurs - Recording stops after inactivity; clips are saved locally and organized in the gallery Capture Modes - RGB: Natural color rendering - Black & White: High‑contrast luminance for texture and shape - Infrared: Enhanced red‑channel emphasis to expose subtle heat‑like patterns - Ultra Violet: Violet‑range emphasis to highlight fine atmospheric details - Night Vision: Low‑light enhancement for dark scenes - CMYK: Color separation to reveal atypical color signatures Controls & Tools - Pinch‑to‑zoom and discrete zoom buttons - Tap‑to‑focus with exposure point control - Motion overlay for object tracking feedback - One‑tap manual record/stop alongside auto‑recording Integrations - IP/Wi‑Fi stream playback via URL - Local notifications for motion and recording events - In‑app gallery for quick review and sharing Permissions & Requirements - Camera and microphone permissions are required - Works best on physical devices with rear cameras - For external cameras, provide a valid HTTP/HTTPS stream URL Pricing -"You can use the app 5 times for free. After that, you will be directed to the purchase screen." - Unlock full access via in‑app purchase Elevate your skywatching: reveal, record, and review phenomena beyond the eye’s limits with UFO Capture. Eula: https://raw.githubusercontent.com/dbeyzade/ufo-capture/main/EULA.md