Map Plus vs Logarithmic Scale

The most powerful and versatile tool for viewing and editing custom maps, surveying, editing or managing mass of your geography data. ● You can use Map Plus as a professional GIS tool for geographic data gathering, editing, measuring, cartography, surveying, planning, online/offline viewing and many other management. ● You can also use Map Plus to help your outdoor activities and global travels, for trip planning, offline map downloading, track/photo/video recording, and sharing memories with friends. Besides common map features such as locating, searching, Map Plus provides many more special: ● Configuring, viewing and downloading any online maps of XYZ/WMS/WMTS patterns, or using scripts to configure more complex ones. ● Handling GIS vector file formats, such as Shape(SHP), TAB, GEOJSON, GML/GZ, AutoCAD DXF... ● Handling Common GIS file formats such as KML, KMZ, GPX, CSV, WPT.. Supported styles in KML/KMZ. ● Handling offline map file formats such as MBTiles, RMaps... ● On-map vector editing with finger drag-drop and magnetic snap. ● GPS Track Recording with auto-recovery and background mode support. ● Path Following with voice guidance for both user paths and searched direction routes. ● Displaying locations of photos and videos in your system photo albums. (no need to import) ● User data management with folders, sub-folders, layers, bulk operations, shortcuts, tags and fuzzy searches. Supports Advanced Search by using expressions with attribute conditions. ● Using Feature Class for bulk editing and managing similar (same class of) features and layers all together. Supports bulk Attributes Merge and Link Relationship Building between features of different classes. ● Conditional Style and Expression provide dynamic content rendering. ● Customizable pop-up panel for on-map picking items with HTML, JS and CSS support to make custom forms, layout and rich-formatted content. ● Handling coordinates in MGRS, UTM, and Plus Code. ● Photo Markup allows you draw markups on photo, such as arrows, texts, free-hand drawings. ● Browser Access allows you to access app's data or files from a desktop PC/Mac with a web browser wirelessly. ● Sharing or transferring data via Wi-Fi, Bluetooth, iCloud, SMS, Email, QR codes, Open-In, AirDrop or many other ways. ● Many more fantastic and free functions could not be fully descriped here, such as Guide Mark, Arrival Notification, Photo Mode, Map Level Adjust, Custom Icons, Photo/Video Attachments, Image Overlay, Text Overlay, Fast Editing, Distance/Perimeter/Area Measuring, Custom Time Zone, etc. User Manual: https://duweis.com/en/mapplus_guide.html Contact Us: support@duweis.com

This app may be for easy calculations of passage time with known average speed. It's good for sailing of mechanical ships to calculate passage time for final ETA.