Did-Apps

Apps for teaching and learning

 

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  • Calculation of move- ment through energy

  • Numerical solution of
    the Lagrangian
    equations

  • Simpler models in comparison to Newton-II for more complex force relationships


Version 2.6.1 of March 29, 2021

Click on the logo of your operating system to download the appropriate version.
dl_Windows_logo_–_2012

Windows
Apfel

OSX / macOS
dl_Linux_300

Linux
Systemanforderungen

Windows Vista or higher
(Windows 8 or newer recommended)

OS X 10.9 (Mavericks) or higher
(macOS Sierra (10.12) or newer rec.)

Linux with Java 8 or higher
(Java 11 recommended for HiRes support)

Installationshinweise
  1. Start the installer "setupNewton-II.exe“ imin your download folderto installe the program on your current user account.
  2. Confirm the end user agreement and follow the instructions.
  3. Start "Lagrange.exe" by double-clicking.
NOTE: An installer for all users of your computer can be found here (Admin rights required).
  1. If not done automatically by the browser, open the "Lagrange.dmg" file in your download folder.
  2. After confirming the end-user agreement, drag the "Lagrange" program into the program folder or anywhere on your hard drive.
  3. Start "Lagrange" by double-clicking.
  1. Unzip the file "Lagrange_Jar.zip" in your download folder.
  2. Move the extracted folder to the desired location in your user account.
  3. Depending on the configuration of the installed Java, either start with a double click, via the context menu or via the terminal. To do this, switch to the Lagrange folder in the command line and start the program with "java -jar Lagrange.jar".


New in this version

  • NEW: It is now possible to define own functions directly in the modeling field (before use!)
  • IMP: Import for comparison values improved (incl. settings dialog for text files .txt & .csv) more file formats added: .csv, .labx, .labm, .mmd, .gambl
  • IMP: The update notification was improved
  • IMP: Optimizations have increased the computing speed (up to a factor of 2)
Version 2.6 (Mar, 08. 2021)
  • NEW: The variable names in the table of comparison values are now changeable.
  • NEW: A callable quick guide in PDF format is supplied.
  • NEW: Possibility to check the program version (via menu or automatically at program start).
  • NEW: Definitions of the comparison functions now appear in the printout.
  • NEW: Conditional variables can now also be defined in the model field.
  • NEW: "Show version history" in "About Lagrange ..."
  • IMP: The cumbersome selection of the dimension is now eliminated (simply define location and velocity variables).
  • IMP: Model calculation symbols now appear in the legend.
  • IMP: Drag with pressed middle mouse button moves the coordinate system.
  • IMP: Examples/templates in the defined folders can no longer be accidentally overwritten.
  • IMP: Comparison functions/values are now also displayed for axis orders containing terms.
  • IMP: WIN/LINUX use of system file selection dialogs (incl. query for existing files).
  • Adaptation to the previous improvements of the partner programs:
    • There is now the possibility to display multiple solutions in one chart.
    • Added self-definable table for the values of all variables used in the model.
    • Template files for quick graphic customization.
    • Scaling of the user interface including diagram representation.
    • The 3D diagrams have been significantly improved.
    • Integrated Java VM in the versions for Windows and macOS → no separate Java download needed anymore!
    • The axis labels can now be set more easily via context menu.
    • The partially displayed graphs are now directly accessible and has been improved.
    • The global application settings have been significantly enhanced.
    • The display of comparison functions and comparison values has been improved.
    • High resolution monitors (HiDPI or Retina) are now fully supported.
    • The resolution of printing has been improved.
  • Various bug fixes.
You can download the complete history here.