【實用教育app】Mobile Gnuplot Viewer (free)|最夯免費app-綠色工廠好玩App

The Mobile Gnuplot Viewer is a frontend for the Gnuplot program. Gnuplot is a scientific plot program. With the Mobile Gnuplot Viewer the user can edit gnuplot scripts to generate 1d and 2d plots, execute the scripts, view and export the output of the Gnuplot program.

To run the Mobile Gnuplot Viewer app the Qt libraries (QtCore, QtGui and QtSvg) are needed. These Qt libraries are freely available (delivered by the ministro/necessitas project) and are automatically downloaded only once from the google play store when the app starts the first time.

The app brings a binary executable of the gnuplot program with it, which is used to generate a SVG output of the gnuplot script.

The purpose of Gnuplot is: show mathematical functions, fit theoretical functions to experimental data and calculate expressions. See Gnuplot homepage (http://www.gnuplot.info/) for more information about the Gnuplot program.

Gnuplot scripts can be created with this app and the SVG output will be shown as a plot in the app (see screenshots).

The app has four main pages:

- edit page: create, modify, save and load gnuplot scripts to generate a plot

- help page: enter help commands about gnuplot commands, help will be showed in the output page after pushing show button

- output page: show errors of script execution, help command output or fit results

- plot page: show the graphical output of the gnuplot script after pushing the run button

and some additional pages:

- file selection page: for loading, saving and erasing script files

- about page: show information about the application

Features of the free mobile gnuplot viewer are:

- create, modify, save, load and delete gnuplot scripts (text files) in an input page

- execute the gnuplot script and show the output as SVG graphic in an output page

- allow execution of help commands and show output in a text output page

- change font of text input and output fields

The (advanced) version of the mobile gnuplot viewer has some more features than this free version:

- syntax highlighting for gnuplot script input

- export of plot as bitmap files (supported formats: png, jpg, bmp, tiff)

- support copy/paste via application internal clipboard

- support of export of the text output window (to save output of fit to data)

The typical workflow for gnuplot running on a desktop operating system is different from the typical workflow on a mobile device.

Gnuplot uses a shell window to enter interactively text commands and an output window to show the grapical output simultaneously. On a mobile device like a smartphone or tablet computer this workflow is not suitable, because the user has only a small screen it is difficult to have more than one input/output area on the screen. To use the excelent gnuplot program on a mobile device I have written this app.

The typical workflow using this app is: enter a script to generate the gnuplot output in a text field on an input page and execute the script by pressing the run button.