Computing: Free Pascal Programming

Drawing of mathematical and other functions using Gnuplot.


Download FunctionPlotter desktop application (Windows 64bit) Download FunctionPlotter source code (Lazarus/Free Pascal)

Description: "FunctionPlotter" is a Lazarus/Free Pascal application that can be used to draw simple graphs (functions). In fact, the drawing is done by the freeware program Gnuplot (that you'll have to download and install in order to use "FunctionPlotter"). The user can enter the function as a simple string, as for example: sin(x). Other graph properties or parameters can also be set, in particular the range of the x- and y-axis values. The Gnuplot commands used to generate the graph can be saved as PLT file. The graph itself can be saved as PNG graphics file.

Free Pascal features: Running command line programs from within a Free Pascal GUI application. Running Windows Cmd commands from within a Free Pascal GUI application. Usage of the "Save" dialog. Using TImage components to display graphics files.

Screenshots:

Function plotter desktop application: Graph parameters
 
Function plotter desktop application: Graph display
 

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