This is a simple C program that reads data from a file and outputs a vector field in the form <x_position> <y_position> <magnetic_induction_x> <magnetic_induction_y> to a file.
It can also output a gradient in the form <x_position> <y_position> <magnetic_induction>.
The command prompt format is like this:
magneticinduction2d.exe [command] <input_file> <output_file>
Here the command can be -h for help, -vf for outputting vector field and -g for gradient.
The input and output files can be relative or absolute paths.
The input file needs to be in the form:
<size of simulation vector field> <vector field precision step> <relative magnetic permittivity of space> <number of conductors>
<x position of conductor 1> <y position of conductor 1> <current intensity of conductor 1>
<x position of conductor 2> <y position of conductor 2> <current intensity of conductor 2>
...
<x position of conductor n> <y position of conductor n> <current intensity of conductor n>
The current intensity is taken, by convention, to be positive when the conductor is coming out of the vector field and negative when it is going into the vector field. Example of input file:
30 0.1 1 2
-1.5 0.5 10000
-1 0 -10000
The output file can be viewed in gnuplot or similar programs.
In gnuplot you can use the following command to plot the resulting vector field:
plot "[Path to output file]" using 1:2:3:4 with vectors head filled
For the gradient you can use the command:
plot "[Path to output file] with image"
Additional information is in the .docx document.