File:Scalar field.png

DescriptionScalar field.png	English: Abstract example of a scalar field.
Date	29 July 2012
Source	Own work
Author	Lucas Vieira
Permission (Reusing this file)	Public domainPublic domainfalsefalse I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions	Animation of a line integral over this field 3D version

The field[edit]

The field is a superposition of several 2D gaussian surfaces.

Define ${\displaystyle {\mbox{G}}(x,y)=e^{-(x^{2}+y^{2})}}$

Then, the field f used is given by the following function:

${\displaystyle f(x,y)=-{\tfrac {4}{10}}S(x,y)+{\tfrac {3}{2}}}$

Where S is the sum of the following:

${\displaystyle S(x,y)={\begin{aligned}\\{\mbox{G}}(2x,2y)\\-{\tfrac {8}{10}}{\mbox{G}}(2x+1.25,2y+1.25)\\+{\tfrac {1}{2}}{\mbox{G}}(2x-1.25,4y+1.25)\\-{\tfrac {1}{2}}{\mbox{G}}(3x-1.25,3y-1.25)\\+{\tfrac {7}{20}}{\mbox{G}}(2x+1.25,2y-1.25)\\-{\tfrac {1}{2}}{\mbox{G}}(x-1.25,3y+1.5)\\+{\tfrac {6}{5}}{\mbox{G}}(x+1.25,3y-1.85)\end{aligned}}}$

Evaluated from -1 to 1 in both x and y directions.

3D version[edit]