On this page you specify how the vectors should be scaled and the interval between the individual vectors.
Automatic scaling is a quick way to scale the vectors. You simply give the length (in the unit of average node distance) of the longest vector on the plot. The individual plots in a series are scaled differently. When using automatic scaling, vectors are never distorted. Therefore, when you change scaling in one direction, the scaling in the other direction is automatically changed accordingly.
User specified scaling gives you full control of the vector scaling. You specify the vector length (again in average node distance) corresponding to typically one SI unit. The individual plots in a series are therefore given the same scaling. User specified scaling can also be used for amplifying the vector length in one direction (distortion).
If the density of vectors is high, you can opt to reduce the number of drawn vectors by one of two methods:
· Box based reduction
You divide the whole area in a number of smaller boxes and specify the maximum number of vectors to draw within each box. The box size is specified as a percentage of the whole area.
· Interpolation to structured mesh
You specify the size of a structured mesh. One vector is drawn within each structured mesh element.