2nd argument

compose

For all points in the specified point set, we compose the field value with the specified composition function.

mfedraw

Causes a binary dump of the specified fields to two files in the mfedraw input format. mfedraw is a graphics package for visualizing moving piecewise linear functions of two variables, such as those originally encountered in Moving Finite Elements. The files are named 'root1.bin' and 'root2.bin', where 'root' is the root file name argument. Because the graphics data are a function of two variables, you must supply

two orthonormal vectors (x1,y1,z1) and (x2,y2,z2) which specify the graphics coordinate axes.

scale

Scales the field values of the specified points.

volavg

For all the members of the point set and for all specified fields, replaces the point field values with values that represent the average of the field(s) over the control volumes associated with the points.

composition_function

Example, if 'i' is in the point set and asinh is the composition function, we have the assignment:

field(i) = asinh(field(i)).

asinh

log

ifirst, ilast, istride

integers

field_list

root_file_name

char*32

x1, y1, z1, x2, y2, z2

Two orthonormal vectors (x1,y1,z1) and (x2,y2,z2) which specify the graphics coordinate axes. More precisely, given 3D coordinates (x,y,z), the 2D graphic coordinates will then be (x*x1+y*y1+z*z1 , x*x2+y*y2+z*z2).

For example, the choice:

/x1,y1,z1/x2,y2,z2/ = /1.,0.,0./0.,1.,0./

causes the 'z' coordinate to be discarded while the 'x' and 'y' coordinates are unchanged.

scale_option

normalize

Multiply all the field values by factor. This has the effect of normalizing the field so that the new difference between the maximum and minimum values is equal to factor.

multiply

Multiply all the field values in the point set by factor.

divide

Divide all the field values in the point set by factor.

factor

real

(fieldmax-fieldmin), where 'fieldmax' and 'fieldmin' are the maximum and minimum values taken over the point set.

averaging_option

The averaging option specifies what kind of control volume is to be used. The affect of this process is to broaden and smooth the features of the field(s), similar to the effect of a diffusion process.

voronoi

Produces a diffusive effect independent of mesh connectivity. It requires that the mesh be Delaunay, or incorrect results will occur. (Not true for median.)

median

iterations

integer

Specifies a repeat count for how many times this procedure is to be performed on the field(s).