Result-variables

gd1.pp makes its results accessible as symbolic variables. The names of these variables all start with @. The exact name can be found in the description of the sections of gd1.pp. There are some other variables as well that have not been described.

• @pi, @clight: These are the values of $\pi$ and of the velocity of light.

The following variables are defined as soon as a database has been specified:

• @nx, @ny, @nz: These contain the number of grid planes in the three coordinate directions.
• @x(i), @y(i), @z(i): These are the positions of the i.th gridplane.
• @xmin, @xmax, @ymin, @ymax: These are the extreme coordinates of the computational volume.

gd1.pp has a special variable @path. Its value is a command string that would enter the current section.