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The G4GRID Procedure |
GRID x*y*z=variable< ...variable-n> </ <grid-options>>; |
Options |
Options affect all output produced by the GRID statement. If you use any of these options, separate them from the grid request with a slash (/). If you do not use any options, omit the slash.
n n ...n n,n, ... ,n n TO n <BY increment> <n ... n> n,n ... ,n TO n <BY increment> <n, ... ,n>
The distance of the new points from the end, which is the size of each "border," is the width of the first and last coordinate pair, respectively. All points that fall within the new coordinate boundaries are used in the interpolation. The size of the output grid is not affected.
If XAXIS=, YAXIS=, or ZAXIS= is specified, PROC G4GRID must assume that the spacing between output grid points is not equal. As a result, special processing must occur for each correction pass.
If none of the above options are specified or the UNIFORM option is specified, the procedure assumes all points in the output grid are equally spaced and omits the special processing. If you specify one of the above options and the output grid points are known to be equally spaced, specifying the UNIFORM option may slightly speed processing. If, however, the output grid points are unevenly spaced to a significant extent, and the UNIFORM option is specified, erroneous results can occur. UNIFORM is the default unless XAXIS=, YAXIS=, or ZAXIS= is specified.
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