#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!N  #!Rtall875 Including Data Points in a Data 
Field #!N #!N #!N Consider a field containing position-dependent data and 
a "connections" component. If  #!F-adobe-times-bold-r-normal--18*   pointwise #!EF =0, after invalidating positions 
with data values outside the specified range, Include invalidates all connections 
that reference (include) an invalid position, and finally invalidates all positions 
not referred to by any valid connection. That is, no connection 
elements that include  #!F-adobe-times-medium-i-normal--18*   any #!EF invalid data values are retained--because 
the result of interpolation within such a connection element is not 
defined. For example, the following grid has valid data points (x), 
invalid points (i), and quad connections. #!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N 
x--------x--------i--------i--------x #!N | | | | #!N | | | | 
#!N | | | | #!N x--------x--------i--------i--------x #!N | | | 
#!N | | | #!N | | | #!N x--------x--------x--------x #!N 
| | | #!N | | | #!N | | | 
#!N x--------x--------x--------x #!EF #!N #!N #!EC The removal of invalid points 
leaves three invalid connection elements (the quads marked with "o") and 
two data positions that have no valid connection to any other 
data point: #!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N x--------x-------- x #!N | 
#!N | | o #!N | #!N x--------x-------- x #!N | 
| | #!N | | o | o #!N | | 
| #!N x--------x--------x--------x #!N | | | #!N | | | 
#!N | | | #!N x--------x--------x--------x #!EF #!N #!N #!EC The 
field returned by Include is represented by the grid shown below. 
#!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N x--------x #!N | #!N | #!N 
| #!N x--------x #!N | #!N | #!N | #!N x--------x--------x--------x 
#!N | | | #!N | | | #!N | | 
| #!N x--------x--------x--------x #!EF #!N #!N #!EC #!N #!N Example Visual 
Programs #!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N GeneralImport1.net #!N Thunder_cellcentered.net #!N SIMPLE/Include.net 
#!EF #!N #!N #!EC #!N #!N See Also #!N #!N  #!Lregrid,dxall920 h Regrid  #!EL  
#!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N #!N  #!Linput,dxall876 h Input  #!EL  #!N 
 #!F-adobe-times-medium-i-normal--18*   #!N 
