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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #!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
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