#!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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