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#!N
#!N #!Rdxnf DXNewField #!N #!N Function #!N #!N Creates
a new Field Object. #!N #!N Syntax #!N #!F-adobe-times-bold-r-normal--18* #include <dx/dx.h>
Field DXNewField() #!EF #!N #!N Functional Details #!N #!N The Field
Object is the fundamental Object in Data Explorer. It consists of
zero or more named components, usually Arrays, that are accessed with
#!F-adobe-times-bold-r-normal--18* DXGetComponentValue #!EF or #!F-adobe-times-bold-r-normal--18* DXGetEnumeratedComponentValue #!EF . Initially, the Field
has no components and is said to be empty; #!F-adobe-times-bold-r-normal--18* DXEmptyField
#!EF returns "1" for such Fields. Components are inserted in the
Field using the function #!F-adobe-times-bold-r-normal--18* DXSetComponentValue #!EF . #!N #!N There
are several predefined component names in Data Explorer. The component "positions"
generally refers to the points in the data space where the
field is sampled; "connections" are the relationships between the "positions" and
their interpolation; "data" refers to the values either at the "positions"
or for each whole "connections" element. #!N #!N The Field created
can be deleted with DXDelete. See #!Lmemng,dxall1023 h Memory Management #!EL . #!N #!N Note
that certain attributes on the components on a field are necessary
for proper processing of the field. For example, a "connections" component
must "ref" the "positions" component, and the "data" component must "dep"
either the "positions" or "connections" component (see #!Lcompatt3,dxall223 t Table 3 #!EL in IBM Visualization
Data Explorer User's Guide, and #!Ldatam,dxall1022 h Data Explorer Data Model #!EL ). #!N #!N It is
recommended that DXEndField be called on any field created when you
are finished adding components to it. DXEndField trims away allocated but
unused space in the component arrays, and will in addition, set
some default component attributes. See #!Ldxendf,dxall1201 h DXEndField #!EL for more information. #!N #!N
See #!Ldatmod,dxall197 h Understanding the Data Model #!EL in IBM Visualization Data Explorer User's Guide for additional
information on the Data Explorer data model. #!N #!N Return Value
#!N #!N Returns the Field or returns #!F-adobe-times-bold-r-normal--18* NULL #!EF and
sets an error code. #!N #!N See Also #!N #!N #!F-adobe-times-bold-r-normal--18*
#!Ldxemf,dxall1200 h DXEmptyField #!EL , #!Ldxgcv,dxall1228 h DXGetComponentValue #!EL , #!Ldxgecv,dxall1233 h DXGetEnumeratedComponentValue #!EL , #!Ldxscv,dxall1372 h DXSetComponentValue #!EL #!EF #!N #!N #!Lfieldsc,dxall1062 h Field Class #!EL
. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Ldxng,dxall1317 h DXNewGroup #!EL
#!N #!F-adobe-times-medium-i-normal--18* #!N
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