#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!CSeaGreen #!N  #!Rtcntln Contour 
Lines #!N #!EC #!N #!N Contour lines connect points of the 
same value in a 2-dimensional data set. The visual program in 
this example uses elevation data for the southeastern United States. #!N 
#!I0 #!N  #!F-adobe-times-medium-r-normal--18*   #!N #!N #!I30 #!N 1. Open and execute 
visual program .../Isosurface2D.net. #!N #!N The contour line that appears in 
the image has an isosurface value of 0 meters (sea level). 
#!N #!I30 #!N 2. Open the  #!F-adobe-times-bold-r-normal--18*   Isosurface #!EF configuration dialog 
box. #!N #!I30 #!N 3. In the  #!F-adobe-times-bold-r-normal--18*   value #!EF parameter 
field, change "0.0" to "20" and click on  #!F-adobe-times-bold-r-normal--18*   OK #!EF 
. The dialog box closes. #!N #!I30 #!N 4. Select  #!F-adobe-times-bold-r-normal--18*   
Execute on Change #!EF in the  #!F-adobe-times-bold-r-normal--18*   Execute #!EF pull-down menu 
and note the change in the contour line. #!N #!I30 #!N 
5. Reopen the Isosurface configuration dialog box and type "0 20" 
in the  #!F-adobe-times-bold-r-normal--18*   value #!EF parameter field. #!N #!I30 #!N 6. 
Click on  #!F-adobe-times-bold-r-normal--18*   OK #!EF . The image now consists of 
two contour lines. #!N #!I0 #!N #!EF #!N #!N #!N For 
more information, see Isosurface in IBM Visualization Data Explorer User's Reference. 
#!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N #!N  #!Ltstmln2,dxall45 h Streamlines  #!EL  #!N 
 #!F-adobe-times-medium-i-normal--18*   #!N 
