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#!N 
#!CSeaGreen #!N  #!Rall37 
Example 1 #!N #!EC This example illustrates the importation of a 
simple data set consisting of a single variable on a 5 
* 5 * 5 grid. #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   #!N #!N 
#!I30 #!N 1. First enter: #!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N dx 
-prompter #!EF #!N #!N #!EC You can also access the Data 
Prompter by choosing  #!F-adobe-times-bold-r-normal--18*   Import Data #!EF from the Data Explorer 
Startup window. #!N #!N When the initial dialog box appears (see 
 #!Ldp115,dxall160 f Figure 15  #!EL  ), choose Grid or Scattered File, and then type the 
path name /opt/local/dx/samples/tutorial/external.data. into the  #!F-adobe-times-bold-r-normal--18*   Data file name #!EF field 
at the top of the dialog. #!N #!I30 #!N 2. Press 
the  #!F-adobe-times-bold-r-normal--18*   Describe Data #!EF button to bring up a window 
which allows you to describe the data. #!N #!I30 #!N 3. 
You can now view the file by clicking on the ellipsis 
button (  #!F-adobe-times-bold-r-normal--18*   ... #!EF ) to the right of the 
file-name field and selecting  #!F-adobe-times-bold-r-normal--18*   Browser #!EF from the pull-down menu. 
The  #!F-adobe-times-bold-r-normal--18*   File Browser #!EF window appears. (If necessary, move this 
window so that you can view it and the Data Prompter 
window at the same time.) It is also possible to browse 
the data file from the initial prompter window once the file 
name has been entered. #!N #!I30 #!N 4. The first three 
lines of the file may look like data, but they are 
header information, so click on the  #!F-adobe-times-bold-r-normal--18*   Header #!EF toggle button 
and then on  #!F-adobe-times-bold-r-normal--18*   # of bytes #!EF to the right 
(now activated). #!N #!I30 #!N 5. Select  #!F-adobe-times-bold-r-normal--18*   # of lines 
#!EF and enter the value "3" in the associated field. #!N 
#!I30 #!N 6. The first line of the header gives the 
grid dimensions as 5 5 5, so enter these numbers in 
the first three  #!F-adobe-times-bold-r-normal--18*   Grid size #!EF fields. Note what happens 
in the  #!F-adobe-times-bold-r-normal--18*   Grid positions #!EF fields as each number is 
entered. (You can use the tab key or the mouse to 
move the cursor from one field to the next.) #!N #!I30 
#!N 7. For  #!F-adobe-times-bold-r-normal--18*   Data format #!EF , ensure that  #!F-adobe-times-bold-r-normal--18*   
ASCII (text) #!EF is selected. #!N #!I30 #!N 8. Next you 
need to specify whether the data is in row or column 
majority order. In this particular file, the data is in row 
majority, so select that button. #!N #!I30 #!N 9. Position the 
cursor in the first  #!F-adobe-times-bold-r-normal--18*   origin, delta #!EF field, hold down 
the left mouse button, and drag the cursor over the numbers 
there to highlight the field before releasing the mouse button. The 
default values and the highlight bar will disappear as soon as 
you start typing. #!N #!I30 #!N 10. The origin of the 
grid is [1.0, 3.0, 2.0] (second line of the header) and 
the corresponding deltas are .5, .3, and .8, respectively (third line). 
So enter the values: #!CForestGreen #!N #!N  #!F-adobe-courier-bold-r-normal--18*   #!N 1, .5 
#!N 3, .3 #!N 2, .8 #!EF #!N #!N #!EC in 
the three  #!F-adobe-times-bold-r-normal--18*   origin, delta #!EF fields. #!N #!I30 #!N 11. 
On the right side of the prompter window, you can change 
the name of the data variable (field0 by default) and specify 
the data type and structure. For this example, the data are 
floating-point scalar, so you do not need to change the settings. 
#!N #!I30 #!N 12. You can now save the header file 
you have defined. Select  #!F-adobe-times-bold-r-normal--18*   Save As... #!EF from the  #!F-adobe-times-bold-r-normal--18*   
File #!EF pull-down menu. Save the file under any name you 
choose. Note: The data can now be imported by specifying this 
file name to an  #!F-adobe-times-bold-r-normal--18*   Import #!EF module. However, if the 
extension is not "general," you must specify "general" in the "format" 
parameter field of the  #!F-adobe-times-bold-r-normal--18*   Import #!EF configuration dialog box (see 
 #!Ltcnfgbx,dxall61 h Controlling Inputs: Configuration Dialog Boxes  #!EL  ). #!N #!I30 #!N 13. In the initial Data Prompter 
window, note that the  #!F-adobe-times-bold-r-normal--18*   Test Import #!EF and  #!F-adobe-times-bold-r-normal--18*   Visualize 
Data #!EF buttons are now enabled. First choose  #!F-adobe-times-bold-r-normal--18*   Test Import 
#!EF . A window appears, displaying a description of the imported 
data. Now choose  #!F-adobe-times-bold-r-normal--18*   Test Import #!EF . A general purpose 
visualization program will be run on this data set. To view 
the program, choose Open Visual Program Editor from the Windows menu 
of the Image window. You can also experiment with changing the 
interactor settings in the control panel. #!N #!I0 #!N #!EF #!N 
#!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N #!N  #!Lall38,dxall39 h Example 2  #!EL  #!N 
 #!F-adobe-times-medium-i-normal--18*   #!N 
