#!F-adobe-helvetica-medium-r-normal--18* #!N #!CDarkGreen #!N #!Rall115 Example 1. Scalar Data on a Regular Grid #!N #!EC #!N #!N This example illustrates how a simple floating-point scalar field, on a regular grid, might be imported from a text file named "record_scalar." The origin of the grid is [1 3 2], with deltas of 0.5, 1, and 0.75 in the x, y, and z directions respectively. #!N #!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N 1. In the Data Prompter initial dialog box, choose Grid or Scattered File; then select the leftmost button in the row labeled #!F-adobe-times-bold-r-normal--18* Grid type #!EF (regular grid). #!N #!I30 #!N 2. Confirm that #!F-adobe-times-bold-r-normal--18* Number of variables #!EF is set to "1" and that the #!F-adobe-times-bold-r-normal--18* Single time step #!EF toggle button is activated. #!N #!I30 #!N 3. For #!F-adobe-times-bold-r-normal--18* Data organization #!EF , confirm that the #!F-adobe-times-bold-r-normal--18* Block #!EF (i.e., record) toggle button is activated. #!N #!I30 #!N 4. Click on #!F-adobe-times-bold-r-normal--18* Describe Data #!EF to bring up the "simplified" prompter. #!N #!I30 #!N 5. Enter the path name of the data file in the #!F-adobe-times-bold-r-normal--18* Data file #!EF field: #!CForestGreen #!N #!N #!F-adobe-courier-bold-r-normal--18* #!N /usr/lpp/dx/samples/data/record_scalar #!EF #!N #!N #!EC #!N #!I30 #!N 6. Browse the data file if you like by choosing #!F-adobe-times-bold-r-normal--18* Browser #!EF from the ellipses to the right of the #!F-adobe-times-bold-r-normal--18* Data Field #!EF field. #!N #!I30 #!N 7. Enter the values "5," "8," and "6," in that order, in the first three #!F-adobe-times-bold-r-normal--18* Grid size #!EF fields. The number of data values is 240 (i.e., 5 * 8 * 6). #!N #!I30 #!N 8. Confirm that #!F-adobe-times-bold-r-normal--18* Data format #!EF is set to ASCII (text). #!N #!I30 #!N 9. Confirm that #!F-adobe-times-bold-r-normal--18* Data order #!EF is set to Row. #!N #!I30 #!N 10. Finally, set the first three origin-delta pairs (in the #!F-adobe-times-bold-r-normal--18* Grid positions #!EF section of the prompter) to: 1.0, 0.5; 3.0, 1.0; and 2.0, 0.75, in that order. #!N #!N Since the data order is Row (i.e., last index varies fastest), the first six data values are associated with positions [1 3 2], [1 3 2.75], [1 3 3.5 ], [1 3 4.25], [1 3 5], and [1 3 5.75 ]. (If the data are stored so that "last index varies slowest," #!F-adobe-times-bold-r-normal--18* Data order #!EF should be set to Column.) #!N #!I30 #!N 11. To save the header file: #!Rex1a #!N #!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N a. 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. #!N #!I30 #!N b. When the #!F-adobe-times-bold-r-normal--18* Save a Data Prompter Header File... #!EF dialog box appears, position the cursor in the #!F-adobe-times-bold-r-normal--18* Selection #!EF field (at the point indicated by the carat). #!N #!I30 #!N c. Enter the name of the file (record_scalar). #!N #!I30 #!N d. Click on #!F-adobe-times-bold-r-normal--18* OK #!EF . #!N #!I0 #!N #!EF #!N The file is saved in your current directory with the extension " #!F-adobe-times-bold-r-normal--18* . #!EF general" and should look like: #!N #!I0 #!N #!EF #!N #!CForestGreen #!N #!N #!F-adobe-courier-bold-r-normal--18* #!N #!N file = /usr/lpp/dx/samples/data/record_scalar #!N grid = 5 x 8 x 6 #!N format = text #!N interleaving = record #!N majority = row #!N field = field0 #!N structure = scalar #!N type = float #!N dependency = positions #!N positions = regular, regular, regular, 1.0, 0.5, 3.0, 1.0, 2.0, .75 #!N #!N end #!EF #!N #!N #!EC #!N #!N Note the information that you have supplied directly (lines 1, 2, and 10). You can visualize the data file using the #!F-adobe-times-bold-r-normal--18* Visualize Data #!EF button in the initial Data Prompter window. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Lall116,dxall117 h Example 2. Cell-centered Data #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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