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Size: 1503
Comment:
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Size: 1542
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 27: | Line 27: |
| . (!) Q*Q*6 is the total number of nodes, and line entries in this file. . (!) A Q of 512 is the largest that we represent. It contains 1.5 million vertices and is 56 MB uncompressed. |
(!) Q*Q*6 is the total number of nodes, and line entries in this file. (!) A Q of 512 is the largest that we represent. It contains 1.5 million vertices and is 56 MB uncompressed. |
| Line 32: | Line 33: |
| (./) Above is copied exactly from SHAPE.TXT. Is it accurate?? | '''Column 1''' - Position in x |
| Line 34: | Line 35: |
| '''col 4''' - Sigma values. | '''Column 2''' - Position in y '''Column 3''' - Position in z '''Column 4''' - Sigma values |
SIGMA.TXT
Description
This text file is essentially a copy of the most recently made ICQ shape file SHAPE.TXT that includes an additional column of sigma values.
SIGMA.TXT is made by densify and is located in the SHAPEFILES/ directory.
Here is a sample SIGMA.TXT file:
512
0.00810 0.19764 0.13333 0.29844E-01
0.00871 0.19742 0.13360 0.28206E-01
0.00932 0.19721 0.13386 0.27425E-01
0.00994 0.19700 0.13414 0.27743E-01
0.01055 0.19677 0.13441 0.28415E-01
0.01116 0.19655 0.13466 0.31917E-01
0.01177 0.19633 0.13493 0.31631E-01
0.01239 0.19615 0.13521 0.28469E-01
0.01300 0.19594 0.13549 0.28856E-01The output values are:
Line 1 - Q (resolution). This gives the number of nodes for i and j. Multiple Q by 6 coordinate vector spaces to fill out the entire region.
Q*Q*6 is the total number of nodes, and line entries in this file. A Q of 512 is the largest that we represent. It contains 1.5 million vertices and is 56 MB uncompressed.
Lines 2 and following - The location of a vertex in i, j, k space (Cartesian coordinates).
Column 1 - Position in x
Column 2 - Position in y
Column 3 - Position in z
Column 4 - Sigma values
(Compiled by TC)