SEPARATE(A, Rowsize, FixLongitudes)
Insert a bad-value between features (Discrete Sampling Geometries datasets)
| Arguments: | A | Variable to edit on I axis |
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Rowsize |
array with per-feature row lengths, in the E direction |
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| FixLongitudes | Option to fix longitude branch-point jumps 1 if A is longitudes needing modulo fixes, 0 otherwise |
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Result Axes: |
X |
Inherited from argument A |
|
Y |
Normal |
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Z |
Normal |
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T |
Normal |
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E |
Normal |
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F |
Normal |
Argument 3 is set to 1 if the variable given in argument 1 is a longitude variable which is longitude along a track line which is limited e.g. to -180:180 and which crosses the dateline, thus having values which approach 180 then jump to negative values. The Fix is to add or subtract 360 when a longitude value differs from the previous longitude by more than 200. This fix is applied only within a single feature (e.g. within a trajectory). If Argument 3 = 0 the function will not apply this option.
Example
yes? LIST SEPARATE({6,5,4,3,2,1}, esequence({1,2,3}), 0)
VARIABLE : SEPARATE({6,5,4,3,2,1}, ESEQUENCE({1,2,3}), 0)
SUBSET : 8 points (X)
1 / 1: 6.000
2 / 2: ....
3 / 3: 5.000
4 / 4: 4.000
5 / 5: ....
6 / 6: 3.000
7 / 7: 2.000
8 / 8: 1.000
yes? list separate ({179.1,179.7,-179.3,178.4, 234.,235.1,233.}, esequence({4,3}), 1)
VARIABLE : SEPARATE ({179.1,179.7,-179.3,178.4, 234.,235.1,233.}, ESEQUENCE({4,3}), 1)
SUBSET : 8 points (X)
1 / 1: 179.1
2 / 2: 179.7
3 / 3: 180.7
4 / 4: 178.4
5 / 5: ....
6 / 6: 234.0
7 / 7: 235.1
8 / 8: 233.0