SLICE Function
Standard Library function that subsets an array along one of its dimensions.
enabled.
Usage
result = SLICE(array, dimension, indices)
Input Parameters
array—An array.
dimension—An integer (³0) designating the dimension to subset.
indices—A vector of indices into dimension dimension.
Returned Value
result—An array of slices perpendicular to dimension dimension.
Keywords
Remove—If set and nonzero, indices refer to elements in dimension dimension of array to remove. By default, indices refer to elements of array to extract and return.
Discussion
In the case of a multidimensional input array, the dimension numbers refer to:
0—rows
1—columns
2—planes of the row x column arrays
3—blocks of the planes of the row x column arrays
Examples
Example 1
a = INDGEN(6, 5, 2)
PM, a, ['',''], SLICE(a, 0, [1,3,5])
Output
0 6 12 18 24
1 7 13 19 25
2 8 14 20 26
3 9 15 21 27
4 10 16 22 28
5 11 17 23 29
30 36 42 48 54
31 37 43 49 55
32 38 44 50 56
33 39 45 51 57
34 40 46 52 58
35 41 47 53 59
1 7 13 19 25
3 9 15 21 27
5 11 17 23 29
31 37 43 49 55
33 39 45 51 57
35 41 47 53 59
Example 2
a = INDGEN(3,5)
b= SLICE(a, 1, [1,3])
c= SLICE(a, 1, [1,3], /Remove)
PM, a
PM, b
PM, c
Output
0 3 6 9 12
1 4 7 10 13
2 5 8 11 14
3 9
4 10
5 11
0 6 12
1 7 13
2 8 14
Example 3
a = INDGEN(2,2,5)
b = SLICE(a, 2, [1,3])
c = SLICE(a, 2, [1,3], /Remove)
PM, a
PM, b
PM, c
Output
0 2
1 3
4 6
5 7
8 10
9 11
12 14
13 15
16 18
17 19
4 6
5 7
12 14
13 15
0 2
1 3
8 10
9 11
16 18
17 19
