Sums the elements of an inputarray.
The array that is totalled. Can be of any data type except string.
A scalar value equal to the sum of all the elements of array. If the Dimension keyword is used, then result will have the structure of the input array, but with the specified dimensions collapsed.
A scalar or array of integers (n 
0) that specifies the dimension(s) over which to operate.
The Dimension keyword lets you sum the elements across one or more dimensions of the input array. See the Examples sections for examples of the use of Dimension.
NOTE: If the input is of type byte, integer, or long, TOTAL performs its summation in long arithmetic. This is faster than performing the summation in floating-point arithmetic. To sum an array of longs with floating-point arithmetic, you must first convert the long values to double precision.
a = INDGEN(3, 2)
PRINT, a
0 1 2
3 4 5
PRINT, TOTAL(a(*, 0))
3.00000
.
PRINT, TOTAL(a(1, *))
5.00000
.
PRINT, TOTAL(a)
15.0000
.
PRINT, TOTAL(a, Dim=0)
3.0000
12.0000
PRINT, TOTAL(a, Dim=1)
3.00000 5.00000 7.00000
PRINT, TOTAL(a, Dim=[0,1])
4.00000
a = INDGEN( 4, 4 ) & PM, a
0 4 8 12
1 5 9 13
2 6 10 14
3 7 11 15
PM, TOTAL( a, d=0 )
6.00000 22.0000 38.0000 54.0000
PM, TOTAL( a, d=1 )
24.0000
28.0000
32.0000
36.0000
PM, TOTAL( a, d=[0,1] ) ; trace
30.0000
a = INDGEN( 2, 2, 4 ) & PM, a
0 2
1 3
4 6
5 7
8 10
9 11
12 14
13 15
PM, TOTAL( a, d=2 )
24.0000 32.0000
28.0000 36.0000
PM, TOTAL( a, d=[0,1] )
3.00000
11.0000
19.0000
27.0000
a = INTARR( 5, 10, 5, 10, 5 )
INFO, TOTAL( a, d=1 )
Expression
FLOAT = Array(5, 1, 5, 10, 5)
INFO, TOTAL( a, d=[0,2] )
Expression FLOAT = Array(1, 10, 1, 10, 5)
