cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 

how do I sum all elements of an array?

Highlighted
Newbie

how do I sum all elements of an array?

I need to sum all elements of an array.  Is there a function that does this?

6 REPLIES 6
Highlighted

Re: how do I sum all elements of an array?

Hi,

Yes there is a function.  It is on the ribbon at Maths | Operators And Symbols | Operators | Calculus.

 

Capture.JPG

Cheers Terry

Highlighted

Re: how do I sum all elements of an array?

Hi,

This for an "array" rather than just a "vector"

Capture.JPG

Highlighted

Re: how do I sum all elements of an array?

The summation symbol Terry pointed you to only works with column and row vectors (matrices with either just one column or just one row).

In case you are looking for the sum of all elements of an arbitrary matrix, here are two shorter routines which do the job:

B1.png

And here is a way to sum up recursively all scalars even in multiple nested matrices (for whatever that may be worth).

B2.png

Worksheet in format P5 attached

Highlighted

Re: how do I sum all elements of an array?

You could also do the following for matrices (though not nested matrices):

 

summation.PNG

Alan

Highlighted

Re: how do I sum all elements of an array?

Or, to be independent of ORIGIN and of the size of the array/Matrix:

LM_20190103_ArraySum.png

Success!
Luc

Prime 3.1 file attached

Highlighted

Re: how do I sum all elements of an array?

OK, here sure are many ways to skin a cat.

 

Even though DJV doesn't show any interest, here are two more ways to achieve the desired result.

B1.png

 

Personally I still would prefer my first one, "SumAll1". It also seems to be the fastest, followed by the recursive "SumAll3".

B2.png

Worksheet in Format P5 attached.

 

Announcements