Sum in a 3D array

[valentina.alina]

Hello,

I have a 3 dimension array. On the 10 rows i have 10 coefficients. On the collums i have an index representig the data for whitch the coefficients were built. On the third dimension, the page, i have, basically, the time evolution of the index-coefficient structure. What  i need to do is make a simple sum like this: for each row-collum combination i have to sum the corresponding elements on the pages. I do not know hot to do this...

Can anyone help me please?

[RavensFan]

Use a For Loop to iterate through the pages and add each 2-D array to a running sum that you store within a shift register that is a 2-D array.

[altenbach]

Can you just sum all the pages?

[valentina.alina]

RavensFan , how can i do that? I am new to Labview and it is a bit difficult for me. I understand the principle but i can't figure out what blocks to use and how. 

[RavensFan · Accepted solution]

See below.

[valentina.alina]

Thank you for the example. Unfortunatelly i have an error and i do not understand why... the interrupted line on the left is the 3D array. Can you please help me with this?

[Edit]: i've seen the problem...i put the wrong block.

[RavensFan]

Yep.  You used Insert into Array (I find I rarely ever need that one), and you need Index Array (which has got to be the most heavily used of the array functions.)

I did this to get a 2-D array of the correct dimensions (by indexing out 1 page from the 3-D array) so that all the other pages can be added up.

[altenbach]

Here's just another alternative....

 

[RavensFan]

I knew you'd come up with a more compact way.

Though the idea of "zeroing" an array (by multiplying by zero) to initialize it  is something I think I learned from you in some past thread.

[valentina.alina]

Thank you all for your responses!!

What shall i modify if i need to find the maximum. If the dimensions are: 74 pages, 24 rows and 10 collums  i need a resulting 24 rows and 10 collums 2d array containing the maximum of the corresponding elements in the pages. i tried the Array max & min function but it does not meet the behaviour i need...it gives me the global maximum, wheres i need a set of local max.