Sum of all elements in a single wave

Hi all,

I have a wave with one column and a lot of rows.  I want to take the sum of all the elements in the wave.  Other than copying and pasting the table into an excel and using the summation function, is there a way to code it in Igor?

I got this far, but obviously it's not going from i to N. Thanks in advance

function WaveSum (Dep_E)
    wave Dep_E
    variable N=numpnts(Dep_E),Sum, i
    for (i=0; i<(N); i+=1)
        Sum = Dep_E[i]+Dep_E[i+1]
    endfor
    print Sum
end

 

If I understand correctly, you would need only use the "sum" function itself. For example. In your case you would call 

print sum(Dep_E)

Taking the guided tour of Igor Pro might help you get more familiar with this and other functions/operations. You can access it from the Help Menu, clicking "Open Online Manual" under the manual tab, then going to the "Getting Started" section in the manual that opens.

Hi,

 

I would like to clarify your request a bit.

You mention you have a wave with 1 column and lots of rows.  I take this to mean you have a 1-dimensional wave.

 

If this is the case then the Sum function does what you want

total = sum(Dep_E)

Also notice the color of the your declared variable Sum.  It is doing that because it is a reserved word, a function in this case.

Andy

In addition to the sum() function, there is also 

 

WaveStats Dep_E // useful if other parameters are needed. e.g. S_dev, max, min etc
print V_Sum, V_sdev

MatrixOP/O W_Sum = sum(Dep_E) // may be more efficient for large waves
print W_sum[0]