# Selecting poles in complex plane

I have list of poles listed in a vector, poles list = {.....}. They are shown in the figure attached. To use Cauchy’s residue theorem, I would like to select only the poles of the shaded area in the figure. How can I do that in Mathematica?

• This question is highly underspecified. What are you trying to do? Pick out the desired poles from a list? Perform a contour integral that surrounds those poles? Evaluate the residues at those poles? All we have is a drawn figure, and it's impossible to understand what exactly you want to do in Mathematica. Please edit your post by clicking the grey edit button below your post and add more information. – march Nov 21 '17 at 16:40
• Just picking the poles from a list. – qahtah Nov 21 '17 at 16:47

z = Table[i + j I, {i, -5, 5}, {j, -5, 5}] // Flatten