Using MATLAB

Consider an Anger camera with $9$ square phot$-$multiplier tubes arranged in a $3$X$3$ matrix with pulse heights as recorded in the matrix. The dimension of each pixel is $2$mm X $2$mm$.$ What is the centroid of the signal $($x and y coordinates$)?$ What is the total pulse height.

Pulse height $($amplitude$)$ in each PMT

$510,15$

$10,40,30$

$0,5$

Spatial $($x$,$y$)$ Coordinates of each PMT $($in mm$)$

$-2,2,0,2,2,2$

$-2,0,0,0,2,0$

$-2,-2,0,-2,2,-2$