data

$09\mathrm{.}073$;

$2.009,9\mathrm{.}509$;

$3.60411\mathrm{.}27$;

$5.876,14\mathrm{.}4$;

$6.909,16\mathrm{.}36$;

$8.618,20\mathrm{.}09$;

$9\mathrm{.}37122\mathrm{.}03$i

$10\mathrm{.}74,25\mathrm{.}98$;

$11\mathrm{.}35,27\mathrm{.}98$;

$11\mathrm{.}91=30$;

$12.69,33\mathrm{.}3$;

$13\mathrm{.}35,36\mathrm{.}66$;

$13\mathrm{.}95,40$;

$]$;

$x=$data$($;$,1)$;

$y=$data$(z,2)$;

scatter $\text{'},$ 'DisplayName', 'Raw Data'$)$;

hold on:

$p=$ palyfit $(x,y,2)$ :

$x$ fit $=1$ inspace $(min(x),$max$(x),100)$;

$y_{-}$fit $=$polyval $($p$,x_{-}$fit

I need to use the spline function, i just dont now how to implement the code. For the spline