Suppose you have a variable ''estimate[a,b,t]'' which you want scale to match ''targetControl_tot[t]''. Two equivalent statements are:

<code>
target[a,b,t] = norm (estimate[a,b,t]; dim1=a, dim2=b) * targetControl_tot[t]
</code>

and

<code>
target[a,b,t] = targetControl_tot[t] / estimate_tot[t] * estimate[a,b,t]
</code>

where

<code>
estimate_tot[t] = sum (estimate[a,b,t]; dim1=a, dim2=b)
targetControl_tot[t] = sum (target[a,b,t]; dim1=a, dim2=b)
</code>