Using All in MapAt in Mathematica

Question

I often have a list of pairs, as

data = {{0,0.0},{1,12.4},{2,14.6},{3,25.1}}

and I want to do something, for instance Rescale, to al

Answer 1

This worked for me and a friend

In[128]:= m = {{x, sss, x}, {y, sss, y}}
Out[128]= {{2, sss, 2}, {y, sss, y}}

In[129]:= function[ins1_] := ToUpperCase[ins1];
fatmap[ins2_] := MapAt[function, ins2, 2];

In[131]:= Map[fatmap, m]
Out[131]= {{2, ToUpperCase[sss], 2}, {y, ToUpperCase[sss], y}}