Update README.md

analysis/README.md

@@ -11,3 +11,7 @@ $d(p,q)=\sqrt{\sum_{i=1}^n(p_i-q_i)^2}$
 protein contact map represents the distance between all possible amino acid residue pairs of a three-dimensional protein structure using a binary two-dimensional matrix. For two residues 
 ${\displaystyle i}$ and ${\displaystyle j}$, the ${\displaystyle ij}$ element of the matrix is 1 if the two residues are closer than a predetermined threshold, and 0 otherwise.
 
+
+### Distance Map
+
+protein distance map is a two-dimensional matrix, where each value represents a residue–residue distance. Its binary form is known as a contact map.