convert linear to DB?

My question is should I Convert a linear value to DB (POWER RATIO) in order to plot radargrams with that values?

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/signal/ref/mag2db.html

http://www.mathworks.com/help/signal/ref/db.html

http://www.mathworks.com/help/signal/ref/pow2db.html

"The relationship between power and decibels is ydb = 10 * log10(y)"