frequency of letters in English message

i have a massage such as plain= 'my name is samah samir and i am engineer';

1- i want to compute the frecuancy of each letter in this message and compute this relation the sum of the diffrance between the static frequancy in english language and the frequancy of each letter in your plain .

Answer 1

[Star Strider]

One approach —

plain= 'my name is samah samir and i am engineer';
ltrs = double(plain);
ltrs = ltrs(ltrs>32)-double('a')+1;


figure
histogram(ltrs, 26)
xticks(1:26)
xticklabels(compose('%c','a':'z'))

Experiment to get diferent results.

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