see i am executing the code below
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tina jain
el 7 de Abr. de 2015
Comentada: tina jain
el 7 de Abr. de 2015
close all;
clear all;
clc;
str=('ttttttPttttPPttt');
length=numel(str);
aa=estring(str)
zz=numel(aa)
comp_ratio=length/zz
------function estring-----------
function y = estring(str)
len = numel(str);
i = 0;
count = zeros(1,len);
y=[];
while( i<len )
j=0;
count(i+1) = 1;
while( true )
j = j + 1;
if( i+j+1 > len )
break;
end
if( str(i+j+1)==str(i+1) )
count(i+1) = count(i+1) + 1;
else
break;
end
end
if( count(i+1)==1 )
a=str(i+1);
length(a);
y = [y a];
i = i + 1;
else
a=str(i+1);
b=count(i+1);
y =[y a num2str(b)];
i = i + b;
end
end
end
I WANT TO KNOW THAT LENGTH/ZZ IS ACTUALLY CALCULATING COMPRESSION RATIO OR MY ASSUMPTION IS WRONG
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Respuesta aceptada
Geoff Hayes
el 7 de Abr. de 2015
As for calculating the data compression ratio, your code seems appropriate. You have divided the uncompressed size by the compressed size which is similar to the same equation found elsewhere.
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