Convert string containing number to number only

i have 2 strings in a file in line 12 and 13.

line 12:'index_n=12'

line 13:'index_m=17'

i want to read file from start and get values as X=12 and Y=17

[Walter Roberson]

Duplicates http://www.mathworks.com/matlabcentral/answers/309074-string-to-number-conversion-with-mixed-values

[Walter Roberson]

Please do not ask the same question multiple times! If you do not understand an answer or it does not work for you, reply there instead of starting a new Question on the same topic!

Answer 1

[KSSV]

fid = fopen('textfile','rt') ;
S = textscan(fid,'%s','delimiter','\n') ;
fclose(fid) ;
S = S{1} ;

S has all the information of your text file. You can access your line 12 and 13 using S{12}, S{13}. And proceed according to your yesterdays question.