how to use find command to find data?

I have excel sheet now in that excel sheet I have two rows one is temp and elong. now I have to take user input and find that value in temp row and also find corresponding elong value available in next cell. how can I find that?? for example excel sheet data is something shown below. temp 31.223 31.789 32.569 elong 0.5,0.6,0.7 now if user give value 31 then matlab have find nearest value to 31 which is 31.223 from temp row and should return me corresponding elong value which is 0.5. how to do that? and how can I use find function to solve above problem??

Answer 1

[Andrei Bobrov]

temp = [ 31.223 31.789 32.569];
elong = .5:.1:.7;

inp = 31;

[~,k] = min(abs(temp - inp));
out = elong(k);