MATLAB: Comparing the first char of a string in a cell MATLAB I have two varaibles p and d d = {'9S'}; p = {'9D'}; how can I compare just the first char how would I compare the 9 in d to the 9 is p Best Answer d={'9S'};p={'9D'};result=strncmpi(d,p,1)if result=1, first character is same, else not same.Example:d={'PS'};p={'QD'};result=strcmp(d,p,1) %strcmp is case sensitive too % Thanks @madhan Ravi Related SolutionsMATLAB: Conversion of dates to a different format The new date and time functions probably have built-in functions to do what you want, but in their absence, this works:t_str = '20110530';dn = datenum('20110530', 'yyyymmdd');dnstart = datenum(dt_str(1:4), 'yyyy'); % Start Of 2011dayofyear = dn-dnstart+1Result = sprintf('%4s%03d', dt_str(1:4),dayofyear)Result =2011150The +1 is necessary for ‘dayofyear’ because it computes the difference between 01-Jan-2011 and doesn’t include 01-Jan-2011.EDIT — Added ‘Result’ assignment. MATLAB: How to write a code that works like MS Excel “Goal seak” What about fzero? Your code could be structured likep90 = ... % put initial guess herep9_1 = fzero(@(p) fn(p, XSteam), p90);function Z = fn(p9_1, XSteam) s9_1s = s8 ; %known x9_1 = 0.98; eta = ... h8 = ... h9_1s = XSteam('h_ps',p9_1,s9_1s); x9_1s = XSteam('x_ps',p9_1,s9_1s); h9_1 = XSteam('h_px',p9_1,x9_1); Z = (h8 - h9_1)/(h8 - h9_1s) - eta;endView doc fzero for details on exact syntax etc of fzero. Related QuestionRegular Expression to extract bigramMatrix multiplication using a for loopSOLVE for linear system of eqns simbolically“Subscript indices must either be real positive integers or logicals.” Error with analytic function
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