How to get number of peaks and locs from different graphs that are plotted using a single for loop?

    figure;
for k=1:length(x)
    profile(k)=img(y(k),x(k));
    plot(profile,'r-','LineWidth',2);
grid on;
ylim([0 2]);
end

This code giving me different plots. For each of the plot I am getting different peaks. How can individually calculate no of peaks and locs for each of the plot?

Answer 1

[KSSV]

Have a look on functions max and findpeaks.

[Zara Khan]

findpeaks I have used but not getting values for individual plots. That is my main problem. I mean how to use this findpeaks to get values for individuals?

[KSSV]

iwant = cell(length(x)) ;
figure;
for k=1:length(x)
    profile = img(y(k),x(k));
    [pks,locs] = findpeaks(profile) ;
    iwant{i} = pks ;
    plot(profile,'r-','LineWidth',2);
grid on;
ylim([0 2]);
end

[Zara Khan]

Error using findpeaks Expected Y to be one of these types:

double, single, uint8, uint16, uint32, uint64, int8, int16, int32, int64

Instead its type was logical.

Error in findpeaks>parse_inputs (line 189) validateattributes(Yin,{'numeric'},{'nonempty','real','vector'},...

Error in findpeaks (line 131) [y,yIsRow,x,xIsRow,minH,minP,minW,maxW,minD,minT,maxN,sortDir,annotate,refW] ...

Error in ci_1 (line 33) [pks,locs] = findpeaks(profile);

This is the error I am getting . converting profile to double before using findpeaks still getting the same error