HELP Plotting hourly time series data

I am trying to write a code for a timeseries that will be used to analyse 3-months worth of hourly data sets (such as temperature, windspeeds ect) however, for some reason I can only seem to get it to plot the monthly time scales.. any help on how to datetick to mm dd yy HH mn?

uvFile = 'C:/Users/darcy/OneDrive/Desktop/Darcy/temp and detections/TEMPTOC.csv';

fid = fopen(uvFile,'r');

fgets(fid) %9 numbers of titles columns, data columns are in yyyy-mm-d(check)

fclose(fid);

fid = fopen(uvFile,'r');

%this loop instructs title columns before data starts to be skipped
for i = 1 : 1
    fgets(fid);
end

c = 0;
%the numbers below indicate the column numbers which the data is found for
%the computer to read them
while ~feof(fid)
    clear tmp;
    tmp = fgets(fid);
    c = c + 1
   MM(c) = str2num(tmp(1:2));
    dd(c) = str2num(tmp(4:5));
    yy(c) = str2num(tmp(7:8));
    HH(c) = str2num(tmp(10:11))
    mn(c) = str2num(tmp(13:14))
    ss(c) = str2num(tmp(16:17))
    dc(c) = str2num(tmp(22:34));
    
    
    
end
fclose(fid);
    
   %check the data looking
   figure(1); clf
   plot(dn,dc,'b-')
   xlabel('Time')
   ylabel('Wind Speed')

   set(gca,'fontsize',12)
   datetick
   grid on
   legend('Wind Speed')
   
   
   
   dn = datenum(yy,mm,dd,H,M,S)

Answer 1

[dpb]

Use the builtin tools and datetime instead of deprecated datenum/datetick

uvFile = 'C:/Users/darcy/OneDrive/Desktop/Darcy/temp and detections/TEMPTOC.csv';
% title columns before data starts to be skipped
data=readtable(uvFile);
...

has a good chance of return everything in a table with the first column already being a datetime

But without knowing what the format of the datestring is, we can't write a specific 'InputFormat' string if it isn't one that is automagically recognized...

But, with datetime instead, you get a time axis automagically without the hassles of datetick

I'll note, though, that it will undoubtedly be too crowded to have hourly tick marks regardless -- 3 months @ 30 d/m * 24 h/d --> 2160 hrs -- while a monitor may have 1980 pixels horizontally.