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I have data of 15 years as i have attached here, which has the format as: Date, time, Pressure data, Temperature Data.

I want to plot the temperature dataset year over year, lets say on x-axis january-december is labeled i want to plot each year data (just Temperature) with different colored plots on the same graph.

Thanks in advance

meghannmarie
on 11 Dec 2019

Try something like this:

fid = fopen('Mod21_All_Inclusive_Data_Nov2019.txt');

Mod = textscan(fid,'%s %s %n %n');

fclose(fid); % Close the file

Temp = Mod{3};

DMY =cellstr(Mod{1});

HM = cellstr(Mod{2});

DMYHM = datetime(DMY,'InputFormat','MM/dd/yy') + duration(HM,'InputFormat','hh:mm');

Y = year(DMYHM);

yrs = unique(Y);

x_axis = day(DMYHM,'dayofyear') + (hour(DMYHM) + (minute(DMYHM)/60))/24;

fig = figure;

hold on

for t = 1:numel(yrs)

yr = yrs(t);

idx = yr == Y;

plot(x_axis(idx),Temp(idx));

end

XTicks = nan(1,12);

XTickLabels = cell(12,1);

for n = 1:12

dt = datetime(2019,n,01);

XTicks(n) = day(dt,'dayofyear');

XTickLabels(n) = month(dt,'name');

end

ax = gca;

ax.XTick = XTicks;

ax.XTickLabel = XTickLabels;

fclose(fid);

Hiro
on 11 Dec 2019

Convert the date information to datetime type and extract just "months" and "days" using the functions, "month" and "day".

This way, you can remove "year" information from your dataset and thus you can line them up in the same x-axis.

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