MATLAB: Change y values in figure to names

figureMATLABplot

I was able to plot temperatures of each hour in the year and got this result using this command:

plot(A(1:8760,5)')

X axis is the hours of the year

Y axis is the temperature vaule of each day

Question:

How can I change the crosses values in X axis to be the months names rather than hours?

i.e.

January instead of 1000

Febraruy instead of 2000

and so on

Best Answer

You need to calculate where each month falls, in terms of hours:

ttk = datetime(2019,1:13,1);
set(gca, 'xtick', hours(ttk-datetime(2019,1,1)), 'xticklabel', cellstr(datestr(ttk,'mmm')))

Check the specific year of your data; the alignment will be different in leap years vs non-leap years.

Alternatively, if you actually specify datetime values for your x-values, Matlab will create a date axis that automatically labels things appropriately:

t = datetime(2019,1,1) + hours(1:8760);
plot(t, A(1:8760,5)');

Related Solutions

MATLAB: Change the x axis labels in plot.

This code shows an example

x = rand(1, 8760); % your vector
t = datetime(2019,1,1,0,0,0):hours(1):datetime(2019,12,31,23,0,0); % 2019 is used because 2020 is leap year
ax = axes();
hold(ax);
plot(t, x)
ax.XTickLabelMode = 'manual';
ax.XTick = datetime(2019,1,1,0,0,0):calmonths(1):datetime(2019,12,31,23,0,0);
ax.XTickLabel = datestr(ax.XTick,'mmm');

MATLAB: Labels not showing for subplots – using xTicks xTickLabels

You forgot to specify the x-coordinates in plot(). Try this

%% Plotting problem
figure
subplot(6,1,1)
%figure





plot(1:one_plot, X(1:one_plot))
set(gca, 'XTick', hour_sub1, 'XTickLabel', tick_label_1);
ylim([0.0, 3])
subplot(6,1,2)
%figure
plot(one_plot+1:2*one_plot, X(one_plot+1:2*one_plot))
set(gca, 'XTick', hour_sub2, 'XTickLabel', tick_label_2)
ylim([0.0, 3])
subplot(6,1,3)
%figure
plot(2*one_plot+1:3*one_plot, X(2*one_plot+1:3*one_plot))
set(gca, 'XTick', hour_sub3, 'XTickLabel', tick_label_3)
ylim([0.0, 3])
subplot(6,1,4)
%figure
plot(3*one_plot+1:4*one_plot, X(3*one_plot+1:4*one_plot))
set(gca, 'XTick', hour_sub4, 'XTickLabel', tick_label_4)
ylim([0.0, 3])
subplot(6,1,5)
%figure
plot(4*one_plot+1:5*one_plot, X(4*one_plot+1:5*one_plot))
set(gca, 'XTick', hour_sub5, 'XTickLabel', tick_label_5)
ylim([0.0, 3])
subplot(6,1,6)
%figure
plot(5*one_plot+1:size(X), X(5*one_plot+1:size(X)))
set(gca, 'XTick', hour_sub6, 'XTickLabel', tick_label_6)
ylim([0.0, 3])

Best Answer

Related Solutions

MATLAB: Change the x axis labels in plot.

MATLAB: Labels not showing for subplots – using xTicks xTickLabels

Related Question