How to reshape the x-axis in this case?

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I have a chart (attached) that starts the sample in 2008 despite the actual data starts in 2009-01. I would like to understand why and correct it.
This is an example that replicates the issue:
t1 = datetime(2009,01,01);
t2 = datetime(2019,11,01);
t = t1:calmonths:t2;
t= datenum(char(t),'dd-mm-yyyy');
subplot(3,1,1)
% 1st shaded area
d1=datenum(datetime(2009,01,01));
d2=datenum(datetime(2009,06,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
% 2nd shaded area
d1=datenum(datetime(2011,09,01));
d2=datenum(datetime(2013,03,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
plot(t, randn(131,1), 'LineWidth',1,'Color', [0 0 0]);
ax.XTick = t(1:end);
datetick('x','yyyy','keepticks');
yline(0,'-')
ylabel('%')
title('Business Cycle Shock', 'FontWeight', 'Normal')
subplot(3,1,2)
% 1st shaded area
d1=datenum(datetime(2009,01,01));
d2=datenum(datetime(2009,06,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
% 2nd shaded area
d1=datenum(datetime(2011,09,01));
d2=datenum(datetime(2013,03,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
plot(t, randn(131,1), 'LineWidth',1,'Color', [0 0 0]);
hold on
ax.XTick = t(1:end);
datetick('x','yyyy','keepticks');
yline(0,'-')
ylabel('%')
title('Monetary Policy Shock', 'FontWeight', 'Normal')
subplot(3,1,3)
% 1st shaded area
d1=datenum(datetime(2009,01,01));
d2=datenum(datetime(2009,06,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
% 2nd shaded area
d1=datenum(datetime(2011,09,01));
d2=datenum(datetime(2013,03,01));
x=[[d1,d2],[d2,d1],d1];
y=[-[6,6],[6,6],[-6]];
fill(x, y, [0.7 0.7 0.7],'LineStyle','none', 'FaceAlpha', 0.2);
hold on
plot(t, randn(131,1), 'LineWidth',1,'Color', [0 0 0]);
hold on
ax.XTick = t(1:end);
datetick('x','yyyy','keepticks');
yline(0,'-')
ylabel('%')
title('DFPA Shock', 'FontWeight', 'Normal')
In other words, I would like the grey bar to start in 2009 when my sample starts and not before.
Can anyone help me?
Thanks.

Risposta accettata

Star Strider
Star Strider il 29 Ott 2020
Either:
axis tight
or:
xlim([min(t) max(t)])
should work.

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