how to set graph size

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Soni huu on 28 Feb 2013
how to set my graphic size to (w:h=550:400) now my graph size is 560:420 (automatic)
[ day_number, daily_rain ] = DailyRain( RainData, 2010, 1);
andemande = plot( day_number, daily_rain,'-ok' );
set(andemande,'LineWidth',1);
day_numbermax = max(day_number);
day_numbermin = min(day_number);
datetick('x','dd-mmm','keepticks')
grid on;
ylabel('Akumulasi Curah Hujan (mm)')
xlabel('Hari')
xlim([day_numbermin day_numbermax])
Soni huu on 28 Feb 2013
code to set..

Azzi Abdelmalek on 28 Feb 2013
Edited: MathWorks Support Team on 16 Mar 2021
Set the ‘Position’ property on the current figure (gcf). Specify the position as a vector of the form “[x0 y0 width height]”, where “x0” and “y0” define the distance from the lower-left corner of the screen to the lower-left corner of the figure. By default, the position is in pixels.
x0=10;
y0=10;
width=550;
height=400
set(gcf,'position',[x0,y0,width,height])
You can specify other units (inches, centimeters, normalized, points, or characters). For example:
set(gcf,'units','points','position',[x0,y0,width,height])
You can also save a handle to your figure and set the Position property using dot notation:
f = figure;
f.Position = [10 10 550 400];
Giuseppe on 25 Mar 2021
Hi @Azzi Abdelmalek, if I want to change only "width" and "height", what are the default values of x0 and y0?
Oséias Farias on 4 Jul 2021
Thanks!

Edited: Amirhossein Sadeghi Manesh on 22 Jul 2021
Resizing the figure is mentioned at Matlab's documentation.
doc figure
Scroll down to the Change Figure Size section.
If you hadn't assigned a name for your figure, then use gcf (cf in gcf stands for current figure).
fig=gcf;
fig.Position(3:4)=[550,400];
And put these two lines before your plot of interest.
If your aim is to just change the width and height of your figure as your question sounds like that, then you don't need to change the first and second entries of position. The first two entries are about the position of the figure window in your screen which you can drag and drop that window and has no effect on the size of the figure (and thus no effect on what you put into your paper/book ^_^).