Clarification regarding text in figure

I have a quick question:

I was trying to get text on a figure, kindly consider the following:

t = linspace(0,2*pi,50);
y = sin(t);
plot(t,y)

Following works fine

text(2, 0, '$\theta$', 'interpreter','latex','Position', [0.1 0.8], 'Units', 'normalized' );

But not this

    text('$\theta$', 'interpreter','latex','Position', [0.1 0.8], 'Units', 'normalized' );

Why? Can someone please explain.

Thanks

Answer 1

[dpb]

>> help text
 text   Text annotation.
    text(X,Y,'string') adds the text in the quotes to location (X,Y)...

Note the X,Y inputs are not documented as optional

[Pankaj]

Thanks dpb for the reply, I could figure it out.

X and Y were provided with 'Position' property, I was missing 'String' as argument. Just add 'String' to the command.

    text('String','$\theta$', 'interpreter','latex','Position', [0.1 0.8], 'Units', 'normalized' );

That works.

Screenshot form Text Properties help.

[dpb]

Yes, but the first didn't supply all properties via the named parameters in which case the X,Y implied position values must be provided.

While the above form is allowable, what's the point? It's bulkier and more error-prone as you've demonstrated than the shorthand version with only additional parameters that aren't default needing supplied...