putting a text in a white space on a plot

I have some plots that I want to write a text on them but I want to place the text in a white space inside plot. I wonder how I can do that?

x=rand(10,10);

y=rand(10,10);

plot(x,y,'o'); % I want to show the following text in a white space inside the plot window

text('L=C0*D+C1');

Answer 1

[Paulo Silva]

What you are asking for isn't easy to implement but can be done, what the code has to do is the search for one empty space big enough for that text, there's also a chance that there's no such space available and the code will fail.

There are alternatives like using the legend, xlabel, ylabel and title. Also title can have many lines

title({'Main Title text'; 'Subtitle text'});

or this solution:

title(['\fontsize{14} Main Title ', ...
        '\newline \fontsize{10} \color{red} \it My Subtitle']);

There is also the gtext function that allows the user to select where to put the text.

[Hassan]

thanks Paula. what I meant was finding a space with less density of data (or maximum white space) and putting the text in center of it. it doesn't seem nice to use a title which puts the text outside of the plot since there are enough white space inside each plot.

[Paulo Silva]

My name is Paulo not Paula, what you want to do is waste time and add more code to your program just to do that simple thing, ok buy you already know the basic idea "what I meant was finding a space with less density of data (or maximum white space) and putting the text in center of it" so start coding that and see if it's really needed.

[Hassan]

Sorry Paulo for misspelling your name. Well, I just wondered someone may have it done it before since especially for me who is not good in programming it will take ages.

Answer 2

[Jan]

Look in the code of LEGEND, subfunction lscan. This function has 92 lines, because the task is not trivial. But when the found location is nice for a legend, a text may be matching also.

[Hassan]

I will do and hope to find an answer there, thanks Jan for the help.