Syntax for modifying 'LineWidth' in graph?

Hello, my apologies because I expect this is a very simple issue, but I am having difficulty modifying the 'LineWidth' attribute for a figure from the command line, my use of the 'ax.LineWidth' is obviously not correct (below).

box(1,ax.LineWidth,2)

I am using version 2017a, so I don't need to use the set/get functions, is that correct?

Thanks

[Jan]

You did not mention what you want to achieve. The figure does not have a linewidth. The shown command looks like you want to modify the width of the box around an axes? But instead of guessing what you mean, I ask you.

Answer 1

[dpb]

Not enough context to tell for certain but looks like from variable name that ax is probably an axes handle...if so, the 'LineWidth' property is associated not with the axes but the line handle (typically returned by plot)

'box' is a property of an axes but only has values of 'off','on', though so the arguments to the function box are wrong (unless you've aliased it with something of your own definition which is strongly recommended to not do.

Answer 2

[Robert]

I found a solution! The problem I was running into was attempting to use the syntax

box(1,ax.LineWidth,2)

which came from the help menus. However, a bit of digging led to

ax = gca; ax.LineWidth = 2;

which works. Thanks for your help!

Cheers

Answer 3

[Matthew Eicholtz]

If you have a figure,

figure;
% something plotted here...
ax = gca; %axes handle

Then to change the line width of the axes, simply use:

ax.LineWidth = 2; %or whatever number you like