Graphical User Interfaces in Matlab - Part 2

[REZAphysics]

Very instructive guide. Thank you for the video.

[ashmanpotter]

Thanks a lot. Your video was extremely helpful.

[MattMcConaha]

These videos were extremely helpful, thanks.

And by the way, I think you have some aliasing going on when you input 57 as alpha, due to the .1 step size you chose for x.

[darcytakhar]

thank for your video I followed ur tutorial and code my first GUI, it was fun and Just want to ask how do u handle error (ie if user put invalid in put how to output error to the user) thanks

[jakeblanchard]

The figure is already showing when this code is run, so the plot command edits that figure and it displays immediately. It would probably work without the pHandles part, but I haven't tried that. If the figure isn't already showing, then you need a "figure" command to display it. There is sample code in the Matlab documentation that is very similar to this. You might want to take a look. Send me an email if you can't find it (I can't easily post links).

[acadacabra]

great video... but I was just wondering if you meant to plot: y = sin(alpha*x*pi) rather than y = sin(alpha*x)?

[jakeblanchard]

Yes, I think there probably is some aliasing. I was a little cavalier playing around with that parameter.

[lokeshjain]

hi, jake i want to tank u for your wonderful tutorial. make more plz.
i have one problem following your tutorial it did not do the command
set(handles.output, 'string', double2str(sin(alpha*pi)));
here i named tag textoutput as output and all are the same
here is the error
??? Error using ==> set
There is no 'string' property in the 'figure' class.
Error in ==> demogui>buttonplot_Callback at 102
set(handles.output, 'string', num2str(sin(alpha*pi)));
Error in ==> gui_mainfcn at 96
feval..

[jakeblanchard]

There are a variety of ways to do this and there are resources on the net that present much more than I can provide here. I can't put links in these comments, so I would suggest that you google the following keywords: matlab gui error handling