Hello, can you help me with my coding? My coding purpose is to redraw the correct line freehand drawing by B-spline following user intention. Could you help me with these coding? I use this coding since it doesnt run. And only one error include.

bspline_gui from https://www.mathworks.com/matlabcentral/fileexchange/27374-b-splines?focused=5252181&tab=function

      editx = uispanedit(panel, ...
          'Height', 25, ...
          'HorizontalAlignment', 'left', ...
          'TooltipString', 'x coordinate', ...
          'Callback', @bspline_gui_setpoint);

[Im_possible_woman]

the error is in the line 45 which is:

Error in bspline_gui (line 45) editx = uispanedit(panel, ...

Please help me to solve this...

[Walter Roberson]

Copyrighted code removed and replaced with a link to the code.

We need to see the complete error message, everything in red.

[Walter Roberson]

I do not know. What error message are you getting, and which MATLAB are you running ?

[Im_possible_woman]

Im using matlab 2015. im using the code through this link https://www.mathworks.com/matlabcentral/fileexchange/27374-b-splines?s_tid=srchtitle

[Im_possible_woman]

@Walter Roberson, can you run the program by redraw a line?

[Im_possible_woman]

and this is my error message the error is in the line 45 which is:

Error in bspline_gui (line 45) editx = uispanedit(panel, ..

(those message error just within this code)

Answer 1

[Walter Roberson]

In bspline_gui.m before the assignment to the variable fig, add the line

    hg1 = verLessThan('matlab', '8.4');

Then change the assignment to ax to become

    ax = axes('Parent', fig, ...
        'Units', 'normalized', ...
        'OuterPosition', [0.2 0 0.8 1], ...
        'XLimMode', 'manual', ...
        'YLimMode', 'manual', ...
        'ZLimMode', 'manual');
    if hg1
        set(ax, 'DrawMode', 'fast');
    else
        set(ax, 'SortMethod', 'childorder');
    end

Then in gui_bind_event.m change

validateattributes(obj, {'numeric'}, {'scalar'});

to

validateattributes(obj, {'numeric', 'matlab.ui.Figure'}, {'scalar'});

You will now be able to run the code.

The GUI should have four text edit boxes at the bottom left, but it probably will not have those until you resize the figure once. The boxes are probably going to show up as unlabeled. One is to edit x, another to edit y, another to edit z, and the last to edit w -- but the order will probably be w z y x from top to bottom. I do not know what these do.

If you resize the GUI too much, the text boxes will probably disappear. I do not know where they go.

If you right-click after placing points, you will not be able to add more points.