How do i set the marker and line commands to accept the symbols as inputs

p.LineStyle = input('Select which line style you would like: ','s');
while p.LineStyle ~= ('''-''' | '''--''' | ''':''' | '''-.''' | '''none''')
    p.LineStyle = input('Refer to the PDF document for valid inputs: ');
end

I get the error 'Matrix dimensions must agree'

[Walter Roberson]

Note that if p is a Mathworks graphics object, then setting p.LineStyle to something invalid would error before getting to the while. That is why I store into a different variable and leave the setting of p.LineStyle until after the input has been validated.

Answer 1

[Star Strider]

See if the strcmpi (link) function will do what you want.

This works for me:

p.LineStyle = input('Select which line style you would like: ','s');
while ~strcmpi(p.LineStyle, {'''-''' , '''--''' , ''':''' , '''-.''' , '''none'''})
    p.LineStyle = input('Refer to the PDF document for valid inputs: ');
end

Answer 2

[Caglar]

You need to make it

 input('Refer to the PDF document for valid inputs: ','s')

Check input help page for the reason of parameter 's'.

Answer 3

[Matt J]

 while ~ismember( p.LineStyle ,{'-',':','-.','--','none'})

    disp 'Refer to the PDF document for valid inputs:', disp ' ';
    p.LineStyle = input('Select which line style you would like: ','s');

 end

Answer 4

[Walter Roberson]

valid_styles = {'-', '--', ':', '-.', 'none'};
while true
  LineStyle = input('Select which line style you would like: ','s');
  if ismember(LineStyle, valid_styles)
    p.LineStyle = LineStyle;
    break;
 end
 fprintf('valid styles are: %s\n', strjoin(valid_styles, ' '));
end