help with label

Question

peri 2011-10-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/18737-help-with-label

采纳的回答： Daniel Shub

hello, i have a trouble with using labels, xlabel and ylabel when plotting a graph.

i get this fellowing message: Error in ==> Untitled6 at 6 xlabel('t-verdi')

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peri 2011-10-19

heres the rest of the code:

t = 0 : 0.1 : 4;

y = 1 + exp( - 0.05 * t.^2);

plot(t, y)

axis( [ 0 4 0 3 ] )

xlabel(’t-verdi’ )

ylabel(’y-verdi’ )

title(’Utvikling av . . . ’ )

text( 2, 2.5, ’Grafen laget 12.12.01’ )

gtext(’Grafen er laget ved MATLAB’

Daniel Shub 2011-10-19

What is the error message?

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Answer 1

Daniel Shub 2011-10-19

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在 MATLAB Online 中打开

I am guessing you have a variable somewhere called xlabel. What do you get with

which xlabel -all

it should be something like .../toolbox/matlab/graph2d/xlabel.m. If you get "xlabel is a variable", a drastically different path, or multiple paths, that is your problem.

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Answer 2

Wayne King 2011-10-19

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https://ww2.mathworks.cn/matlabcentral/answers/18737-help-with-label#answer_25113

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Have you copied in pasted your code from some Windows application where ' is not the single quote that MATLAB expects?

t = 0 : 0.1 : 4; 
y = 1 + exp( - 0.05 * t.^2); 
plot(t, y) 
axis( [ 0 4 0 3 ] ) 
xlabel('t-verdi') 
ylabel('y-verdi' ) 
title('Utvikling av . . . ' ) 
text( 2, 2.5, 'Grafen laget 12.12.01') 
gtext('Grafen er laget ved MATLAB');

If you copy your code above into the MATLAB editor, you'll see that the single quotes do not appear properly. They will appear as read apostrophes and the string is not correct for MATLAB.