Plotting issues with labeling axis and giving titles

2 visualizaciones (últimos 30 días)
Austin Duncan
Austin Duncan el 23 de Abr. de 2019
Respondida: Adam Danz el 23 de Abr. de 2019
I have commented out the titles and labels as the program runs fine without them but when i uncomment them it still graphs but gives and Index exceds array bounds and dosnt label or title the graph. pls help
R_A1 = -2250;
R_P1 = 3750;
% Plot for shear force
x_beam = 0:.1:5; %length of beam
syms x
y = piecewise(x<2, R_A1, 2<=x<5, R_A1 + R_P1, x ==5,0)
subplot(3,2,1)
% title('Shear Force Diagram')
% xlabel('distance along beam (m)')
% ylabel('Shear Force (N)')
fplot(y)
xlim([0 5])
ylim([-2500 2500])
  2 comentarios
Adam Danz
Adam Danz el 23 de Abr. de 2019
Editada: Adam Danz el 23 de Abr. de 2019
No error when I run it. However, you must move the calls to title(), xlabel(), and ylabel() to after fplot() --or-- include the handle to the subplot axes as the first input to fplot().
Please provide the full copy-pasted error message.
Austin Duncan
Austin Duncan el 23 de Abr. de 2019
this is the response even after the code is moved until after fplot()
Index exceeds array bounds.
Error in Diving_Board_MD (line 33)
title('Shear Force Diagram')

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Respuestas (2)

Walter Roberson
Walter Roberson el 23 de Abr. de 2019
You accidentally created a variable named title which is interfering with calling the function named title

Adam Danz
Adam Danz el 23 de Abr. de 2019
My hunch is that 'title' is a variable in your data and no longer represents matlab's builtin function of the same name.
This reproduces your error:
title = 123456;
title('Shear Force Diagram')
% result:
error: Index exceeds array bounds.
To confirm this,
which title
If title is a variable you'll see: title is a variable.
If title is matlab's function you'll see something like:
C:\Program Files\MATLAB\R2019a\toolbox\matlab\graph2d\title.m
Solution: don't use "title" as a variable name.

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