Index in position 1 is invalid. Array indices must be positive integers or logical values.

3 visualizaciones (últimos 30 días)
I have :
c(i,2) = 272.0000
c(i,1) = 42.0000
and L(272.0000,42.0000) gives 2
but when I do
L( c(i,2), c(i,1) )
(L is a 697x103 double)
I got
Index in position 1 is invalid. Array indices must be positive integers or logical values.

Respuesta aceptada

Dyuman Joshi
Dyuman Joshi el 10 de Feb. de 2023
Editada: Dyuman Joshi el 10 de Feb. de 2023
The error occurs because your data is not exactly an integer even though it might look like it.
%Data displayed in the default format i.e. short format
y = 1.0000123
y = 1.0000
Type
format long
in your code and see the value of the the elements.
y
y =
1.000012300000000
Use round(), floor() or ceil() according to what you want to do.
L( round(c(i,2)), round(c(i,1)))
  1 comentario
Xavier
Xavier el 10 de Feb. de 2023
Thank you very much for your answer, I tried with floor() and it works. It is quite surprising though because the value in c are from the use of ginput() so I thought it gives integers corresponding to a pixel.

Iniciar sesión para comentar.

Más respuestas (1)

Mathieu NOE
Mathieu NOE el 10 de Feb. de 2023
hello
depending of your format, the command window will display more or less decimals
I suspect
c(i,2) = 272.0000...............123
c(i,1) = 42.0000...............789
are not 100% integer so you have to round them to the nearest integer to make your code work
L( round(c(i,2)), round(c(i,1)) ) should now display the correct value

Categorías

Más información sobre Matrix Indexing en Help Center y File Exchange.

Productos


Versión

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by