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Too many input arguments for RMS - sudden issue

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Erik J
Erik J am 2 Mär. 2022
Kommentiert: Walter Roberson am 27 Dez. 2023
Suddenly, code that has long worked no longer does. Part of the code uses the rms function. The error I get is "too many input arguments." I have never gotten this error on this code before.
When I check the rms function by just creating a vector (e.g., x = 1:100; rms(x)) - I get the same error.
Does anyone know what could be going on?
Thank you.
  1 Kommentar
Chunru
Chunru am 3 Mär. 2022
try "which rms" to find out if rms has been redefined somewhere. Or "dbstop error" to debug the code.

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Antworten (1)

vidyesh
vidyesh am 27 Dez. 2023
Bearbeitet: vidyesh am 27 Dez. 2023
Hi Erik,
I understand that the 'rms' function is unexpectedly generating an "too many input arguments" error with an input that previously worked without issue. There are several potential causes for this behavior:
1) Variable Name Conflict: There might be a variable named 'rms' in the workspace, which could interfere with the function call. To check for this, you can use the command:
who rms
If a variable named 'rms' exists, rename it before attempting to use the 'rms' function again.
2) Function Overloading: A user-defined function named 'rms' may be present in the workspace and it could be expecting different inputs. To verify that the built-in 'rms' function is being called, use:
which -all rms
This will show you all the functions named 'rms' that MATLAB can find in the search path.
3) Path Issues: It's possible that directory changes have caused a custom function to override the built-in 'rms' function. To restore the MATLAB search path to its default state and clear any custom paths, execute the following commands:
restoredefaultpath
rehash toolboxcache
savepath
For more detailed information, you may refer to this MATLAB Answers page:
Hope this answer helps.
  2 Kommentare
Stephen23
Stephen23 am 27 Dez. 2023
Bearbeitet: Stephen23 am 27 Dez. 2023
"Variable Name Conflict" leads to a completely different error message:
rms = pi;
x = 1:100;
rms(x)
Index exceeds the number of array elements. Index must not exceed 1.

rms appears to be both a function and a variable. If this is unintentional, use 'clear rms' to remove the variable 'rms' from the workspace.
Walter Roberson
Walter Roberson am 27 Dez. 2023
Unless the replacement variable just happened to be an anonymous function that did not accept inputs...

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