how to resolve undefined function?

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Lilya
Lilya 2023-3-18
评论： Cris LaPierre 2023-3-19
Hi- I am trying to execute a function (asc2eph) that I found in the file exchange.
It seems it is within the aerospace toolbox.
It does exist on my computer, and the directory is defined.
However, the following error is appeared (I've attached a screenshot from the directory)
'asc2eph' is not found in the current folder or on the MATLAB path, but exists in:
/Users/eyounils/Documents/MATLAB/untitled folder 2/@Ephem/@Ephem
Change the MATLAB current folder or add its folder to the MATLAB path.
Unrecognized function or variable 'asc2eph'.
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Walter Roberson
Walter Roberson 2023-3-18
It is not part of the Aerospace Toolbox.
Use Add-on Explorer to install it.
Lilya
Lilya 2023-3-18
Thank you very much! i did it
it show now the below error
Check for incorrect argument data type or missing argument in call to function 'asc2eph'.

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回答（1 个）

Cris LaPierre
Cris LaPierre 2023-3-18
移动：Cris LaPierre 2023-3-18
You do not appear to be using the correct syntax when calling this function. I suggest reading through the comments at the top of the function to be sure you are supplying it with the expected input values.
https://www.mathworks.com/matlabcentral/fileexchange/46074-jpl-ephemeris-manager
  2 个评论
Lilya
Lilya 2023-3-19
Thanks, Sir Cris. I've checked what you and the below error appears
It is just the first time i get this error. I usually can add/donload toolboxes to matlab easily.
'asc2eph' is not found in the current folder or on the MATLAB path, but exists in:
/Users/eyounils/Library/Application Support/MathWorks/MATLAB Add-Ons/Collections/JPL Ephemeris manager/@Ephem
Change the MATLAB current folder or add its folder to the MATLAB path.
Cris LaPierre
Cris LaPierre 2023-3-19
This is not a MathWorks created function. Someone else has created and shared it with the community.
I would suggest adding the folder " /Users/eyounils/Library/Application Support/MathWorks/MATLAB Add-Ons/Collections/JPL Ephemeris manager" and all subfolders to your MATLAB Path.
See here: https://www.mathworks.com/help/matlab/matlab_env/add-remove-or-reorder-folders-on-the-search-path.html
Be sure to save your changes.

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