Error at '(' in first line of code

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Evan Mossel
Evan Mossel 2018-7-9
评论： Walter Roberson 2018-7-9
I am getting several errors on this line of code. The first is a error at '(' between size and 1. The next is at the ')' at the end of the line. Please help me understand what I am missing The input for the moonpos function is (vector of julian days in TDT time scale; output coordinate type). There could be a problem with the input but I am not sure.
function [X,Y,Z]=moonpos(size(1);elpdt)
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Evan Mossel
Evan Mossel 2018-7-9
编辑：Walter Roberson 2018-7-9
I tried to search through the library https://www.mathworks.com/matlabcentral/fileexchange/56041-moon-position to find when the moonpos inputs are defined. Thst was the best I could come up with. I am not sure how else to define a time vector.

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Walter Roberson
Walter Roberson 2018-7-9
function [X,Y,Z] = moonpos(julian_days, elpdt)
When you are declaring or calling a function, you must use comma between arguments, not semi-colon.
When you are declaring a function, the list of parameters in () must be pure variable names or the character ~ (by itself), not expressions.
In MATLAB, you do not declare the sizes of the parameters in the function declaration.

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