Any of the following should work in at least Maple versions 14 through 17, for the plaintext data that you've shown. Only the last two would work in Maple 13.
Note the use of round brackets rather than square brackets in the function calls.
Note the semicolon (or colon, to suppress printing the result as output) as statement terminator. That is required for 1D Maple notation input.
ImportMatrix("Maple_Matrix1.txt", source=MATLAB, mode=ascii);
ImportMatrix("Maple_Matrix1.txt", source=MATLAB, mode=ascii);
ImportMatrix("Maple_Matrix1.txt", delimiter=" ");
ImportMatrix("Maple_Matrix1.txt", source=delimited, delimiter=" ");
Note also that the syntax for assignments in Maple is :=
, not =
. The latter only creates an equation (and doesn't assign to anything, by itself). So you would want, say,
A := ImportMatrix("Maple_Matrix1.txt", delimiter=" ");