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The Maxima on-line user's manual

Algebra Calculator

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Read_matrix

Function: read_matrix (<S>)

load(draw);
 load (numericalio);
 s2 : read_matrix (file_search ("wind.data"));
 draw3d(         title = "Daily average wind speeds. Two data sets",         point_size = 2,         key        = "Sample from stations 1, 2 and 3",         points(args(submatrix (s2, 4, 5))),         point_type = 4,         key        = "Sample from stations 1, 4 and 5",         points(args(submatrix (s2, 2, 3))) );

Function: read_matrix (<S>, <M>)

Function: read_matrix (<S>, <separator_flag>)

Function: read_matrix (<S>, <M>, <separator_flag>) read_matrix(<S>) reads the source <S> and returns its entire content as a matrix. The size of the matrix is inferred from the input data; each line of the file becomes one row of the matrix. If some lines have different lengths, read_matrix complains.

read_matrix(<S>, <M>) read the source <S> into the matrix <M>, until <M> is full or the source is exhausted. Input data are read into the matrix in row-major order; the input need not have the same number of rows and columns as <M>.

The source <S> may be a file name or a stream.

The recognized values of <separator_flag> are comma, pipe, semicolon, and space. If <separator_flag> is not specified, the file is assumed space-delimited.

(%o1)                                true
(%i2) 

Related Examples

matrix

a:matrix([1,2,1],[2,4...

b:matrix([0,0,0],[0,1...

ab:a*a;

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matrix

r1:[3,2,2,34];

r2:[2,3,2,32];

r3:[1,1,1,14];

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matrix

a = matrix([1,2,3]);

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matrix-transpose

a: matrix ([1, 1, 1],...

inverse(a.transpose(a));

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matrix

b:matrix([y-1,0,y-1,0...

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matrix

J : matrix([0,0,1,0,0...

J*J*J*J*J*J*J*J*J*J*J...

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matrix

P:matrix([0.5,0.5,1/(...

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matrix-rank

A:matrix([-2,0,0],[3,...

rank(A);

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matrix-permanent

a: matrix ([1,0,0,1,0...

permanent(a);

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matrix-modulus-remainder

modulus: 37;

B: matrix([25, 36, 36...

C: matrix([7, 16, 36]...

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