 Previous | Next Creating a matrix from scratch Home ▸ Documentation ▸ Smile ▸ Computing ▸ Smile's maths ▸ Creating a matrix from scratch To make a new matrix from scratch use creatematrix. make a new matrix filled with 1's Use "1" as the direct parameter. set m to creatematrix "1" ncols 20 nrows 15 as matrix This returns a matrix with 300 values equal to 1.0. make a new matrix filled with the x index Use "x" as the direct parameter. set m to creatematrix "x" ncols 20 nrows 15 as matrix This returns a matrix with 15 identical rows, each row contains {0.0, 1.0, ..., 19.0}. make a new matrix filled with the y index Use "y" as the direct parameter. set m to creatematrix "y" ncols 20 nrows 15 as matrix This returns a matrix with 20 identical columns, each column contains {0.0, 1.0, ..., 14.0}. make a new matrix filled with a linear x-scale or y-scale Use "x" or "y" as the direct parameter, and specify a range parameter as a list of two numbers. set m to creatematrix "y" ncols 20 nrows 15 as matrix range {0, 28} This returns a matrix with 20 identical columns, each column contains {0.0, 2.0, ..., 28.0}. make a new matrix with an arbitrary x-scale or y-scale Use "x" or "y" as the direct parameter, and specify an array of real as the ncols (or nrows) parameter. set a to {0, 1, pi} as array of real set m to creatematrix "x" ncols a nrows 15 as matrix This returns a matrix with 15 identical rows and 3 columns, each row containing {0, 1, pi}. make a new diagonal matrix Use "d" as the direct parameter, and specify an array of real as the diagonal (or a single real number, in which case you must specify ncols). set a to {0, 1, pi} as array of real set m to creatematrix "d" diagonal a as matrix This returns a diagonal 3 x 3 matrix with {0, 1, pi} as its diagonal. set m to creatematrix "d" diagonal 1 ncols 10 as matrix This returns the 10 x 10 Identity matrix. Version française Copyright ©2008 Paris, Satimage