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annotate toolbox/seqm.m @ 2:c124219d7bfa draft

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Re-add the 1995 toolbox after noticing the statement in the ~higham/mctoolbox/ webpage.
author Antonio Pino Robles <data.script93@gmail.com>
date Thu, 07 May 2015 18:36:24 +0200
parents 8f23314345f4
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8f23314345f4 Create local repository for matrix toolboxes. Step #0 done.
Antonio Pino Robles <data.script93@gmail.com>
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1 function y = seqm(a, b, n)
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2 %SEQM Multiplicative sequence.
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3 % Y = SEQM(A, B, N) produces a row vector comprising N
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4 % logarithmically equally spaced numbers, starting at A ~= 0
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5 % and finishing at B ~= 0.
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6 % If A*B < 0 and N > 2 then complex results are produced.
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7 % If N is omitted then 10 points are generated.
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8
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9 if nargin == 2, n = 10; end
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10
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11 if n <= 1
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12 y = a;
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13 return
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14 end
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15 p = [0:n-2]/(n-1);
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16 r = (b/a).^p;
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17 y = [a*r, b];