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POLoop for matrices multiplication
 

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  1. POLoop for matrices multiplication
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    <p>I have this matrix:</p> <pre><code> V1 V2 V3 V4 V5 V6 V7 V8 [1,] 0.8399983 0.01558029 0.00000000 0.0000000 0.00000000 0.00000000 0.00000000 0 [2,] 0.0000000 0.89022017 0.02570281 0.0000000 0.00000000 0.00000000 0.00000000 0 [3,] 0.0000000 0.00000000 0.87910624 0.0242963 0.00000000 0.00000000 0.00000000 0 [4,] 0.0000000 0.00000000 0.00000000 0.0000000 0.03428571 0.00000000 0.00000000 0 [5,] 0.0000000 0.00000000 0.00000000 0.0000000 0.00000000 0.02988506 0.00000000 0 [6,] 0.0000000 0.00000000 0.00000000 0.0000000 0.00000000 0.73438228 0.01666667 0 [7,] 0.0000000 0.00000000 0.00000000 0.0000000 0.00000000 0.00000000 0.00000000 0 [8,] 0.0000000 0.00000000 0.00000000 0.0000000 0.00000000 0.00000000 0.00000000 0 </code></pre> <p>And this vector:</p> <pre><code> [,1] [1,] 908 [2,] 516 [3,] 269 [4,] 85 [5,] 32 [6,] 13 [7,] 2 [8,] 3 </code></pre> <p>And I am trying to come up with a loop that will keep multiplicating the results (new vectors) by the same matrix (it is a simple exemple of population matrices model). I need all the results from the 1st multiplication, until 100th, so I can put them into a graph. Any ideas?</p> <pre><code>&gt; dput(mat) structure(c(0.8399983, 0, 0, 0, 0, 0, 0, 0, 0.01558029, 0.89022017, 0, 0, 0, 0, 0, 0, 0, 0.02570281, 0.87910624, 0, 0, 0, 0, 0, 0, 0, 0.0242963, 0, 0, 0, 0, 0, 0, 0, 0, 0.03428571, 0, 0, 0, 0, 0, 0, 0, 0, 0.02988506, 0.73438228, 0, 0, 0, 0, 0, 0, 0, 0.01666667, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), .Dim = c(8L, 8L), .Dimnames = list( c("[1,]", "[2,]", "[3,]", "[4,]", "[5,]", "[6,]", "[7,]", "[8,]"), c("V1", "V2", "V3", "V4", "V5", "V6", "V7", "V8" ))) &gt; dput(vec) structure(c(908L, 516L, 269L, 85L, 32L, 13L, 2L, 3L), .Dim = c(8L, 1L), .Dimnames = list(c("[1,]", "[2,]", "[3,]", "[4,]", "[5,]", "[6,]", "[7,]", "[8,]"), "X..1.")) </code></pre>
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    1. USMatthew Lundberg
    1. USThales West
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