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Random no matrix for 1 & -1

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Offroad Jeep
Offroad Jeep 2015-9-4
回答： James Tursa 2015-9-4
I want to generate a random matrix for which if element is < 0.5 it is equal to -1 and if >=0.5 its equal to 1 . kindly correct the code.......... I have attached....... Thanks
clc
clear all
format compact
nrows= 5
fm_array = rand(nrows)
if fm_array >= 0.5
fm_array == 1
else
fm_array == -1
fm_array
end

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采纳的回答

Guillaume
Guillaume 2015-9-4
nrowcol = 5;
fm_array = rand(nrowcol);
fm_array(fm_array < 0.5) = -1;
fm_array(fm_array >= 0.5) = 1;
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Offroad Jeep
Offroad Jeep 2015-9-4
Thanks..... will you like to work with me in magnetism.......

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更多回答（1 个）

James Tursa
James Tursa 2015-9-4
Another way:
fm_array = 1 - 2*(rand(nrows) < 0.5);

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