Subtract element one from element two in a 1x101 row vector.

Question

Richard Honan 2021-8-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/890297-subtract-element-one-from-element-two-in-a-1x101-row-vector

编辑： darova 2021-8-2

I need to subtract the first element of a vector from the second element. Then continue in that manner.

E3 - E2 then E4 - E3 then E5 - E6 to the end.

% Calculate the Velocity and Accelleration for particle 1 at all times.
load A1_input.txt;      
t=A1_input(:,1)';    % Time in Seconds.
% Calculate the Time for particle using loops.
for i=1:length(t)
    Time(i) =(t(:,2))-(t(:,1));
end
Time(36)  % Trial ans wrong

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Answer 1

Mohammad Sami 2021-8-2

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https://ww2.mathworks.cn/matlabcentral/answers/890297-subtract-element-one-from-element-two-in-a-1x101-row-vector#answer_758537

编辑：Mohammad Sami 2021-8-2

You can use the subset from 1:end-1 and 2:end to calculate without using the for loop.

t = rand(1,101);
tsub = t(2:end) - t(1:end-1)
tsub = 1×100
   -0.4849    0.1134    0.1850   -0.3043   -0.2828    0.1766   -0.0752    0.1635    0.2096   -0.4114    0.5760    0.1126   -0.7018   -0.0319    0.0563    0.3502    0.3789   -0.4994   -0.0447   -0.2081    0.2137    0.1894    0.3079   -0.0553   -0.7959    0.0219    0.5112   -0.5026    0.1934   -0.1884