Difference between x = 0:0.1:2pi and linspace(0,2pi,0.1)

Question

Dhairya 2022-11-13

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https://ww2.mathworks.cn/matlabcentral/answers/1849598-difference-between-x-0-0-1-2-pi-and-linspace-0-2-pi-0-1

评论： Dhairya 2022-11-13

采纳的回答： David Hill

i was going through a matlab code and it had x = 0:0.1:2*pi written

i wanted to ask what is the difference between this and linspace and how it is used?

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Answer 1

David Hill 2022-11-13

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https://ww2.mathworks.cn/matlabcentral/answers/1849598-difference-between-x-0-0-1-2-pi-and-linspace-0-2-pi-0-1#answer_1098198

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Linspace divides the interval into the exact number specified, while colon notation just keeps increasing the interval by the middle number not to exceed the last number.

x=0:.1:2*pi
x = 1×63
         0    0.1000    0.2000    0.3000    0.4000    0.5000    0.6000    0.7000    0.8000    0.9000    1.0000    1.1000    1.2000    1.3000    1.4000    1.5000    1.6000    1.7000    1.8000    1.9000    2.0000    2.1000    2.2000    2.3000    2.4000    2.5000    2.6000    2.7000    2.8000    2.9000
y=linspace(0,2*pi,63)
y = 1×63
         0    0.1013    0.2027    0.3040    0.4054    0.5067    0.6081    0.7094    0.8107    0.9121    1.0134    1.1148    1.2161    1.3174    1.4188    1.5201    1.6215    1.7228    1.8242    1.9255    2.0268    2.1282    2.2295    2.3309    2.4322    2.5335    2.6349    2.7362    2.8376    2.9389