Values from workspace change

Question

Joel Schelander 2021-2-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/756149-values-from-workspace-change

回答： Steven Lord 2021-2-25

采纳的回答： Steven Lord

I have a vector with values:

DH=[0 0 0 0 0 0 3.95 1009.15 0]

I insert the DH in a matrix

TimeofHomeArrival=[Home; DateVector(:,4).'; DateVector(:,5).'; DateVector(:,6).'; DH];

The values in the matrix are however now different than from the workspace

TimeofHomeArrival(5,:)=[ 0 0 0 0 0 0 4 127 0]

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Answer 1

Steven Lord 2021-2-25

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/756149-values-from-workspace-change#answer_633149

Home is an int8 array. When you combined the int8 data with the double data, the double data was converted to int8. See this documentation page and the "Largest and Smallest Values for Integer Classes" section on this documentation page for more information.

If you want to make TimeOfHomeArrival a double array you'll need to convert the int8 data into double by calling double on it.