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Please I need help, i am running a code but i am receiving an error message: Attempted to access Px(1.18059); index must be positive integer or logical

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olawoyin abiodun
olawoyin abiodun 2015-6-3
关闭： MATLAB Answer Bot 2021-8-20
Please I need help, i am running a code but i am receiving an error message: Attempted to access Px(1.18059); index must be positive integer or logical

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回答（2 个）

B.k Sumedha
B.k Sumedha 2015-6-3
编辑：B.k Sumedha 2015-6-3
Its a floating point error down at the 5th significant figure. If you simply round "Px", it'll MAY work
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olawoyin abiodun
olawoyin abiodun 2015-6-4
编辑：Walter Roberson 2015-6-4
Thanks for your quick response and assistance, the code is below Sumedha, Guillaume. Thanks, the code is as follows
Rx = log2((1 + Px(var_ab _ var_ae)+(1 +var_ae*Pw +Pb*var_be.^2+ 2*sqrt(Pb*Px*var_ab*var_ae))));
Thanks
Walter Roberson
Walter Roberson 2015-6-4
Px(var_ab _ var_ae) is not valid syntax. Possibly you meant
Px(var_ab - var_ae)
If so then you would be attempting to subtract the two variables and use the result to index the array "Px".
Possibly you intended multiplication,
Rx = log2((1 + Px*(var_ab - var_ae)+(1 +var_ae*Pw +Pb*var_be.^2+ 2*sqrt(Pb*Px*var_ab*var_ae))));
Image Analyst
Image Analyst 2015-6-4

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