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Can I use 'fopen' to open a file with VAX machine format in MATLAB 2015a?

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Jennifer Davies 2016-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/312137-can-i-use-fopen-to-open-a-file-with-vax-machine-format-in-matlab-2015a

评论： Jan 2018-1-18

采纳的回答： Jan

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I’m trying to run an old script, am I’m getting an error on the following line of code:

fopen(FullFileName,'r','d'); % DEC VAX D floating point and VAX ordering

I think it’s the 'd' input that’s causing a problem, and the error is that this is an invalid machine format.

Google tells me that 'd' once was an option for machine format, but it is not one of the options listed in the help document for fopen in MATLAB 2015a (where the options are 'n' or 'native', 'b' or 'ieee-be', 'l' or 'ieee-le', 's' or 'ieee-be.l64', and 'a' or 'ieee-le.l64').

So could this be a version issue? Does anyone know how I can open files with VAX D floating point and VAX ordering in Matlab 2015a?

Thanks very much

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Yuying Liu 2017-11-21

I've tried this one, but didn't work on my case, do you guys find any other solutions?

Jan 2018-1-18

Please explain "didn't work" with any details.

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采纳的回答

Jan 2016-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/312137-can-i-use-fopen-to-open-a-file-with-vax-machine-format-in-matlab-2015a#answer_243225

Matlab has dropped the VAX formats in R2008b, unfortuantely. It has vanished without a message in the change notes.

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Yuying Liu 2017-11-21

Then what should we do?

Jan 2018-1-18

You have to convert the files or use an old version of Matlab.

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