Skipping first bytes in a binary file using FREAD
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I need to skip the first four bytes of a binary file using FREAD, but have not come up with a means to do so. Does anyone have any suggestions? Thanks, Josh
回答（2 个）
Walter Roberson
2011-5-2
fread(fid,4,'*uint8');
and don't do anything with the result.
1 个评论
Jan
2011-5-3
+1: FREAD has two advantages compared to FSEEK: 1. to my surprise it is faster, 2. it is *never* stopped by the OS, while FSEEK can be breaked in a multi-threaded environment in case of heavy system load. Both effects appear at least in Matlab 6.5 to 2009a and do *not* matter if you skip just 4 bytes. But if you skip some MB, be sure to catch the reply of FSEEK to check for an incomplete processing! While the underlying fseek of the runtime-libs reply the number of moved bytes, such that the processed can be finished iteratively even for relative movement, Matlab's FSEEK replies a flag only.
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