Built-in min() function has stopped working.

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Something has caused my minimum function to quit working out of the blue. I was working in 2011b. With a vector of double-precision data, max(data) returns the maximum value and min(data) returns the error "Index exceeds matrix dimensions."

I tested it on other vector data that I generated with data = randi(100,1) and with data = 1:1:100; same results.

I restarted Matlab and the computer and it still happens. I installed a fresh copy of 2013b and it still happens. What could be going on here?

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John 2014-4-4

>> which min -all min is a variable. built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun@logical\min) % Shadowed logical method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@char\min) % Shadowed char method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@double\min) % Shadowed double method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@uint8\min) % Shadowed uint8 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@uint16\min) % Shadowed uint16 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@uint32\min) % Shadowed uint32 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@uint64\min) % Shadowed uint64 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@int8\min) % Shadowed int8 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@int16\min) % Shadowed int16 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@int32\min) % Shadowed int32 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@int64\min) % Shadowed int64 method built-in (C:\Program Files\MATLAB\R2011b\toolbox\matlab\datafun\@single\min) % Shadowed single method C:\Program Files\MATLAB\R2011b\toolbox\distcomp\parallel\@codistributed\min.m % Shadowed codistributed method C:\Program Files\MATLAB\R2011b\toolbox\mbc\mbcmodels\@localpspline\min.m % Shadowed localpspline method C:\Program Files\MATLAB\R2011b\toolbox\mbc\mbcmodels\@localpoly\min.m % Shadowed localpoly method C:\Program Files\MATLAB\R2011b\toolbox\shared\statslib\@ordinal\min.m % Shadowed ordinal method C:\Program Files\MATLAB\R2011b\toolbox\matlab\timeseries\@timeseries\min.m % Shadowed timeseries method