Matlab program for finding the real value of a binary value

[v9260019]

Hello everyone

If I want to find the real value of the binary value [1 0 1 0 1 0 1 0] for the range 0~20, and I defind the program as follows:

"function real = GA (bit,range);
deci=polyval(bit,2);
real=deci/(2^length(bit)-1)*(range(2)-range(1))+range(1);"

When I run it ~~~ it seems has some errors:

"??? Input argument "bit" is undefined.

Error in ==> GA at 2
deci=polyval(bit,2);"

What is the problem ????

thanks a lot

 

[mimomod]

A matlab question ??

Hi v9260019,

how did you run the function?

You must define the "bit" value in the argument of the function. So you must run it:
GA([1 0 1 0 10 1 0],[0, 20]);
(I assume the conversion you wrote is correct)

best

 

[v9260019]

A matlab question ??

Thanks mimomod
I got it now~~~~~