How to separate string data and convert it to number?

I have a problem to separate this data BE1234U1234 which B is the begin of counting real time count for sensor, i.e. encoder motor and ultrasonic distance, E for encoder, and U for ultrasonic distance.

I'm using Altera to acquired data and read it to MATLAB. But I can only separate the data from B1234E for encoder only. How can I read and separate the data into 1234 for encoder and 1234 for ultasonic distance respectively?

Thank You,

Setiawan

Answer 1

[Stephen23]

>> str = 'BE1234U1234';
>> sscanf(str,'BE%dU%d')
ans =
   1234
   1234

for example:

>> str = 'BE1234U5678';
>> vec = sscanf(str,'BE%dU%d');
>> enc = vec(1)
enc =  1234
>> ult = vec(2)
ult =  5678

[Setiawan Putra Hendratno]

How if the data is modified to 1234-1234 in Altera?

Answer 2

[Vandana Rajan]

Hi,

' ismember ' function can help you here.

>> [e_val, e_pos] = ismember('E',c);
>> [u_val, u_pos] = ismember('U',c);
>> enc_val = c(e_pos+1:u_pos-1)

enc_val =

1234

>> ultra_val = c(u_pos+1:end)

ultra_val =

1234

[Stephen23]

The question asks "convert it to number", but this answer does not convert the string data to numeric.

[Setiawan Putra Hendratno]

At least I can separate the data. Thank you. I'll try it in my supervisor's lab.

[Vandana Rajan]

@Stephen Cobeldick,

Yeah. I missed that part. Thanks for mentioning that :)