How do I get hmmestimate to work correctly?

Hello all,

I'm attempting to take a sequence of observations and associated states and perform [TRANS,EMIS] = hmmestimate(observations,states) so that I can use this to predict the next occurrence.

where observations are temperatures > 0, to 3 decimal places

and states are either -1,0, or 1, depending on whether or not the associated observation is below, equal to, or above a desired setpoint, or reference condition.

However, all I get is this!!

Warning: Size vector should be a row vector with integer elements. > In hmmestimate at 139 In HMM1 at 22 Attempted to access E(2,22.319); index must be a positive integer or logical.

Error in hmmestimate (line 146) E(states(count),seq(count)) = E(states(count),seq(count)) + 1;

Error in HMM1 (line 22) [TRANS,EMIS] = hmmestimate(T,cond);

22.319 is the first temperature in my array. Someone please explain to me what I'm doing wrong!!!