| equrec | Equalize values of data records |
| -d <data> | data frame to be preprocessed |
| -dout <dataout> | name of the preprocessed data frame |
| [-min <minval>] | minimum value for target range (default 0) |
| [-max <maxval>] | maximum value for target range (default 1) |
| [-global] | should variance and average be used or just minimum and maximum |
This operation equalizes values of each data record into range [minval,maxval]. In the normal case, it first locates the minimum and the maximum values from each data record and then all the values are scaled linearly from [min,max] to the specified (or unit) range. If -global is specified, the operation first calculates the variance of data record average values and then updates the values with the following equation:
The specifed minval and maxval have no effect in this mode.
For an example, see concseq (section 3.18).