APPEND

If APPEND is specified, then a new data set is created, containing the result and n1 is unchanged.

CHECK

CHECK=OFF turns off data set checking. When CHECK=ON both data sets must have identical X (and Y if mesh) values, but data set n2 may contain more points than n1. If (DX/DY) is non zero then the both DX and X must be identical within 1% of DX. If you have data sets with non identical values of X you may create a set with identical values using the BIN command. If the X values of 2 data sets are not quite identical. You may force TOPDRAWER to divide them by setting DX for the data 100 times greater than the difference in X or by setting CHECK=OFF

EFFICIENCY

If EFFICIENCY is specified, the data is treated as an efficiency. That is set n1 contains the number of successes, while n2 contains the number of trials. The result has error bars (DY) which follow a binomial distribution. See:Command ADD,MULTIPLY.

ERROR

ERROR=OFF excludes the errors from the FIT in the computation. (Default:ERROR=ON)

FIT

Specifies that the data set is to be divided by the last FIT. See:Command FIT.

LIMITED

You may specify the limits over which the histograms are to be divided. If you specify the Y or Z limits, then all data that contains values inside these limits will be divided. For example if you DIVIDE 1 by 2 LIMITED FROM Y=10 to Y=11 But data set 1 contains the followind data: 1,0; 2,10; 3,0; 4,11; 5,0 Points 2 to 4 inclusive will be divided, and only points 1 and 5 will be omitted.

LOG

If LOG is specified then the result of the command is typed on your terminal.

WEIGHT-EWEIGHT

WEIGHT=n specifies a weighting factor to multiply the data by before adding or subtracting it. EWEIGHT=n specifies the error on WEIGHT. This option must precede the data set number.

notes

If EFFICIENCY is not specified then the new value is Y3=Y1/Y2. If Y2 is zero then Y3 is set to 0.0. The errors (DY) are treated as if the data sets are uncorrelated, if BINOMIAL is not specified.