Call: BOOK_HISTOGRAM: options

AUTOSCALE

Requests automatic computation of the histogram range.

When this option is in effect, a rough range is set to

     [mean - 3*RMS, mean + 3*RMS]

where the mean and the RMS are computed from the first n_bin/2 entries, with n_bin is the number of bins.

The range is then enlarged a bit by rounding the limits to 1, 2 or 5 times a power of 10. If in addition the INTEGER option has been set, then the range limits are rounded to integer numbers.

An histogram can not be used in arithmetic operations as long as the range has not been set.

The options MANUAL and AUTOSCALE are mutually exclusive.

[Default: The automatic range option is off by default but is implied if minimum and maximum are not specified.]

INTEGER

Requests the bin width of the histogram to be an integer value. The smallest possible bin size is therefore 1. The bins will be aligned such that integer numbers fall in the middle of the bins.

The INTEGER/REAL setting only has effect when the range is established automatically.

[Default is REAL]

MANUAL

Requests the histogram range as specified in the argument list be respected, i.e. the range is not automatically computed and the specified range is not rounded.

When MANUAL is in effect, the histogram can be used in arithmetic expressions from the moment it has been booked.

The options MANUAL and AUTOSCALE are mutually exclusive.

[This is default if a range is specified.]

REAL

Allows the bin width to be a non-integer number. The automatic scaling algorithm rounds the range limits to multiples 1, 2 or 5 times a power of 10.

The INTEGER/REAL setting only has effect when the range is established automatically.

[This is default.]

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Formatted on 21/01/18 at 16:55.