bokeh.models.ranges¶
Models for describing different kinds of ranges of values in different kinds of spaces (e.g., continuous or categorical) and with options for “auto sizing”.

class
DataRange
(**kwargs)[source]¶ Bases:
bokeh.models.ranges.Range
A base class for all data range types.
Note
This is an abstract base class used to help organize the hierarchy of Bokeh model types. It is not useful to instantiate on its own.

class
DataRange1d
(*args, **kwargs)[source]¶ Bases:
bokeh.models.ranges.DataRange
An autofitting range in a continuous scalar dimension. The upper and lower bounds are set to the min and max of the data.

bounds
¶ property type:
MinMaxBounds
The bounds that the range is allowed to go to  typically used to prevent the user from panning/zooming/etc away from the data.
By default, the bounds will be None, allowing your plot to pan/zoom as far as you want. If bounds are ‘auto’ they will be computed to be the same as the start and end of the DataRange1d.
Bounds are provided as a tuple of
(min, max)
so regardless of whether your range is increasing or decreasing, the first item should be the minimum value of the range and the second item should be the maximum. Setting min > max will result in aValueError
.If you only want to constrain one end of the plot, you can set min or max to
None
e.g.DataRange1d(bounds=(None, 12))

default_span
¶ property type:
Float
A default width for the interval, in case
start
is equal toend
(if used with a log axis, default_span is in powers of 10).

end
¶ property type:
Float
An explicitly supplied range end. If provided, will override automatically computed end value.

flipped
¶ property type:
Bool
Whether the range should be “flipped” from its normal direction when autoranging.

follow
¶ property type:
Enum
(StartEnd
)Configure the data to follow one or the other data extreme, with a maximum range size of
follow_interval
.If set to
"start"
then the range will adjust so thatstart
always corresponds to the minimum data value (or maximum, ifflipped
isTrue
).If set to
"end"
then the range will adjust so thatend
always corresponds to the maximum data value (or minimum, ifflipped
isTrue
).If set to
None
(default), then autoranging does not follow, and the range will encompass both the minimum and maximum data values.follow
cannot be used with bounds, and if set, bounds will be set toNone
.

follow_interval
¶ property type:
Float
If
follow
is set to"start"
or"end"
then the range will always be constrained to that:abs(r.start  r.end) <= follow_interval
is maintained.

max_interval
¶ property type:
Float
The level that the range is allowed to zoom out, expressed as the maximum visible interval. Note that
bounds
can impose an implicit constraint on the maximum interval as well.

min_interval
¶ property type:
Float
The level that the range is allowed to zoom in, expressed as the minimum visible interval. If set to
None
(default), the minimum interval is not bound.


class
FactorRange
(*args, **kwargs)[source]¶ Bases:
bokeh.models.ranges.Range
A range in a categorical dimension.
In addition to supplying
factors
keyword argument to theFactorRange
initializer, you can also instantiate with the convenience syntax:FactorRange("foo", "bar") # equivalent to FactorRange(factors=["foo", "bar"])
Note
FactorRange
may be renamed toCategoricalRange
in the future.
bounds
¶ property type:
Either
(Auto
,List
(String
),List
(Int
) )The bounds that the range is allowed to go to  typically used to prevent the user from panning/zooming/etc away from the data.
Unlike Range1d and DataRange1d, factors do not have an order and so a min and max cannot be provied in the same way. bounds accepts a list of factors, that constrain the displayed factors.
By default, bounds are
None
, allows unlimited panning or zooming.If
bounds='auto'
, bounds will be the same as factors and the plot will not be able to pan or zoom beyond the first and last items in factors.If you provide a list, then only the factors that are in that list will be displayed on the plot and the plot will not pan or zoom outside the first and last items in the shortened factors list. Note the order of factors is the defining order for your plot.
Values of bounds that are not in factors are acceptable and will simply have no impact on the plot.
Examples:
 Auto behavior:
x_range = FactorRange(factors=[“apples”, “dogs”, “peaches”, “bananas”, “pigs”], bounds=’auto’)
The plot will display all the factors and you will not be able to pan left of apples or right of pigs.
 Constraining behavior:
x_range = FactorRange(factors=[“apples”, “dogs”, “peaches”, “bananas”, “pigs”], bounds=[“apples”, “bananas”, “peaches”])
The plot will display the chart with only the factors [“apples”, “peaches”, “bananas”] (in that order) and the plot will not pan left of apples or right of bananas.

factors
¶ property type:
Either
(List
(String
),List
(Int
) )A list of string or integer factors (categories) to comprise this categorical range.

max_interval
¶ property type:
Int
The level that the range is allowed to zoom out, expressed as the maximum number of visible categories. Note that
bounds
can impose an implicit constraint on the maximum interval as well.


class
Range
(**kwargs)[source]¶ Bases:
bokeh.model.Model
A base class for all range types.
Note
This is an abstract base class used to help organize the hierarchy of Bokeh model types. It is not useful to instantiate on its own.

class
Range1d
(*args, **kwargs)[source]¶ Bases:
bokeh.models.ranges.Range
A fixed, closed range [start, end] in a continuous scalar dimension.
In addition to supplying
start
andend
keyword arguments to theRange1d
initializer, you can also instantiate with the convenience syntax:Range(0, 10) # equivalent to Range(start=0, end=10)

bounds
¶ property type:
MinMaxBounds
The bounds that the range is allowed to go to  typically used to prevent the user from panning/zooming/etc away from the data.
If set to
'auto'
, the bounds will be computed to the start and end of the Range.Bounds are provided as a tuple of
(min, max)
so regardless of whether your range is increasing or decreasing, the first item should be the minimum value of the range and the second item should be the maximum. Setting min > max will result in aValueError
.By default, bounds are
None
and your plot to pan/zoom as far as you want. If you only want to constrain one end of the plot, you can set min or max to None.Examples:
Range1d(0, 1, bounds=’auto’) # Autobounded to 0 and 1 (Default behavior) Range1d(start=0, end=1, bounds=(0, None)) # Maximum is unbounded, minimum bounded to 0

max_interval
¶ property type:
Either
(Float
,TimeDelta
,Int
)The level that the range is allowed to zoom out, expressed as the maximum visible interval. Can be a timedelta. Note that
bounds
can impose an implicit constraint on the maximum interval as well.
