Range Float

Functionality

alias: List Range Float

Useful for generating sequences of Float values. The code perhaps describes best what the three modes do:

def frange(start, stop, step):

‘’‘Behaves like range but for floats’‘’ if start == stop:

stop += 1

step = max(1e-5, abs(step)) if start < stop:

while start < stop:

yield start start += step

else:

step = -abs(step) while start > stop:

yield start start += step

def frange_count(start, stop, count):

‘’’ Gives count total values in [start,stop] ‘’’ if count < 2:

yield start

else:

count = int(count) step = (stop - start) / (count - 1) yield start for i in range(count - 2):

start += step yield start

yield stop

def frange_step(start, step, count):

‘’’ Gives count values with step from start’‘’ if abs(step) < 1e-5:

step = 1

for i in range(int(count)):

yield start start += step

Inputs and Parameters

One UI parameter controls the behaviour of this Node; the Range | Count Mode switch. The last input changes accordingly.

Mode	Input	Description
Step	Start	value to start at
	Step	value of the skip distance to the next value. The Step value is considered the absolute difference between successive numbers.
Range	Stop	last value to generate, don’t make values beyond this. If this value is lower than the start value then the sequence will be of descending values.
Count	Count	number of values to produce given Start and Step. Never negative - negative produces an empty list

A word on implementation:

This Node accepts Integers and Floats and lists of them.

Outputs

floats or Integers, in list form.

Examples

Non-vectorized

Float Range _(start, stop, step)_

FloatRange(0.0, 1.1 ,10.0) >>> [0.0, 1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9]

FloatRange(0.0 ,2.2, 10.0) >>> [0.0, 2.2, 4.4, 6.6, 8.8]

FloatRange(-3.97, 0.97, 6.0) >>> [-3.97, -3.0, -2.029, -1.059, -0.089, 0.88, 1.85, 2.82, 3.79, 4.76, 5.73]

FloatRange(2.0, 1.0, -4.0) >>> [2.0, 1.0, 0.0, -1.0, -2.0, -3.0]

Count Range _(start, stop, count)_

CountRange(0.0, 1.0, 5) >>> [0.0, 1.0, 2.0, 3.0, 4.0]

CountRange(0.0, 2.5, 5) >>> [0.0, 0.625, 1.25, 1.875, 2.5]

CountRange(-4.0, 1.2, 6) >>> [-4.0, -2.96, -1.91, -0.879, 0.16, 1.2]

CountRange(2.0, 1.0, 4) >>> [2.0, 1.6, 1.3, 1.0]

Step Range _(start, step, count)_

StepRange(0.0, 1.0, 10) >>> [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]

StepRange(0.0, 2.4, 5) >>> [0.0, 2.4, 4.8, 7.2, 9.6]

StepRange(-4.0, 1.2, 6) >>> [-4.0, -2.8, -1.6, -0.4, 0.8, 2.0]

StepRange(2.0, 1.0, 4) >>> [2.0, 3.0, 4.0, 5.0]

Vectorized

Progress Thread for the IntRange in the issue tracker shows several examples.