`<sequence>`

Generates a sequence of numbers, math expressions, or letters

<sequence> is a Math component that generates a sequence of numbers, math expressions, or letters.

Attributes and Properties

Attributes for `<sequence>`

Highlighted (6)

asList

boolean. Default value: true. Whether to render the items separated by commas (true) or with no separator (false).

from

_componentWithSelectableType. The first value in the sequence.

length

integer. The number of values in the sequence.

step

math. The increment between successive values in the sequence.

to

_componentWithSelectableType. The last value in the sequence. Used together with from to determine length when length is not specified.

type

keyword. The kind of values in the sequence.

Value	Description
`number`	A sequence of numeric values.
`math`	A sequence of math expressions (allows symbolic from/to/step).
`letters`	A sequence of letters (single-letter or multi-letter labels).

Number display (5)

avoidScientificNotationAdded in 0.7.16

boolean. Default value: false. Whether to render numbers in full decimal form rather than scientific notation.

displayDecimals

integer. Default value: 2. Number of decimal places to display when rendering this number.

displayDigits

integer. Default value: 3. Number of significant digits to display when rendering this number.

displaySmallAsZero

number. Default value: 1e-14. Threshold below which numbers are displayed as zero.

padZeros

boolean. Default value: false. Whether to pad displayed numbers with trailing zeros to fill the requested digits/decimals.

Other (1)

exclude

_componentListWithSelectableType. Values to exclude from the sequence.

Common to all components (9)

copy

reference. Create an independent copy of another component by reference. Enter a references a $name.

disabled

boolean. Default value: false. Whether this component is disabled and cannot be interacted with.

extend

reference. Extend another component by reference, inheriting its children and attributes. Enter a reference as $name.

fixed

boolean. Default value: false. Whether this component's value is fixed and cannot be modified.

fixLocation

boolean. Default value: false. Whether this component's location is fixed (preventing it from being moved while still allowing other modifications).

hide

boolean. Default value: false. Whether to hide this component from the rendered output.

isResponse

boolean. Default value: false. Whether this component is treated as a response for the purposes of assessment.

name

text. The name used to reference this component from elsewhere in the document.

styleNumber

integer. Default value: 1. The style number used to select this component's visual styling from the available style definitions.

Properties for `<sequence name="s">`

Number display (5)

$s.avoidScientificNotationIn development

boolean. Whether to render numbers in full decimal form rather than scientific notation.

$s.displayDecimalsIn development

integer. Number of decimal places to display when rendering this number.

$s.displayDigitsIn development

integer. Number of significant digits to display when rendering this number.

$s.displaySmallAsZeroIn development

number. Threshold below which numbers are displayed as zero.

$s.padZerosIn development

boolean. Whether to pad displayed numbers with trailing zeros to fill the requested digits/decimals.

Common to all components (8)

$s.disabledIn development

boolean. Whether this component is disabled and cannot be interacted with.

$s.doenetML

text. The DoenetML source code that produced this component.

$s.fixedIn development

boolean. Whether this component's value is fixed and cannot be modified.

$s.fixLocationIn development

boolean. Whether this component's location is fixed (preventing it from being moved while still allowing other modifications).

$s.hiddenIn development

boolean. Whether this component is hidden from the rendered output.

$s.hide

boolean. Whether to hide this component from the rendered output.

$s.isResponse

boolean. Whether this component is treated as a response for the purposes of assessment.

$s.styleNumber

integer. The style number used to select this component's visual styling from the available style definitions.

Examples

Example: Default `<sequence>`

The default <sequence> lists values from $1$ to $10$ with step size $1$ .

Example: Using a `<sequence>` with a `<repeat>`

A <sequence> can be used to define the iteration for a <repeat>. Another way to accomplish this would be to use the <repeatForSequence> component.

Example: the sum of a `<sequence>`

In the sample code below, the sum of all values in a sequence is obtained by nesting the <sequence/> in a <sum> component. This technique works for multiple sequence as well.

Attribute Examples

Attribute Example: from, to

Use the from and to attributes to specify the endpoints of the <sequence>.

Attribute Example: step

Use the step attribute to specify the stepping increment for the <sequence>

Attribute Example: length

Use the length attribute to specify the number of terms in the <sequence>.

Attribute Example: exclude

The exclude attribute excludes terms from the <sequence>.

Attribute Example: type

The type attribute takes as an input either number or letters, and defaults to number.

<sequence>