String Functions

CalcTree supports a small but useful set of string formatting and conversion functions. These are most commonly used in:

• Dynamic report labels

• Unit formatting

• Conditional text

• String-based output templates

Formatting & Conversion

Function	Description	CalcTree Example
format(value [, precision])	Convert a value to string	format(1/3, 3) → "0.333"
print(template, values)	Interpolate values into a string	print("E = {x} MPa", {x: 200}) → "E = 200 MPa"
bin(value)	Convert number to binary string	bin(8) → "0b1000"
hex(value)	Convert number to hexadecimal	hex(255) → "0xff"
oct(value)	Convert number to octal	oct(8) → "0o10"

Typical Engineering Use Cases

Scenario	Usage Example
Add units to calculated values	print("Result = {x} kN", {x: round(result, 1)})
Create table labels dynamically	print("Section {n}", {n: 3})
Format values to fixed decimals	format(stress, 2) → "12.34"
Generate binary/hex representations	hex(255) → "0xff" (e.g. for bit flags)

Notes for CalcTree

• Use print(...) for multi-value string templates. All placeholders use {key} notation.

• format(...) does not attach units — it only handles number precision.

• All string outputs can be used in parameter displays, print blocks, or conditional logic.

📘 Looking for more functions? CalcTree’s expression engine is powered by MathJS. For a full list of available functions, visit the MathJS Function Reference. Most functions listed there are supported in CalcTree unless otherwise noted.