ComfyUI Node: Math Expression 🐍

Math Expression 🐍| Math Expression 🐍:

The MathExpression| Math Expression 🐍 node is designed to evaluate mathematical expressions dynamically within the ComfyUI framework. This node allows you to input complex mathematical formulas and compute their results, making it a powerful tool for AI artists who need to perform calculations on-the-fly. The node supports a wide range of mathematical operations, including basic arithmetic, comparisons, and logical operations. It can handle variables and constants, providing flexibility in defining expressions. The primary goal of this node is to simplify the process of integrating mathematical logic into your AI art workflows, enabling more sophisticated and precise control over your creative outputs.

Math Expression 🐍| Math Expression 🐍 Input Parameters:

expression

The expression parameter is a string that contains the mathematical formula you want to evaluate. This formula can include variables, constants, and a variety of operators such as addition, subtraction, multiplication, division, and more. The expression is parsed and evaluated in real-time, allowing for dynamic calculations based on the provided inputs. There are no strict minimum or maximum values for this parameter, but the expression must be syntactically correct and valid within the context of the supported operations.

prompt

The prompt parameter is a string that provides additional context or information that might be used within the expression. This can be useful for incorporating dynamic data or references into your calculations. The prompt helps in customizing the evaluation process based on specific needs or scenarios.

extra_pnginfo

The extra_pnginfo parameter is a dictionary that can hold extra metadata or information that might be relevant to the evaluation of the expression. This can include various attributes or properties that the expression might reference. It allows for more complex and context-aware calculations.

a, b, c

The a, b, and c parameters are optional variables that can be used within the expression. These variables can hold numerical values that the expression will use during its evaluation. They provide a way to pass dynamic data into the expression, making it more flexible and adaptable to different situations.

Math Expression 🐍| Math Expression 🐍 Output Parameters:

ui

The ui output parameter is a dictionary that contains the result of the evaluated expression. Specifically, it includes a key value which holds a list with the computed result. This output is useful for displaying the result within the user interface or for further processing within the workflow.

result

The result output parameter is a tuple that contains the evaluated result in both integer and float formats. This dual-format output ensures compatibility with various downstream processes that might require the result in a specific numerical type. It provides a straightforward way to access the computed value for further use.

Math Expression 🐍| Math Expression 🐍 Usage Tips:

• Ensure that your mathematical expression is syntactically correct and valid within the supported operations to avoid errors during evaluation.
• Utilize the a, b, and c parameters to pass dynamic values into your expression, allowing for more flexible and adaptable calculations.
• Leverage the extra_pnginfo parameter to include additional context or metadata that might be relevant to your expression, enabling more complex and context-aware evaluations.

Math Expression 🐍| Math Expression 🐍 Common Errors and Solutions:

Name not found: <variable_name>

• Explanation: This error occurs when the expression references a variable that is not defined or passed into the node.
• Solution: Ensure that all variables used in the expression are defined and passed as input parameters to the node.

Invalid function call: <function_name>

• Explanation: This error occurs when the expression includes a function call that is not recognized or supported by the node.
• Solution: Verify that the function name is correct and that it is supported by the node. Refer to the documentation for a list of supported functions.

Operator <operator_name> not supported

• Explanation: This error occurs when the expression includes an operator that is not supported by the node.
• Solution: Check the list of supported operators and modify the expression to use only those operators. If a specific operation is required, consider breaking it down into supported operations.

Complex types (LATENT/IMAGE) need to reference their width/height, e.g. <variable_name>.width

• Explanation: This error occurs when the expression references a complex type without specifying an attribute like width or height.
• Solution: Ensure that complex types in the expression are referenced with their specific attributes, such as .width or .height.

Invalid function call: <function_name> requires <number> arguments

• Explanation: This error occurs when the function call in the expression does not have the correct number of arguments.
• Solution: Adjust the function call to include the correct number of arguments as specified in the documentation.