nodes/HowToSD-ComfyUI-Data-Analysis
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Added Show Text, Columns, Index nodes

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HowToSD
2025-02-14 11:14:31 -08:00
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@@ -3,6 +3,8 @@
### How DataFrames is passed between nodes
DataFrames are transmitted as JSON strings. When a DataFrame enters a node, it is reconstructed by deserializing the JSON string. Upon exiting, it is serialized back into a JSON string.
Pandas's Index object is also processed the same way. For example, Pandas Columns and Pandas Index node return labels in a serialized Index format.
### How to connect nodes for DataFrame JSON strings
To connect the DataFrame JSON string output from one Pandas node to another, move the wire toward the top-left of the text field. You may need to hover around the corner to find the correct connection point.
@@ -13,11 +15,14 @@ You can right-click, select **Add Node**, go to **Data Analysis**, and look for
|-------------------------|-------------------------------------|
| **Pandas Load CSV** | Load a CSV file |
| **Pandas Save CSV** | Save a DataFrame to a CSV file |
| **Pandas Columns** | Extract column labels |
| **Pandas Index** | Extract row labels (index) |
| **Pandas Select Columns** | Select specific columns from a DataFrame |
| **Pandas Select Rows** | Filter rows based on conditions |
| **Pandas Join** | Join two DataFrames |
| **Pandas Head** | Extract the first few rows |
| **Pandas Show DataFrame** | Display DataFrame contents |
| **Pandas Show Text** | Display Text |
| **Pandas Summary** | Show DataFrame statistics |
| **Pandas Sort** | Sort DataFrame by a column |
| **Pandas To String** | Convert DataFrame to a string |
@@ -39,6 +44,11 @@ CSV file path is relative to the ComfyUI installation directory unless you speci
## Saving data
Use **Pandas Save CSV** node to save the DataFrame to a CSV file.
## Extracting column and row labels
Use **Pandas Columns** and **Pandas Index** nodes. As these nodes outputs JSON-serialized Index object, to display the value, use **Pandas Show Text** node as shown below:
![Pandas Columns and Pandas Index](images/columns_index.png)
## Selecting columns and rows
Use **Pandas Select Columns** for selecting columns, **Pandas Select Rows** to select rows by a filter condition.
@@ -71,6 +81,13 @@ The workflow file examples/workflows/join.json contains all of the above cases.
## Extract the first few rows
Use **Pandas Head**.
## Display text ##
Use **Pandas Show Text** node.
Currently this node is using the code taken from ComfyUI-Custom-Scripts's Show Text custom node (
https://github.com/pythongosssss/ComfyUI-Custom-Scripts/blob/main/py/show_text.py).
This node has been copied to display text without requiring the user to install the above custom nodes package. However, if you already have ComfyUI-Custom-Scripts, you can also use the Show Text node from the package.
## Displaying DataFrame contents
Use **Pandas Show DataFrame** node. When the number of rows is large, Pandas automatically hides middle rows during string conversion, so the display size should be always manageable.