Py2Tab

Py2Tab is a simple tool to generate custom Tableau color palettes from Matplotlib colormaps.

Installation

1. Clone the repository:

   git clone <repository_url>
   cd Py2Tab

2. Install the required dependencies:

   pip install -r requirements.txt

Usage

Run the script from the command line:

python cm_to_tableau.py <colormap_name> [-n <number_of_colors>] [-o <output_file>]

Examples

Generate a palette from the "plasma" colormap with 12 colors (default):

python cm_to_tableau.py plasma

Generate a palette from "viridis" with 20 colors:

python cm_to_tableau.py viridis -n 20

List available colormaps:

python cm_to_tableau.py --list

How to use in Tableau

The script generates a text file (default: colormap_colors.txt) containing an XML snippet like this:

<color-palette name="plasma" type="ordered-diverging">
  <color>#0d0887</color>
  <color>#3e049c</color>
  <!-- ... more colors ... -->
  <color>#f0f921</color>
</color-palette>

To use this palette in Tableau:

1. Locate your My Tableau Repository folder (usually in Documents/My Tableau Repository).
2. Open the Preferences.tps file in a text editor.
3. Paste the generated <color-palette>...</color-palette> block inside the <preferences>...</preferences> tags.
4. Restart Tableau. The new palette will appear in the color selection menu.

About the Author

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