Скачать или смотреть How to Fix Spotfire IronPython Filter Issues After Script Execution

Discover effective solutions for the common issue where filters disappear in Spotfire after executing an IronPython script. Learn how to ensure your visualizations and filters work seamlessly together.
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This video is based on the question https://stackoverflow.com/q/76708187/ asked by the user 'intergalactic' ( https://stackoverflow.com/u/22141783/ ) and on the answer https://stackoverflow.com/a/76710815/ provided by the user 'Gaia Paolini' ( https://stackoverflow.com/u/10963215/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Spotfire IronPython Filter Issue

When working with Spotfire, a commonly encountered problem arises when running a data table through an IronPython script: the filters you expect to see can mysteriously disappear. In this guide, we will explore both the problem and its solution in a straightforward manner.

One user reported that after executing a script to format visualizations, they received an "Internal Server Error" and noticed that the filter items in the filter bar on the right vanished. Let’s delve into the details of this issue, understand the code, and discover how to fix it.

The Problem: Filters Disappearing in Spotfire

The user shared their experience where executing a script designed to format their visualizations led to the following error message:

[[See Video to Reveal this Text or Code Snippet]]

This error indicates that the script is not just failing at execution but is also affecting the underlying data table's filters, causing them to disappear.

Analyzing the Script

To better understand why the issue occurred, let’s take a closer look at the original script used by the user. Here is a simplified overview of the operations in the script:

A new page was created in the Spotfire Document.

Multiple visualizations (ScatterPlots) were added to the page using the input data table.

The layout of visualizations was defined and applied.

Key Issues Identified

Indentation Errors: Proper indentation is crucial in Python, as it defines the logical grouping of statements.

Improper Use of Escape Characters: The initial script relied on backslashes that complicated the readability and functionality.

Index Out of Range: This could occur if the list of visualizations (lst) was not being correctly populated.

The Solution: Modified Script

After rectifying the issues identified, the user found a solution by implementing the following modifications. Here's the corrected script:

[[See Video to Reveal this Text or Code Snippet]]

Key Modifications Made

Removing Escape Characters: The unnecessary backslashes were eliminated, clarifying the syntax.

Auto Configuration: Introducing page.AutoConfigure() ensures the filter panel is set to visible when the new page is created.

Streamlined Visual Creation: Using a loop to create visualizations reduced redundancy in the code, making it cleaner and easier to manage.

Conclusion

If you ever find yourself with disappearing filters after executing an IronPython script in Spotfire, review your script for common errors such as incorrect indentation, unnecessary escape characters, and ensure that your visualizations are correctly populated. By addressing these factors and adopting the solution provided, you can effectively prevent or resolve similar issues. Happy coding!