Create Viz

What This Skill Does

This skill creates publication-quality data visualizations using Python, focusing on clarity, accuracy, and design best practices. It's useful for anyone needing to generate charts for presentations, reports, or dashboards.

When to Use

Generate a line chart to show trends over time. Create a bar chart to compare categories. Visualize part-to-whole composition with a stacked bar chart. Display the distribution of values with a histogram. Show the correlation between two variables with a scatter plot. Create visualizations for reports and presentations.

Key Features

Understands the request and data source. Selects the appropriate chart type. Connects to data warehouses to query data. Parses and cleans uploaded data. Uses Python libraries like matplotlib and seaborn. Generates publication-quality visualizations.

Manual Installation

• Manual installation
• View Full Skill Content
• The complete markdown content that gets installed/create-viz - Create Visualizations

If you see unfamiliar placeholders or need to check which tools are connected, see CONNECTORS.md.

Create publication-quality data visualizations using Python. Generates charts from data with best practices for clarity, accuracy, and design.

Usage

/create-viz <data source> [chart type] [additional instructions]

Workflow

1. Understand the Request

Determine:

Data source: Query results, pasted data, CSV/Excel file, or data to be queried Chart type: Explicitly requested or needs to be recommended Purpose: Exploration, presentation, report, dashboard component Audience: Technical team, executives, external stakeholders

2. Get the Data

If data warehouse is connected and data needs querying: Write and execute the query

• Load results into a pandas Data
• Frame

If data is pasted or uploaded:

• Parse the data into a pandas Data
• Frame Clean and prepare as needed (type conversions, null handling)

If data is from a previous analysis in the conversation: Reference the existing data

3. Select Chart Type

If the user didn't specify a chart type, recommend one based on the data and question:

Explain the recommendation briefly if the user didn't specify.

4. Generate the Visualization

Write Python code using one of these libraries based on the need:

matplotlib + seaborn: Best for static, publication-quality charts. Default choice. plotly: Best for interactive charts or when the user requests interactivity.

Code requirements:

import matplotlib.pyplot as plt import seaborn as sns import pandas as pd

Set professional style plt.style.use('seaborn-v0_8-whitegrid') sns.set_palette("husl")

Create figure with appropriate size fig, ax = plt.subplots(figsize=(10, 6))

[chart-specific code]

Always include: ax.set_title('Clear, Descriptive Title', fontsize=14, fontweight='bold') ax.set_xlabel('X-Axis Label', fontsize=11) ax.set_ylabel('Y-Axis Label', fontsize=11)

Format numbers appropriately

• Percentages: '45.2%' not '0.452'
• Currency: '$1.2M' not '1200000'
• Large numbers: '2.3K' or '1.5M' not '2300' or '1500000'

Remove chart junk ax.spines['top'].set_visible(False) ax.spines['right'].set_visible(False)

plt.tight_layout() plt.savefig('chart_name.png', dpi=150, bbox_inches='tight') plt.show()

5. Apply Design Best Practices

Color: Use a consistent, colorblind-friendly palette Use color meaningfully (not decoratively) Highlight the key data point or trend with a contrasting color Grey out less important reference data

Typography: Descriptive title that states the insight, not just the metric (e.g., "Revenue grew 23% YoY" not "Revenue by Month") Readable axis labels (not rotated 90 degrees if avoidable) Data labels on key points when they add clarity

Layout: Appropriate whitespace and margins Legend placement that doesn't obscure data Sorted categories by value (not alphabetically) unless there's a natural order

Accuracy: Y-axis starts at zero for bar charts No misleading axis breaks without clear notation Consistent scales when comparing panels Appropriate precision (don't show 10 decimal places)

6. Save and Present

Save the chart as a PNG file with descriptive name Display the chart to the user Provide the code used so they can modify it Suggest variations (different chart type, different grouping, zoomed time range)

Examples

/create-viz Show monthly revenue for the last 12 months as a line chart with the trend highlighted

/create-viz Here's our NPS data by product: [pastes data]. Create a horizontal bar chart ranking products by score.

/create-viz Query the orders table and create a heatmap of order volume by day-of-week and hour

Tips

If you want interactive charts (hover, zoom, filter), mention "interactive" and Claude will use plotly Specify "presentation" if you need larger fonts and higher contrast You can request multiple charts at once (e.g., "create a 2x2 grid of charts showing...") Charts are saved to your current directory as PNG files/create-viz - Create Visualizations

If you see unfamiliar placeholders or need to check which tools are connected, see CONNECTORS.md.

Create publication-quality data visualizations using Python. Generates charts from data with best practices for clarity, accuracy, and design.

Usage

/create-viz <data source> [chart type] [additional instructions]

Workflow

1. Understand the Request

Determine:

Data source: Query results, pasted data, CSV/Excel file, or data to be queried Chart type: Explicitly requested or needs to be recommended Purpose: Exploration, presentation, report, dashboard component Audience: Technical team, executives, external stakeholders

2. Get the Data

If data warehouse is connected and data needs querying: Write and execute the query

• Load results into a pandas Data
• Frame

If data is pasted or uploaded:

• Parse the data into a pandas Data
• Frame Clean and prepare as needed (type conversions, null handling)

If data is from a previous analysis in the conversation: Reference the existing data

3. Select Chart Type

If the user didn't specify a chart type, recommend one based on the data and question:

Explain the recommendation briefly if the user didn't specify.

4. Generate the Visualization

Write Python code using one of these libraries based on the need:

matplotlib + seaborn: Best for static, publication-quality charts. Default choice. plotly: Best for interactive charts or when the user requests interactivity.

Code requirements:

import matplotlib.pyplot as plt import seaborn as sns import pandas as pd

Set professional style plt.style.use('seaborn-v0_8-whitegrid') sns.set_palette("husl")

Create figure with appropriate size fig, ax = plt.subplots(figsize=(10, 6))

[chart-specific code]

Always include: ax.set_title('Clear, Descriptive Title', fontsize=14, fontweight='bold') ax.set_xlabel('X-Axis Label', fontsize=1