55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
import os
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import pandas as pd
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import matplotlib.pyplot as plt
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import seaborn as sns
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from flask import url_for
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from abc import ABC, abstractmethod
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from .base import BaseAnalysis
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from app.analysis.data_utils import prepare_data, mk_plotdir
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import matplotlib
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matplotlib.use('Agg')
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# -------------------------------------------
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# Base Class for All Plot Analyses
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# -------------------------------------------
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class BasePlotAnalysis(BaseAnalysis, ABC):
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"""
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Base class for all plot-based analyses.
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It enforces a structure for:
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- Data preparation
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- Transformation
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- Plot generation
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- Memory cleanup
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"""
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plot_filename = "default_plot.png"
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alt_text = "Default Alt Text"
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def execute(self, df: pd.DataFrame):
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"""Executes the full analysis pipeline"""
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df = prepare_data(df) # Step 1: Prepare data
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paths = mk_plotdir(self.plot_filename)
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self.output_path, self.plot_url = paths['output_path'], paths['plot_url']
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df = self.transform_data(df) # Step 2: Transform data (implemented by subclass)
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self.plot_data(df) # Step 3: Create the plot
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plt.savefig(self.output_path, bbox_inches="tight")
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plt.close()
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del df # Step 4: Free memory
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return f'<img src="{self.plot_url}" alt="{self.note}">'
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@abstractmethod
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def transform_data(self, df: pd.DataFrame) -> pd.DataFrame:
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"""Subclasses must define how they transform the data"""
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pass
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@abstractmethod
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def plot_data(self, df: pd.DataFrame):
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"""Subclasses must define how they generate the plot"""
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pass
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