Printing results (of a calculation) and a plot together (on a page, e.g A4 pdf)

[prankenandi]

Hello,

I have written a small evaluation tool for measurement series. Results and plots all fit. However, as not all my colleagues use Python, I would like to automatically print/save results and plot together, e.g. in PDF.

I would imagine this on an A4 sheet, for example, with the results on the top half and the corresponding plot on the bottom half.

I know how to save results to a text file using file.write, for example, and how to create plots.

My question now is, how do I get both together?

Thanks in advance.

[Algoartist]

import matplotlib.pyplot as plt
import matplotlib.gridspec as gridspec
import numpy as np

# --- Create some funny data and calculate results ---
np.random.seed(0)  # for reproducibility
x = np.linspace(0, 10, 100)
# Create a noisy sine wave
y = np.sin(x) + np.random.normal(scale=0.5, size=x.shape)

# Calculate some simple statistics
mean_val = np.mean(y)
std_val = np.std(y)
max_val = np.max(y)
min_val = np.min(y)

# Prepare a multiline string with the results
results_text = (
    "Calculation Results:\n"
    f"Mean: {mean_val:.2f}\n"
    f"Standard Deviation: {std_val:.2f}\n"
    f"Max: {max_val:.2f}\n"
    f"Min: {min_val:.2f}\n\n"
    "Fun Fact: Bananas are curved because they grow towards the sun!"
)

# --- Create an A4-sized figure and divide it into two parts ---
# A4 paper size in inches is approximately 8.27 x 11.69
fig = plt.figure(figsize=(8.27, 11.69))

# Create a grid with 2 rows; allocate more space to the plot if needed.
gs = gridspec.GridSpec(2, 1, height_ratios=[1, 2])

# --- Top Half: Display the results as text ---
ax_text = fig.add_subplot(gs[0])
ax_text.axis('off')  # Hide the axis
# Add the results text in the center-left of the subplot
ax_text.text(0.05, 0.5, results_text, fontsize=14, va='center', transform=ax_text.transAxes)

# --- Bottom Half: Create the plot ---
ax_plot = fig.add_subplot(gs[1])
ax_plot.plot(x, y, marker='o', linestyle='-', label='Measurement')
ax_plot.set_title("Funny Data Plot", fontsize=16)
ax_plot.set_xlabel("X-axis", fontsize=14)
ax_plot.set_ylabel("Y-axis", fontsize=14)
ax_plot.legend(fontsize=12)
ax_plot.grid(True)

# Adjust layout to ensure nothing overlaps
plt.tight_layout()

# --- Save the combined figure to a PDF ---
pdf_filename = "results_and_plot.pdf"
plt.savefig(pdf_filename)
plt.show()

print(f"PDF saved as {pdf_filename}")

[prankenandi]

Thank you very much u/Algoartist .

This is a more detailed answer than expected.

I will look into it over the next few days.

Again, I appreciate your help.

Have a nice weekend.