import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import sys

filename = sys.argv[1]
size = sys.argv[2]
if len(sys.argv) > 3:
    subtitle = sys.argv[3]
else:
    subtitle = ""

df = pd.read_csv(filename, header=None)

height, width = df.shape

data = df.to_numpy()

plt.imshow(data, cmap='coolwarm_r', interpolation='nearest')

plt.xticks(np.arange(width), np.arange(width))
plt.yticks(np.arange(height), np.arange(height))

plt.xlabel('X Pos')
plt.ylabel('Y Pos')
plt.suptitle('Heatmap of Motor Data (Bins: {})'.format(size), fontsize=16)
plt.title(subtitle, fontsize=11)

plt.gca().invert_yaxis()

cbar = plt.colorbar()
cbar.ax.set_ylabel("Bad (Red)    /    Good (Blue)", fontsize=10)

plt.savefig("heatmap{}.png".format(size))