Manually Finding a Motif

[GChims]

Hi Sean

PLEASE KINDLY IGNORE THE QUESTION BELOW AS IT IS CLEARLY EXPLAINED IN THE TUTORIALS BUT I MISSED THE DETAILS. THANKS

This question was asked before but I am not sure it has been answered sufficiently here.

I am struggling to understand the values 643 and 8724 on the piece of code below. I understand 640 is the sub-sequence length and so I guess 643 is obtained by adding the sub-sequence length and the 3 seconds sampling? However, I am completely lost in trying to figure out how the value of 8724 came about.

My apologies if it has been answered already and maybe I didn't see it already. Thanks

m = 640
fig, axs = plt.subplots(2)
plt.suptitle('Steamgen Dataset', fontsize='30')
axs[0].set_ylabel("Steam Flow", fontsize='20')
axs[0].plot(steam_df['steam flow'], alpha=0.5, linewidth=1)
axs[0].plot(steam_df['steam flow'].iloc[643:643+m])
axs[0].plot(steam_df['steam flow'].iloc[8724:8724+m])
rect = Rectangle((643, 0), m, 40, facecolor='lightgrey')
axs[0].add_patch(rect)
rect = Rectangle((8724, 0), m, 40, facecolor='lightgrey')
axs[0].add_patch(rect)
axs[1].set_xlabel("Time", fontsize='20')
axs[1].set_ylabel("Steam Flow", fontsize='20')
axs[1].plot(steam_df['steam flow'].values[643:643+m], color='C1')
axs[1].plot(steam_df['steam flow'].values[8724:8724+m], color='C2')
plt.show()