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improved readability in last-7.png with better date format

This commit is contained in:
simon 2021-03-26 14:15:45 +07:00
parent d122bda8b6
commit 05a71389cd
1 changed files with 3 additions and 3 deletions
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6
backend/flask/app/graph.py
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@ -106,15 +106,15 @@ def rebuild_7days(config):
rows = cur.fetchall()
db_close(conn, cur)
# title
date_from = datetime.fromtimestamp(rows[-1][0]).strftime('%Y-%m-%d')
date_until = datetime.fromtimestamp(rows[0][0]).strftime('%Y-%m-%d')
date_from = datetime.fromtimestamp(rows[-1][0]).strftime('%d %b')
date_until = datetime.fromtimestamp(rows[0][0]).strftime('%d %b')
plt_title = f'AQI values from: {date_from} until {date_until}'
# build axis of plot
x, y_1, y_2 = build_last7_plt(rows)
# make ticks
x_range = np.arange(0, 84, step=12)
x_date_time = pd.to_datetime(x).dt.date.unique()
x_dates = np.asarray([i.strftime('%Y-%m-%d') for i in x_date_time])
x_dates = np.asarray([i.strftime('%d %b') for i in x_date_time])
x_ticks = x_range, x_dates
# write the plot
write_last7_plt(x, y_1, y_2, x_ticks, plt_title)