Can someone help me how can I fix this code,
I think something wrong or my matplotlib doesn't work properly.
In my cmd I've install MY matplotlib using 'pip install matplotlib'
Then as I follow my lecture in Lynda lecture of Code clinic I got the error message of
the following:
1.First attempt running cmd command in folder as instructed in the lecture
I think something wrong or my matplotlib doesn't work properly.
In my cmd I've install MY matplotlib using 'pip install matplotlib'
Then as I follow my lecture in Lynda lecture of Code clinic I got the error message of
the following:
1.First attempt running cmd command in folder as instructed in the lecture
Error:"File "weather.py", line 14, in <module>
from matplotlib.backends.backend_tkagg import (
ImportError: cannot import name 'NavigationToolbar2TkAgg' from 'matplotlib.backends.backend_tkagg' (C:\Users\Racho\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\matplotlib\backends\backend_tkagg.py)"Error:"Traceback (most recent call last):
File "F:\Lynda\Become a Python Developer\9 Code Clinic\Exercise Files\Ch01\solution\weather.py", line 4, in <module>
import matplotlib
ModuleNotFoundError: No module named 'matplotlib'"#!/usr/bin/python3
""" Weather Statistics by Barron Stone for Code Clinic: Python """
import re
import matplotlib
from csv import DictReader
from datetime import datetime
from tkinter import *
from tkinter import ttk, messagebox
import numpy as np
from matplotlib.dates import date2num, num2date
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import (
FigureCanvasTkAgg, NavigationToolbar2TkAgg)
class WeatherStatistics:
def __init__(self, master):
# load data
datetime_list, barpress_list = [], []
datetime_re = re.compile(r'[\d]{2,4}') # regex to get datetime info
for year in range(2012, 2016):
fname = '..\\resources\\Environmental_Data_Deep_Moor_{0}.txt'.format(year)
print('Loading {0}'.format(fname))
for row in DictReader(open(fname,'r'),delimiter='\t'):
barpress_list.append(float(row['Barometric_Press']))
datetime_list.append(date2num(datetime(*list(map(int, datetime_re.findall(row['date time ']))))))
self.datetime_array = np.array(datetime_list)
self.barpress_array = np.array(barpress_list)
# build the gui
master.title('Weather Statistics')
master.resizable(True, True)
master.state('zoomed')
matplotlib.rc('font', size=18)
f = Figure()
f.set_facecolor((0,0,0,0))
self.a = f.add_subplot(111)
self.canvas = FigureCanvasTkAgg(f, master)
self.canvas.draw()
toolbar_frame = ttk.Frame(master) # needed to put navbar above plot
toolbar = NavigationToolbar2TkAgg(self.canvas, toolbar_frame)
toolbar.update()
toolbar_frame.pack(side=TOP, fill=X, expand=0)
self.canvas._tkcanvas.pack(fill=BOTH, expand=1)
controls_frame = ttk.Frame(master)
controls_frame.pack()
ttk.Label(controls_frame, text = 'Start', font='Arial 18 bold').grid(row=0, column=0, pady=5)
ttk.Label(controls_frame, text = '(YYYY-MM-DD HH:MM:SS)', font='Courier 12').grid(row=1, column=0, padx=50, sticky='s')
self.start = StringVar()
ttk.Entry(controls_frame, width = 19, textvariable=self.start, font='Courier 12').grid(row=2, column=0, sticky='n')
self.start.set(str(num2date(self.datetime_array[0]))[0:19])
ttk.Label(controls_frame, text = 'End', font='Arial 18 bold').grid(row=0, column=1, pady=5)
ttk.Label(controls_frame, text = '(YYYY-MM-DD HH:MM:SS)', font='Courier 12').grid(row=1, column=1, padx=50, sticky='s')
self.end = StringVar()
ttk.Entry(controls_frame, width = 19, textvariable=self.end, font='Courier 12').grid(row=2, column=1, sticky='n')
self.end.set(str(num2date(self.datetime_array[-1]))[0:19])
ttk.Button(controls_frame, text='Update', command=self._update).grid(row=3, column=0, columnspan=2, pady=10)
ttk.Style().configure('TButton', font = 'Arial 18 bold')
self._update()
def _update(self):
# get user input
try:
start_num = date2num(datetime(*list(map(int, re.findall(r'[\d]{1,4}', self.start.get())))))
end_num = date2num(datetime(*list(map(int, re.findall(r'[\d]{1,4}', self.end.get())))))
except Exception as e:
messagebox.showerror(title='Invalid Date Values', message=e)
return
start_idx = np.searchsorted(self.datetime_array, start_num)
end_idx = np.searchsorted(self.datetime_array, end_num)
if end_idx <= start_idx:
messagebox.showerror(title='Invalid Input Values',
message='End Date must be after Start Date')
return
# calculate slope value
dy = self.barpress_array[end_idx] - self.barpress_array[start_idx]
dt = self.datetime_array[end_idx] - self.datetime_array[start_idx]
slope = dy/dt
# plot data & slope line
self.a.clear()
self.a.plot_date(self.datetime_array[start_idx:end_idx],
self.barpress_array[start_idx:end_idx], linewidth=2)
self.a.plot([self.datetime_array[start_idx], self.datetime_array[end_idx]],
[self.barpress_array[start_idx], self.barpress_array[end_idx]],
color='k', linestyle='-', linewidth=2)
self.a.set_ylabel('Barometric Pressure (inHg)')
self.a.set_xlabel('Date')
# add colored slope value to figure
color = 'green' if (slope >= 0) else 'red'
text_x = self.datetime_array[start_idx] + (self.datetime_array[end_idx] - self.datetime_array[start_idx])/2
text_y = self.barpress_array[start_idx] + (self.barpress_array[end_idx] - self.barpress_array[start_idx])/2
self.a.text(text_x, text_y, '{0:.6f} inHg/day'.format(slope),
fontsize=16, horizontalalignment='center',
bbox=dict(facecolor=color))
self.canvas.draw()
def main():
root = Tk()
app = WeatherStatistics(root)
root.mainloop()
if __name__ == "__main__": main()
