title: Why am I not able to feed my data series from pandas into calmap.yearplot? Trying to create a calendar heat map
body: <p>Beginner question here.</p>
  <p><strong>What I'm trying to build:</strong>
  A program that takes data from a CSV and creates a calendar heat map from it. I am a language learner (language as in spanish, japanese, etc) and the data set I'm using is a CSV that shows how many hours I spent immersing in my target language per day.
  I want the individual values in the heat map to be the number of hours. Y axis will be days of the week, and x axis will be months.</p>
  <p><strong>What I have tried:</strong>
  I have tried many methods for the past two days (most of them using seaborn), that have all resulted in error-infested spaghetti code...</p>
  <p>The method I'm using <em>today</em> is with calmap. Here is what I have so far:</p>
  <pre><code>import seaborn as sns
  import matplotlib as plt
  import numpy as np
  from vega_datasets import data as vds
  import calmap
  import pandas as pd
  import calplot
  
  
  # importing CSV from google drive
  df = pd.read_csv('ImmersionHours.csv', names=['Type', 'Name', 'Date', 'Time', 'Total Time'])
  
  # deleting extraneous row of data
  df.drop([0], inplace=True)
  
  # making sure dates are in datetime format
  df['Date'] = pd.to_datetime(df['Date'])
  
  # setting the dates as the index
  df.set_index('Date', inplace=True)
  
  
  # the data is now formatted how I want
  
  
  # creating a series for the heat map values
  hm_values = pd.Series(df.Time)
  
  # trying to create the heat map from the series (hm_values)
  calmap.yearplot(data=hm_values, year=2021)
  
  </code></pre>
  <p>and here is a copy of the data set that I imported into Python (for reference) <a href="https://docs.google.com/spreadsheets/d/1owZv0NDLz7S4R5Spf-hzRDGMTCS1FVSMvi0WsZJenWE/edit?usp=sharing" rel="nofollow noreferrer">https://docs.google.com/spreadsheets/d/1owZv0NDLz7S4R5Spf-hzRDGMTCS1FVSMvi0WsZJenWE/edit?usp=sharing</a></p>
  <p>Can someone tell me where I'm going wrong and why the heat map won't show?
  Thank you in advance for any advice/tips/corrections.</p>