如何根据 pandas 数据框中的频率创建wordcloud [英] How to create a wordcloud according to frequencies in a pandas dataframe
本文介绍了如何根据 pandas 数据框中的频率创建wordcloud的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我必须画一个词云。 tweets.csv是熊猫数据框,其中有一列名为文本。所绘制的图表并非基于最常用的词语,艰难。
text = df_final.text.values
wordcloud = WordCloud(
#mask = logomask,
max_words = 1000,
width = 600,
height = 400,
#max_font_size = 1000,
#min_font_size = 100,
normalize_plurals = True,
#scale = 5,
#relative_scaling = 0,
background_color ='black',
停用词= STOPWORDS.union(停用词)
).generate(str(text))
图= plt.figure(
图大小=(50,40),
facecolor ='k',
edgecolor ='k ')
plt.imshow(wordcloud,插值='双线性')
plt.axis('off')
plt.tight_layout(pad = 0)
plt.show( )
我的数据框如下:
0 RT @Pontifex_pt:Temos que descobrir as riquezezas ...
1 RT @Pontifex_pt:Todos estamos em viagem rumo ...
2 RT @Pontifex_pt:Unamos asforças,em todos ...
3天@ G eneralMourao:#Segurançapública,preocupa ...
4 RT @ FIFAcom:Brasileirao U-17决赛提供了...
解决方案
设置示例数据框:
- 另请参见
转换
字
count
列到dict
-
WordCloud()。generate_from_frequencies()
需要dict
data = dict(zip(df ['word']。tolist(),df ['count']。tolist()))
打印(数据)
> {'how':7,'are':10,'you':4,'doing':1,'this':20,'afternoon':100}
Wordcloud:
- 使用
.generate_from_frequencies
-
使用图像遮罩:
twitter_mask = np.array(Image.open('twitter.png'))
wc = WordCloud(background_color ='white',width = 800,height = 400,max_words = 200 ,mask = twitter_mask).generate_from_frequencies(data_nyt)
plt.figure(figsize =(10,10))
plt.imshow(wc,插值='双线性')
plt.axis( off)
plt.figure()
plt.imshow(twitter_mask,cmap = plt.cm.gray,插值='双线性')
plt.axis( " off")
plt.show()
I have to plot a wordcloud. 'tweets.csv' is a Pandas dataframe which has a column named 'text'. The plotted graph hasn't been based on the most common words, tough. How can the words sizes be linked to their frequencies in dataframe?
text = df_final.text.values wordcloud = WordCloud( #mask = logomask, max_words = 1000, width = 600, height = 400, #max_font_size = 1000, #min_font_size = 100, normalize_plurals = True, #scale = 5, #relative_scaling = 0, background_color = 'black', stopwords = STOPWORDS.union(stopwords) ).generate(str(text)) fig = plt.figure( figsize = (50,40), facecolor = 'k', edgecolor = 'k') plt.imshow(wordcloud, interpolation = 'bilinear') plt.axis('off') plt.tight_layout(pad=0) plt.show()
My dataframe looks like this:
0 RT @Pontifex_pt: Temos que descobrir as riquezezas ... 1 RT @Pontifex_pt: Todos estamos em viagem rumo ... 2 RT @Pontifex_pt: Unamos as forças, em todos ... 3 RT @GeneralMourao: #Segurançapública, preocupa ... 4 RT @FIFAcom: The Brasileirao U-17 final provided ...
解决方案Setup a Sample DataFrame:
import pandas as pd df = pd.DataFrame({'word': ['how', 'are', 'you', 'doing', 'this', 'afternoon'], 'count': [7, 10, 4, 1, 20, 100]})
Convert the
word
&count
columns to adict
WordCloud().generate_from_frequencies()
requires adict
data = dict(zip(df['word'].tolist(), df['count'].tolist())) print(data) >>> {'how': 7, 'are': 10, 'you': 4, 'doing': 1, 'this': 20, 'afternoon': 100}
Wordcloud:
- use
.generate_from_frequencies
generate_from_frequencies(frequencies, max_font_size=None)
from wordcloud import WordCloud wc = WordCloud(width=800, height=400, max_words=200).generate_from_frequencies(data)
Plot
import matplotlib.pyplot as plt plt.figure(figsize=(10, 10)) plt.imshow(wc, interpolation='bilinear') plt.axis('off') plt.show()
Using an image mask:
twitter_mask = np.array(Image.open('twitter.png')) wc = WordCloud(background_color='white', width=800, height=400, max_words=200, mask=twitter_mask).generate_from_frequencies(data_nyt) plt.figure(figsize=(10, 10)) plt.imshow(wc, interpolation='bilinear') plt.axis("off") plt.figure() plt.imshow(twitter_mask, cmap=plt.cm.gray, interpolation='bilinear') plt.axis("off") plt.show()
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