我有一个包含国家/地区的元组列表及其出现的次数。我有175个国家都有很长的名字。
当我绘制图表时,我得到:
正如你所看到的,一切都很紧凑,没有空间,你几乎看不到任何东西。
我使用的代码(原始数据文件很大,但这包含我的matplotlib特定代码):
def tupleCounts2Percents(inputList):
total = sum(x[1] for x in inputList)*1.0
return [(x[0], 1.*x[1]/total) for x in inputList]
def autolabel(rects,labels):
# attach some text labels
for i,(rect,label) in enumerate(zip(rects,labels)):
height = rect.get_height()
plt.text(rect.get_x() + rect.get_width()/2., 1.05*height,
label,
ha='center', va='bottom',fontsize=6,style='italic')
def countryChartList(inputlist,path):
seen_countries = Counter()
for dict in inputlist:
seen_countries += Counter(dict['location-value-pair'].keys())
seen_countries = seen_countries.most_common()
seen_countries_percentage = map(itemgetter(1), tupleCounts2Percents(seen_countries))
seen_countries_percentage = ['{:.2%}'.format(item)for item in seen_countries_percentage]
yvals = map(itemgetter(1), seen_countries)
xvals = map(itemgetter(0), seen_countries)
plt.figure()
countrychart = plt.bar(range(len(seen_countries)), yvals, width=0.9)
plt.xticks(range(len(seen_countries)), xvals,rotation=90)
plot_margin = 0.25
x0, x1, y0, y1 = plt.axis()
plt.axis((x0,
x1,
y0,
y1+plot_margin))
plt.title('Countries in Dataset')
plt.xlabel('Countries in Data')
plt.ylabel('Occurrences')
plt.tick_params(axis='both', which='major', labelsize=6)
plt.tick_params(axis='both', which='minor', labelsize=6)
plt.tight_layout()
autolabel(countrychart,seen_countries_percentage)
plt.savefig(path)
plt.clf()
关于我提供的词典的概念是:
list = [
{
"location-value-pair": {
"Austria": 234
}
},
{
"location-value-pair": {
"Azerbaijan": 20006.0
}
},
{
"location-value-pair": {
"Germany": 4231
}
},
{
"location-value-pair": {
"United States": 12121
}
},
{
"location-value-pair": {
"Germany": 65445
}
},
{
"location-value-pair": {
"UK": 846744
}
}
}
]
我如何:
修改
我将国家/地区的数量减少到前50名,使条形图更加透明,并将标记更改为旋转45度。我仍然发现第一个条形有一个穿过y轴的刻度线,它是不可读的。我怎么能改变这个?
更改为countrychart = plt.bar(range(len(seen_countries)), yvals, width=0.9,alpha=0.6)
以及rotation=45
更改为.text()
函数中的autolabel
参数。
答案 0 :(得分:1)
问题在于自动标签的对齐:
def autolabel(rects,labels):
# attach some text labels
for i,(rect,label) in enumerate(zip(rects,labels)):
height = rect.get_height()
plt.text(rect.get_x() + rect.get_width()/2., 1.05*height,
label,
ha='center', va='bottom',fontsize=6,style='italic')
更改为:
def autolabel(rects,labels):
# attach some text labels
for i,(rect,label) in enumerate(zip(rects,labels)):
height = rect.get_height()
plt.text(rect.get_x() + rect.get_width()/2., 1.05*height,
label,
ha='left', va='bottom',fontsize=6,style='italic', rotation=45)
获得: