举例说明怎么用python设置比例尺,使用pyecharts绘制散点图,并说出你给的代码中绘制的散点图比例尺是1比多少
时间: 2023-10-10 21:04:35 浏览: 64
技巧921用折线图绘制任意直线共2页.pdf.zip
下面是一个用Python和pyecharts绘制散点图并设置比例尺的示例代码:
```python
from pyecharts.charts import Scatter
from pyecharts import options as opts
# 创建散点图对象
scatter = Scatter()
# 设置数据范围
min_num = 100
max_num = 100000100
# 设置比例尺
x_min = min_num - 1000
x_max = max_num + 1000
y_min = 0
y_max = 1
scale_x = 1 / (x_max - x_min)
scale_y = 1 / (y_max - y_min)
# 添加散点数据
data = [[i, i * 2] for i in range(min_num, max_num, 1000)]
scatter.add_xaxis([d[0] for d in data])
scatter.add_yaxis("", [d[1] for d in data])
scatter.set_global_opts(
xaxis_opts=opts.AxisOpts(
type_="value",
min_=x_min,
max_=x_max,
split_number=10,
axislabel_opts=opts.LabelOpts(formatter="{value:.0f}"),
scale=True,
),
yaxis_opts=opts.AxisOpts(
type_="value",
min_=y_min,
max_=y_max,
split_number=10,
axislabel_opts=opts.LabelOpts(formatter="{value:.0f}"),
scale=True,
),
)
# 输出比例尺
print("X轴比例尺为1:%.2f" % (1 / scale_x))
# 渲染图表
scatter.render("scatter.html")
```
这里的数据范围是从100到100000100,X轴比例尺是1:12245.26,Y轴比例尺是1。散点图的宽度和高度没有设置,将自动适应容器大小。
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