我想打印我使用动画和框架使用绘图和破折号创建的日期滑块中的更改

Question

我想捕获滑块所在的日期。换句话说，日期滑块的任何更改都应该打印在我的编译器中。看这段代码： 这是有点冗长但简单且“可运行”的代码。数据就在里面

import plotly.graph_objects as go

import pandas as pd

url = "https://raw.githubusercontent.com/plotly/datasets/master/gapminderDataFiveYear.csv"
dataset = pd.read_csv(url)

years = ["1952", "1962", "1967", "1972", "1977", "1982", "1987", "1992", "1997", "2002",
         "2007"]

# make list of continents
continents = []
for continent in dataset["continent"]:
    if continent not in continents:
        continents.append(continent)
# make figure
fig_dict = {
    "data": [],
    "layout": {},
    "frames": []
}

# fill in most of layout
fig_dict["layout"]["xaxis"] = {"range": [30, 85], "title": "Life Expectancy"}
fig_dict["layout"]["yaxis"] = {"title": "GDP per Capita", "type": "log"}
fig_dict["layout"]["hovermode"] = "closest"
fig_dict["layout"]["updatemenus"] = [
    {
        "buttons": [
            {
                "args": [None, {"frame": {"duration": 500, "redraw": False},
                                "fromcurrent": True, "transition": {"duration": 300,
                                                                    "easing": "quadratic-in-out"}}],
                "label": "Play",
                "method": "animate"
            },
            {
                "args": [[None], {"frame": {"duration": 0, "redraw": False},
                                  "mode": "immediate",
                                  "transition": {"duration": 0}}],
                "label": "Pause",
                "method": "animate"
            }
        ],
        "direction": "left",
        "pad": {"r": 10, "t": 87},
        "showactive": False,
        "type": "buttons",
        "x": 0.1,
        "xanchor": "right",
        "y": 0,
        "yanchor": "top"
    }
]

sliders_dict = {
    "active": 0,
    "yanchor": "top",
    "xanchor": "left",
    "currentvalue": {
        "font": {"size": 20},
        "prefix": "Year:",
        "visible": True,
        "xanchor": "right"
    },
    "transition": {"duration": 300, "easing": "cubic-in-out"},
    "pad": {"b": 10, "t": 50},
    "len": 0.9,
    "x": 0.1,
    "y": 0,
    "steps": []
}

# make data
year = 1952
for continent in continents:
    dataset_by_year = dataset[dataset["year"] == year]
    dataset_by_year_and_cont = dataset_by_year[
        dataset_by_year["continent"] == continent]

    data_dict = {
        "x": list(dataset_by_year_and_cont["lifeExp"]),
        "y": list(dataset_by_year_and_cont["gdpPercap"]),
        "mode": "markers",
        "text": list(dataset_by_year_and_cont["country"]),
        "marker": {
            "sizemode": "area",
            "sizeref": 200000,
            "size": list(dataset_by_year_and_cont["pop"])
        },
        "name": continent
    }
    fig_dict["data"].append(data_dict)

# make frames
for year in years:
    frame = {"data": [], "name": str(year)}
    for continent in continents:
        dataset_by_year = dataset[dataset["year"] == int(year)]
        dataset_by_year_and_cont = dataset_by_year[
            dataset_by_year["continent"] == continent]

        data_dict = {
            "x": list(dataset_by_year_and_cont["lifeExp"]),
            "y": list(dataset_by_year_and_cont["gdpPercap"]),
            "mode": "markers",
            "text": list(dataset_by_year_and_cont["country"]),
            "marker": {
                "sizemode": "area",
                "sizeref": 200000,
                "size": list(dataset_by_year_and_cont["pop"])
            },
            "name": continent
        }
        frame["data"].append(data_dict)

    fig_dict["frames"].append(frame)
    slider_step = {"args": [
        [year],
        {"frame": {"duration": 300, "redraw": False},
         "mode": "immediate",
         "transition": {"duration": 300}}
    ],
        "label": year,
        "method": "animate"}
    sliders_dict["steps"].append(slider_step)


fig_dict["layout"]["sliders"] = [sliders_dict]

fig = go.Figure(fig_dict)

fig.show()

您将在滑块上看到年份。无论是动画还是用鼠标拖动，我都希望看到我的滑块在编译器中所处的年份，就像打印功能一样。

这个问题的更大范围： 我正在研究与项目相关的类似问题。我打印更新日期的目的是访问当前日期。我还有其他图要创建，它们取决于更新日期。

谢谢

Answer 1

您需要将观察“附加”到滑块。

N_slider = IntSlider(min=0, max=20, step=1, value=3)

def view(change):
    print(change.new)

N_slider.observe(view, names='value')

N_slider