313 lines
13 KiB
Python
313 lines
13 KiB
Python
import math
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from dash import Dash, dcc, html, Input, Output
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import plotly.express as px
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import plotly.graph_objects as go
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import numpy as np
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import pandas as pd
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import dash_bootstrap_components as dbc
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from sklearn.datasets import make_blobs
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# New: Density heatmap (2 columns) as third plot on tab 2
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# with color and resolution options
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# New: Everything with inline style and bootstrap (no CSS)
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app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP])
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# generate random normal distributed data for x and y
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# and store it in a Pandas DataFrame (for plot 1,2, and 5)
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np.random.seed(seed=8)
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df = pd.DataFrame(
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{
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"y": np.random.normal(loc=0, scale=10, size=1000),
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"x": np.random.normal(loc=10, scale=2, size=1000),
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}
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)
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# define cluster colors
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COLORS = {"0": "red", "1": "blue", "2": "grey"}
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# generic cluster data (for plot 3 and 4)
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X, y = make_blobs(
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n_samples=7500, centers=3, n_features=2, random_state=0, cluster_std=0.75
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)
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cluster_df = pd.DataFrame(data=X, columns=["X", "Y"])
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cluster_df["cluster"] = [str(i) for i in y]
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app.layout = html.Div(
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[
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html.Div([html.H1("Dashboard 6")], style={"margin": "10px 25px 25px 25px"}),
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html.Div(
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[
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dcc.Tabs(
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id="tabs",
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children=[
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dcc.Tab(
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label="Tab One",
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children=[
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html.Div(
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[
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dbc.Row(
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[
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dbc.Col(
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[
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dcc.Dropdown(
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options=[
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"red",
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"green",
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"blue",
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],
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value="red",
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id="color",
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multi=False,
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)
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],
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width=6,
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),
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dbc.Col(
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[
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dcc.Slider(
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min=math.floor(
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df["y"].min()
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),
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max=math.ceil(
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df["y"].max()
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),
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id="min_value",
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)
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],
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width=6,
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),
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]
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),
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dbc.Row(
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[
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dbc.Col(
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[dcc.Graph(id="graph_1")], width=6
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),
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dbc.Col(
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[dcc.Graph(id="graph_2")], width=6
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),
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]
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),
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],
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style={"margin": "100px 25px 25px 25px"},
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),
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],
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),
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dcc.Tab(
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label="Tab Two",
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id="tab_2_graphs",
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children=[
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html.Div(
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[
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dbc.Row(
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[
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dbc.Col(
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[dcc.Graph(id="graph_3")], width=8
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),
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dbc.Col(
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[dcc.Graph(id="graph_4")], width=4
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),
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]
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),
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dbc.Row(
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[
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dbc.Col(
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html.Div(
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[
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dbc.Label(
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"Number of bins:",
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html_for="graph_5_nbins",
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),
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dcc.Dropdown(
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options=[
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str(i)
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for i in range(
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5, 100, 5
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)
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],
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value="40",
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id="graph_5_nbins",
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multi=False,
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),
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]
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),
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width={"size": 3},
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),
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dbc.Col(
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html.Div(
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[
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dbc.Label(
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"Color:",
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html_for="graph_5_color",
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),
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dcc.Dropdown(
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options=[
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"Viridis",
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"Magma",
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"Hot",
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"GnBu",
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"Greys",
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],
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value="Viridis",
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id="graph_5_color",
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multi=False,
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),
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]
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),
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width={"size": 3, "offset": 1},
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),
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dbc.Col(
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html.Div(
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[
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dbc.Label(
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"Separated for Cluster:",
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html_for="graph_5_separated",
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),
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dcc.RadioItems(
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options=["Yes", "No"],
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value="No",
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id="graph_5_separated",
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),
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]
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),
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width={"size": 3, "offset": 1},
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),
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]
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),
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dbc.Row(
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[
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dbc.Col(
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[dcc.Graph(id="graph_5")], width=12
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)
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]
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),
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],
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style={"margin": "10px 25px 25px 25px"},
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)
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],
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),
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],
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)
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],
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style={"margin": "10px 25px 25px 25px"},
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),
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]
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)
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def update_selected_data(selected_data):
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if selected_data is None or (
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isinstance(selected_data, dict) and "xaxis.range[0]" not in selected_data
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):
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cluster_dff = cluster_df
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else:
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cluster_dff = cluster_df[
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(cluster_df["X"] >= selected_data.get("xaxis.range[0]"))
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& (cluster_df["X"] <= selected_data.get("xaxis.range[1]"))
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& (cluster_df["Y"] >= selected_data.get("yaxis.range[0]"))
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& (cluster_df["Y"] <= selected_data.get("yaxis.range[1]"))
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]
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return cluster_dff
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@app.callback(Output("graph_1", "figure"), Input("color", "value"))
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def update_graph_1(dropdown_value_color):
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fig = px.histogram(df, x="y", color_discrete_sequence=[dropdown_value_color])
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fig.update_layout(template="plotly_white")
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return fig
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@app.callback(Output("graph_2", "figure"), Input("min_value", "value"))
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def update_graph_2(min_value):
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if min_value:
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dff = df[df["y"] > min_value]
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else:
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dff = df
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fig = px.scatter(dff, x="x", y="y")
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fig.update_layout(template="plotly_white")
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return fig
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# Hier passt nun graph_5 als input.
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@app.callback(
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Output("graph_3", "figure"),
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Output("graph_4", "figure"),
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Input("graph_5", "relayoutData"),
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)
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def update_graph_3_and_4(selected_data):
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PLOT_HEIGHT = 400
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cluster_dff = update_selected_data(selected_data=selected_data)
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fig3 = px.scatter(
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cluster_dff,
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x="X",
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y="Y",
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color="cluster",
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color_discrete_map=COLORS,
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category_orders={"cluster": ["0", "1", "2"]},
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)
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fig3.update_layout(
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height=PLOT_HEIGHT, template="plotly_white", coloraxis_showscale=False
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)
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fig3.update_traces(marker=dict(size=8))
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group_counts = cluster_dff[["cluster", "X"]].groupby("cluster").count()
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fig4 = go.Figure(
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data=[
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go.Bar(
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x=group_counts.index,
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y=group_counts["X"],
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marker_color=[COLORS.get(i) for i in group_counts.index],
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)
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]
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)
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fig4.update_layout(
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height=PLOT_HEIGHT,
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template="plotly_white",
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title="<b>Counts per cluster</b>",
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xaxis_title="cluster",
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title_font_size=25,
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)
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return fig3, fig4
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@app.callback(
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Output("graph_5", "figure"),
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Input("graph_5_nbins", "value"),
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Input("graph_5_color", "value"),
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Input("graph_5_separated", "value"),
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Input("graph_3", "relayoutData"),
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)
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def update_graph_5(nbins, color, separated, selected_data):
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cluster_dff = update_selected_data(selected_data=selected_data)
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fig = px.density_heatmap(
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cluster_dff,
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x="X",
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y="Y",
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nbinsx=int(nbins),
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nbinsy=int(nbins),
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color_continuous_scale=color,
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facet_col=None if separated == "No" else "cluster",
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category_orders={"cluster": ["0", "1", "2"]},
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)
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fig.update_layout(template="plotly_white")
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return fig
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if __name__ == "__main__":
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app.run_server(debug=True, port=8014)
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