chart.py

import dash_html_components as html
import pandas as pd
import dash_core_components as dcc
import plotly.graph_objs as go
from scipy.optimize import curve_fit
from sigfig import round
import dash
import dash_table
import scipy.integrate as integrate
import os
import fnmatch


def func(x, a, b):
    return a * x ** b


layout = None
port = 8050
df = pd.read_csv('data.csv', dtype=float, usecols=['supply', 'price'])
xdata = df.supply.values
ydata = df.price.values
popt, pcov = curve_fit(func, xdata, ydata)

l = []
for i in range(10000, 101000, 1000):
    l.append(
        {'supply': i, 'price': int(func(i, *popt)),
         'total': int(integrate.quad(func, 0, i, args=(popt[0], popt[1]))[0])})

df2 = pd.DataFrame(l)

a = float(df2.price[df2.supply == 20000])
b = float(df2.price[df2.supply == 40000])

result = integrate.quad(func, 10000, 100000, args=(popt[0], popt[1]))[0]

external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']

app = dash.Dash(__name__, external_stylesheets=external_stylesheets)

fig_one = go.Figure(
    data=(go.Scatter(x=df.supply, y=df.price, name='Data points', mode='markers'),
          go.Scatter(x=df2.supply, y=df2.price, mode='lines', name
          ='Fitted curve')), layout={
        'title': 'price (DAI) vs supply (ARRAY)'
    })

fig_two = go.Figure()

app.layout = html.Div(children=[

    html.H6(children=f'adjusted formula: y = {round(float(popt[0]), 4)} * x ** {round(float(popt[1]), 4)}'),
    # html.H6(children=f'price increases  by {b / a:.3f} for every doubling of supply'),
    html.H6(children=f'max. market cap (100k supply) = ${result:,.0f} DAI'),

    dcc.Graph(
        id='price',

        figure=fig_one,
        style={'title': 'price vs supply'}

    ),

    dash_table.DataTable(
        id='table',
        columns=[{"name": i, "id": i} for i in df2.columns],
        data=df2.to_dict('records'), style_cell_conditional=[
            {'if': {'column_id': 'supply'},
             'width': '100'},
            {'if': {'column_id': 'price'},
             'width': '100'}
        ], style_table={'width': '50%'})
],
)
port = port + 1
app.run_server(debug=True, port=port)