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# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import time
import numpy as np
import streamlit as st
from streamlit.hello.utils import show_code
def plotting_demo():
progress_bar = st.sidebar.progress(0)
status_text = st.sidebar.empty()
last_rows = np.random.randn(1, 1)
chart = st.line_chart(last_rows)
for i in range(1, 101):
new_rows = last_rows[-1, :] + np.random.randn(5, 1).cumsum(axis=0)
status_text.text("%i%% Complete" % i)
chart.add_rows(new_rows)
progress_bar.progress(i)
last_rows = new_rows
time.sleep(0.05)
progress_bar.empty()
# Streamlit widgets automatically run the script from top to bottom. Since
# this button is not connected to any other logic, it just causes a plain
# rerun.
st.button("Re-run")
st.set_page_config(page_title="Plotting Demo", page_icon="📈")
st.markdown("# Plotting Demo")
st.sidebar.header("Plotting Demo")
st.write(
"""This demo illustrates a combination of plotting and animation with
Streamlit. We're generating a bunch of random numbers in a loop for around
5 seconds. Enjoy!"""
)
plotting_demo()
show_code(plotting_demo)
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