56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
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# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2025)
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import time
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import numpy as np
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import streamlit as st
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from streamlit.hello.utils import show_code
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def plotting_demo() -> None:
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progress_bar = st.sidebar.progress(0)
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status_text = st.sidebar.empty()
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last_rows = np.random.randn(1, 1) # noqa: NPY002
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chart = st.line_chart(last_rows)
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for i in range(1, 101):
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new_rows = last_rows[-1, :] + np.random.randn(5, 1).cumsum(axis=0) # noqa: NPY002
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status_text.text(f"{i}% complete")
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chart.add_rows(new_rows)
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progress_bar.progress(i)
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last_rows = new_rows
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time.sleep(0.05)
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progress_bar.empty()
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# Streamlit widgets automatically run the script from top to bottom. Since
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# this button is not connected to any other logic, it just causes a plain
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# rerun.
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st.button("Rerun")
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st.set_page_config(page_title="Plotting demo", page_icon=":material/show_chart:")
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st.title("Plotting demo")
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st.write(
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"""
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This demo illustrates a combination of plotting and animation with
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Streamlit. We're generating a bunch of random numbers in a loop for around
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5 seconds. Enjoy!
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"""
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)
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plotting_demo()
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show_code(plotting_demo)
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