|
import folium |
|
import pandas as pd |
|
import streamlit as st |
|
import leafmap.foliumap as leafmap |
|
import folium.plugins as plugins |
|
|
|
st.set_page_config(layout="wide") |
|
|
|
st.sidebar.info( |
|
""" |
|
- Web App URL: <https://streamlit.gishub.org> |
|
- GitHub repository: <https://github.com/giswqs/streamlit-geospatial> |
|
""" |
|
) |
|
|
|
st.sidebar.title("Contact") |
|
st.sidebar.info( |
|
""" |
|
Qiusheng Wu at [wetlands.io](https://wetlands.io) | [GitHub](https://github.com/giswqs) | [Twitter](https://twitter.com/giswqs) | [YouTube](https://www.youtube.com/c/QiushengWu) | [LinkedIn](https://www.linkedin.com/in/qiushengwu) |
|
""" |
|
) |
|
|
|
st.title("National Library of Scotland XYZ Layers") |
|
df = pd.read_csv("data/scotland_xyz.tsv", sep="\t") |
|
basemaps = leafmap.basemaps |
|
names = df["Name"].values.tolist() + list(basemaps.keys()) |
|
links = df["URL"].values.tolist() + list(basemaps.values()) |
|
|
|
col1, col2, col3, col4, col5, col6, col7 = st.columns([3, 3, 1, 1, 1, 1.5, 1.5]) |
|
with col1: |
|
left_name = st.selectbox( |
|
"Select the left layer", |
|
names, |
|
index=names.index("Great Britain - Bartholomew Half Inch, 1897-1907"), |
|
) |
|
|
|
with col2: |
|
right_name = st.selectbox( |
|
"Select the right layer", |
|
names, |
|
index=names.index("HYBRID"), |
|
) |
|
|
|
with col3: |
|
|
|
lat = st.text_input("Latitude", " 55.68") |
|
|
|
with col4: |
|
|
|
lon = st.text_input("Longitude", "-2.98") |
|
|
|
with col5: |
|
|
|
zoom = st.text_input("Zoom", "6") |
|
|
|
with col6: |
|
checkbox = st.checkbox("Add OS 25 inch") |
|
|
|
|
|
with st.expander("Acknowledgements"): |
|
markdown = """ |
|
The map tile access is by kind arrangement of the National Library of Scotland on the understanding that re-use is for personal purposes. They host most of the map layers except these: |
|
- The Roy Maps are owned by the British Library. |
|
- The Great Britain – OS maps 1:25,000, 1937-61 and One Inch 7th series, 1955-61 are hosted by MapTiler. |
|
|
|
If you wish you use these layers within a website, or for a commercial or public purpose, please view the [National Library of Scotland Historic Maps Subscription API](https://maps.nls.uk/projects/subscription-api/) or contact them at maps@nls.uk. |
|
""" |
|
st.markdown(markdown, unsafe_allow_html=True) |
|
|
|
m = leafmap.Map( |
|
center=[float(lat), float(lon)], |
|
zoom=int(zoom), |
|
locate_control=True, |
|
draw_control=False, |
|
measure_control=False, |
|
) |
|
measure = plugins.MeasureControl(position="bottomleft", active_color="orange") |
|
measure.add_to(m) |
|
|
|
if left_name in basemaps: |
|
left_layer = basemaps[left_name] |
|
else: |
|
left_layer = folium.TileLayer( |
|
tiles=links[names.index(left_name)], |
|
name=left_name, |
|
attr="National Library of Scotland", |
|
overlay=True, |
|
) |
|
|
|
if right_name in basemaps: |
|
right_layer = basemaps[right_name] |
|
else: |
|
right_layer = folium.TileLayer( |
|
tiles=links[names.index(right_name)], |
|
name=right_name, |
|
attr="National Library of Scotland", |
|
overlay=True, |
|
) |
|
|
|
if checkbox: |
|
for index, name in enumerate(names): |
|
if "OS 25 inch" in name: |
|
m.add_tile_layer( |
|
links[index], name, attribution="National Library of Scotland" |
|
) |
|
|
|
m.split_map(left_layer, right_layer) |
|
m.to_streamlit(height=600) |
|
|
