kopia lustrzana https://github.com/anitagraser/ogd-at-lab
297 wiersze
6.8 KiB
Plaintext
297 wiersze
6.8 KiB
Plaintext
{
|
||
"cells": [
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"# Welcome to the Mobile & Web Mapping Lab - Session 2!"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"## Recap of session 1\n",
|
||
"\n",
|
||
"### Data collection & presentation as essential parts of geographic data science\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: Data science workflow (Graser & Dragaschnig 2020).*\n",
|
||
"\n",
|
||
"### Intro to webmapping \n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: Typical web mapping architecture (Brovelli et al. 2013).*\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"<hr>"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"## Session 2: Webmapping services - more than just maps in a browser\n",
|
||
"\n",
|
||
"**Today's goals**\n",
|
||
"\n",
|
||
"* Understanding different types of web map service standards\n",
|
||
"* Exploring other useful non-standard service examples\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
" \n",
|
||
"### 1. Tiles / basemaps\n",
|
||
"\n",
|
||
"**Use case:** Map background / geographic context\n",
|
||
"\n",
|
||
"**Standard:** Web Map Tile Services (WMTS) / XYZ Tiles\n",
|
||
"\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"Basemap tiles are everywhere ...\n",
|
||
"\n",
|
||
"#### In desktop GIS, e.g. QGIS\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: OSM Tiles in QGIS*\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In web maps, e.g. Leaflet\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: OSM Tiles in Leaflet*\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In notebooks, e.g. Geoviews & Bokeh"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "code",
|
||
"execution_count": null,
|
||
"metadata": {},
|
||
"outputs": [],
|
||
"source": [
|
||
"import holoviews as hv\n",
|
||
"import geoviews as gv\n",
|
||
"gv.extension('bokeh')\n",
|
||
"\n",
|
||
"basemap = hv.element.tiles.OSM().opts(width=450, height=450)\n",
|
||
"basemap"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"Documentation: http://geoviews.org/user_guide/Working_with_Bokeh.html\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"### 2. Raster maps\n",
|
||
"\n",
|
||
"**Use case:** Cartographic products (e.g. hillshades, topographic maps), map overlays ...\n",
|
||
"\n",
|
||
"**Standard:** Web Map Services (WMS) \n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In desktop GIS, e.g. QGIS\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: WMS layers in QGIS*\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In notebooks, e.g. Geoviews & Bokeh"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "code",
|
||
"execution_count": null,
|
||
"metadata": {},
|
||
"outputs": [],
|
||
"source": [
|
||
"url = \"\"\"\n",
|
||
"http://data.wien.gv.at/daten/geo?\n",
|
||
"&service=WMS\n",
|
||
"&request=GetMap\n",
|
||
"&layers=ogdwien:DONAUINSPKTOGD\n",
|
||
"&styles=\n",
|
||
"&format=image/png\n",
|
||
"&transparent=true\n",
|
||
"&version=1.3.0\n",
|
||
"&width=256\n",
|
||
"&height=256\n",
|
||
"&crs=EPSG:3857\n",
|
||
"&bbox={XMIN},{YMIN},{XMAX},{YMAX}\n",
|
||
"\"\"\"\n",
|
||
"\n",
|
||
"basemap = hv.element.tiles.OSM().opts(width=450, height=450)\n",
|
||
"map_with_overlay = basemap * hv.Tiles(url, extents=(1825290,6144246,1827693,6146435))\n",
|
||
"map_with_overlay"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "code",
|
||
"execution_count": null,
|
||
"metadata": {},
|
||
"outputs": [],
|
||
"source": [
|
||
"url2 = \"\"\"\n",
|
||
"http://data.wien.gv.at/daten/geo?\n",
|
||
"&service=WMS\n",
|
||
"&request=GetMap\n",
|
||
"&layers=ogdwien:DONAUKILOMETEROGD\n",
|
||
"&styles=\n",
|
||
"&format=image/png\n",
|
||
"&transparent=true\n",
|
||
"&version=1.3.0\n",
|
||
"&width=256\n",
|
||
"&height=256\n",
|
||
"&crs=EPSG:3857\n",
|
||
"&bbox={XMIN},{YMIN},{XMAX},{YMAX}\n",
|
||
"\"\"\"\n",
|
||
"\n",
|
||
"map_with_overlay * hv.Tiles(url2, extents=(1825290,6144246,1827693,6146435))"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"Source: https://github.com/holoviz/geoviews/issues/481\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"### 3. Vector data\n",
|
||
"\n",
|
||
"**Use case:** Access to geometry and attribute data\n",
|
||
"\n",
|
||
"**Standard:** Web Feature Services (WFS) \n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In desktop GIS, e.g. QGIS\n",
|
||
"\n",
|
||
"\n",
|
||
"\n",
|
||
"*Figure: WFS layer in QGIS*\n",
|
||
"\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"<br/>\n",
|
||
"\n",
|
||
"#### In notebooks, e.g. Geoviews & Bokeh"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "code",
|
||
"execution_count": null,
|
||
"metadata": {},
|
||
"outputs": [],
|
||
"source": [
|
||
"import geopandas as gpd\n",
|
||
"from urllib.request import urlretrieve\n",
|
||
"import hvplot.pandas\n",
|
||
"\n",
|
||
"layer = 'CITYBIKEOGD'\n",
|
||
"file = f'data/{layer}.json'\n",
|
||
"url = f\"https://data.wien.gv.at/daten/geo?service=WFS&request=GetFeature&version=1.1.0&typeName=ogdwien:{layer}&srsName=EPSG:4326&outputFormat=json\"\n",
|
||
"urlretrieve(url, file)\n",
|
||
"gdf = gpd.read_file(file)\n",
|
||
"gdf"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "code",
|
||
"execution_count": null,
|
||
"metadata": {},
|
||
"outputs": [],
|
||
"source": [
|
||
"gdf.hvplot(geo=True, tiles='OSM', hover_cols=['STATION']).opts(active_tools=['wheel_zoom'])"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"### 4. Other non-standard service examples\n",
|
||
"\n",
|
||
"1. [Geocoding addresses with Nominatim](geocoding.ipynb)\n",
|
||
"1. [Getting elevation information](elevation.ipynb)"
|
||
]
|
||
},
|
||
{
|
||
"cell_type": "markdown",
|
||
"metadata": {},
|
||
"source": [
|
||
"## References\n",
|
||
"\n",
|
||
"* Brovelli, M., Minghini, M., & Zamboni, G. (2013). Web–based Participatory GIS with data collection on the field–A prototype architecture. In Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings (Vol. 13, No. 1, p. 5).\n",
|
||
"* Graser, A. & Dragaschnig, M. (2020). Open Geospatial Tools for Movement Data Exploration. KN ‒ Journal of Cartography and Geographic Information, 70(1), 3-10. doi:10.1007/s42489-020-00039-y."
|
||
]
|
||
}
|
||
],
|
||
"metadata": {
|
||
"kernelspec": {
|
||
"display_name": "Python 3",
|
||
"language": "python",
|
||
"name": "python3"
|
||
},
|
||
"language_info": {
|
||
"codemirror_mode": {
|
||
"name": "ipython",
|
||
"version": 3
|
||
},
|
||
"file_extension": ".py",
|
||
"mimetype": "text/x-python",
|
||
"name": "python",
|
||
"nbconvert_exporter": "python",
|
||
"pygments_lexer": "ipython3",
|
||
"version": "3.7.10"
|
||
}
|
||
},
|
||
"nbformat": 4,
|
||
"nbformat_minor": 4
|
||
}
|