Package Exports
- wms-save-image
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Readme
Features
Download a single image from a WMS map server.
Companion to map-image-preview. Based on a sample WMS url, will fill in bounds and image dimensions from a JSON file and download the image.
Usage
WMS image downloader v1.0.4
Usage: node wms-save-image <options> [jsonfile]
Options:
-M --meta bounds and image dimensions JSON
-U --url WMS URL template
-O --out Target image fileExample
node wms-save-image.js \
-U "https://openwms.statkart.no/skwms1/wms.topo4.graatone?request=GetMap&SERVICE=WMS&VERSION=1.1.1&BBOX=0,0,1,1&SRS=EPSG:32633&WIDTH=400&HEIGHT=300&LAYERS=topo4graatone_WMS&STYLES=&FORMAT=image/png" \
-M example/thumbnail.json \
-O output.png
Meta
JSON file format
{
"bbox": {
"left": 524161.0500020641,
"bottom": 7590643.169290178,
"right": 805691.242609148,
"top": 7853460.758413694
},
"image": { "width": 408, "height": 380 }
}Batch mode operation
Recursive download
find . -type d -exec sh -c "cd \"{}\" && pwd && [ -f thumbnail.json ] && wms-save-image" -U "https://openwms.statkart.no/skwms1/wms.topo4.graatone?request=GetMap&SERVICE=WMS&VERSION=1.1.1&BBOX=0,0,1,1&SRS=EPSG:32633&WIDTH=400&HEIGHT=300&LAYERS=topo4graatone_WMS&STYLES=&FORMAT=image/png" \
-M thumbnail.json \;Composite with other image
find . -type d -exec sh -c "cd \"{}\" && pwd && [ -f polygon.32633.geojson ] && convert thumbnail_back.png polygon.32633.png -compose Multiply -composite thumbnail.png" \;