quantum gis cartography - welcome to vcgi's web...
TRANSCRIPT
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Wind data from NOAA’s Aviation Weather Center
Icon design in Inkscape
Map design in Quantum GIS
Refine with GIMP
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METARs aviation routine weather report (in CSV)
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Aviation Weather Center REST Web Service http://www.aviationweather.gov/adds/dataserver_current/httpparam?
dataSource=metars &requestType=retrieve &format=csv &hoursBeforeNow=2 http://www.aviationweather.gov/adds/dataserver_current/httpparam?dataSource=metars&requestType=retrieve&format=csv&hoursBeforeNow=2
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Start a new Inkscape session
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Draw freehand lines
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Add a rounded top to the first line
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Fill in the empty space, save out as SVG
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Add CSV weather data to QGIS
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Add CSV weather data to QGIS
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Set Coordinate Reference System (WGS84)
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CSV geocoded and added to map
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CSV geocoded and added to map
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Add US layer for context
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Change CRS to US National Atlas Equal Area
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Change CRS to US National Atlas Equal Area
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While we’re here, let’s export our geocoded CSV to SHP
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While we’re here, let’s export our geocoded CSV to SHP
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And add it to our map
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Double-click wind in the TOC, Layer Properties
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Style tab, graduated symbols, by wind speed
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Style tab, graduated symbols, by wind speed
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Change from 5 to 10 classes
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Change symbol from simple marker to SVG
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Copy path of Wind.SVG to SVG Image box
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For each class, change symbol size (2, 4, 6, etc.)
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Custom SVG symbols, sized by wind speed
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Layer properties, Advanced, Rotation field, wind_dir_d
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Wind symbols now rotated by wind direction
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Add a new weather station point file beneath wind
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Right click, Query for precipitation
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Change marker to green, size 10, 90% transparent
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Change marker to green, size 10, 90% transparent
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Add 3 more layers, query for lightning, sun, clouds
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File, New Print Composer
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Paper and quality, Size, ANSI A (Letter)
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Fit page to view
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Add new map to the page
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Add new legend to the page
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Edit legend text
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Remove Legend text, rename legend items
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Remove legend border, will refine using GIMP
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Export as PDF, one with legend, one without
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Use GIMP to rearrange legend, add text
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Further reading…
Quantum GIS Planet | Cartography http://planet.qgis.org/planet/tag/cartography/ Anita Graser http://anitagraser.com/ Print Composer 2.0 posts http://anitagraser.com/?s=print+composer InfoGeoBlog http://infogeoblog.wordpress.com/?s=qgis+cartography