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File:Map of states and counties affected by the Dust Bowl, sourced from US federal government dept. (NRCS SSRA-RAD).svg

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Descrizione
English: Based only on that PNG image. I made this file primarily using QGIS, and the following public domain [

https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html shapefiles from census.gov]:

cb_2015_us_state_20m cb_2015_us_county_5m

The map projection is:

NAD83(2011) / Texas Centric Albers Equal Area

+proj=aea +lat_1=27.5 +lat_2=35 +lat_0=18 +lon_0=-100 +x_0=1500000 +y_0=6000000 +ellps=GRS80 +units=m +no_defs

The original PNG, rotated and scaled slightly to fit this version of the Albers EA projection, is in the image for your comparison.

The approximated areas of the Dust Bowl were traced from the PNG in InkScape, no shapefile was made or used.

This is definitely the current crown jewel of my Wikipedia images. It took the longest to research and make and it took lots of software. But it was definitely worth it - this map has been requested by readers of w:en:Dust Bowl three times. Someone had to deliver eventually.
Data
Fonte

Based on map by ID m12545a/55 by Natural Resources Conservation Service, Soil Science and Resource Assessment, Resource Assessment Division (NRCS SSRA- RAD) Baitsville, MD Jan 2012

The source of that map: Map 2579, March 1954, U.S. Dept. Of Agriculture Soil Conservation Service

https://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/about/history/?cid=stelprdb1049437
Autore Soil Science and Resource Assessment, Resource Assessment Division (NRCS SSRA-RAD) (Division of the U.S. Dept. Of Agriculture)
SVG sviluppo
InfoField
 
Il codice sorgente di questo grosso file SVG non è valido a causa di 1 errore.
 
Questa grossa mappa in grafica vettoriale non valida secondo il W3C è stata creata con Inkscape.
 
e con QGIS.

Licenza

Public domain
This image or file is a work of a United States Census Bureau employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Data/OraMiniaturaDimensioniUtenteCommento
attuale13:47, 26 gen 2017Miniatura della versione delle 13:47, 26 gen 2017691 × 633 (4,65 MB)PsiĥedelistoAttempt to fix the font by using the recommended font definition on Help:SVG
05:49, 22 gen 2017Miniatura della versione delle 05:49, 22 gen 2017691 × 633 (4,65 MB)Psiĥedelistorecolor miscolored county
14:41, 15 gen 2017Miniatura della versione delle 14:41, 15 gen 2017691 × 633 (4,65 MB)PsiĥedelistoUser created page with UploadWizard

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