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

Sideinnholdet støttes ikke på andre språk.
Fra Wikipedia, den frie encyklopedi

Opprinnelig fil(SVG-fil, standardstørrelse 691 × 633 piksler, filstørrelse: 4,65 MB)


Wikimedia Commons' logo

Beskrivelse

Beskrivelse
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.
Dato
Kilde

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
Opphavsperson Soil Science and Resource Assessment, Resource Assessment Division (NRCS SSRA-RAD) (Division of the U.S. Dept. Of Agriculture)
SVG utvikling
InfoField
 
The source code of this large SVG is invalid due to an error.
 
Denne store vektorgrafikken ble laget med Inkscape.
 
og med QGIS.

Lisensiering

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.

English  español  日本語  македонски  മലയാളം  português do Brasil  русский  українська  +/−

Bildetekster

Legg til en kort forklaring på hva filen representerer

Elementer som er med i denne fila

motiv

image/svg+xml

Filhistorikk

Klikk på et tidspunkt for å vise filen slik den var på det tidspunktet.

Dato/klokkeslettMiniatyrbildeDimensjonerBrukerKommentar
nåværende26. jan. 2017 kl. 13:47Miniatyrbilde av versjonen fra 26. jan. 2017 kl. 13:47691 × 633 (4,65 MB)PsiĥedelistoAttempt to fix the font by using the recommended font definition on Help:SVG
22. jan. 2017 kl. 05:49Miniatyrbilde av versjonen fra 22. jan. 2017 kl. 05:49691 × 633 (4,65 MB)Psiĥedelistorecolor miscolored county
15. jan. 2017 kl. 14:41Miniatyrbilde av versjonen fra 15. jan. 2017 kl. 14:41691 × 633 (4,65 MB)PsiĥedelistoUser created page with UploadWizard

Den følgende siden bruker denne filen:

Global filbruk

Metadata