File:2010 canterbury aftershocks by depth.svg
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Summary
| Description |
English: Plot of 2010 Canterbury earthquake aftershocks by depth and time.
Author: Tayste Data source: GeoNet (NZ) License: GNU public domain, free content Software: R Source code# Plot of 2010 Canterbury earthquake aftershocks by depth and time.
# Author: Tayste
# License: GNU public domain, free content
# Software: R
#
# Data from GeoNet (New Zealand)
# earthquakes.csv is the file returned by a query to:
# http://magma.geonet.org.nz/resources/quakesearch/
# Choose output format: CSV (Time, location, z, mag)
library(RSvgDevice)
quakes = read.csv('earthquakes.csv',row.names=NULL) # R gets confused by extra empty column (?)
names(quakes) = c(names(quakes)[-1],"QuakeTime") # Try to adjust for that.
stopifnot(all(quakes$ORI_YEAR == 2010)) # Check column names aligned with data
quakes$QuakeTime = with(quakes, ISOdatetime(ORI_YEAR, ORI_MONTH, ORI_DAY, ORI_HOUR, ORI_MINUTE, ORI_SECOND, tz="UTC"))
attr(quakes$QuakeTime,"tzone") = "NZ"
`%inrange%` <- function (x, limits) x >= limits[1] & x <= limits[2]
chch = subset(quakes, QuakeTime >= as.POSIXct("2010-09-04") & LONG %inrange% c(172,174) & LAT %inrange% c(-45,-42))
devSVG('2010_canterbury_aftershocks_by_depth.svg', width=8, height=6) # inches
par(mar=c(6,6,3.1,0.2),cex=1)
with(chch, plot(QuakeTime, DEPTH, ylim=rev(range(DEPTH)), pch=16,cex=MAG^2/6, col=rgb(0.1,0.1,0.1,0.2),
main="Canterbury aftershocks by Depth and Time",ylab="Depth (km)"))
title(sub="Data source: GeoNet")
dev.off()
|
| Date | 8 September 2010 (original upload date) |
| Source | Transferred from en.wikipedia to Commons by Logan using CommonsHelper. |
| Author | Tayste at English Wikipedia |
Licensing
|
This work has been released into the public domain by its author, Tayste at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: Tayste grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2010-09-08 03:41 Tayste 578×434× (46616 bytes) Plot of 2010 Canterbury earthquake aftershocks by depth and time. Author: Tayste Data source: GeoNet (NZ) License: GNU public domain, free content Software: R
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:18, 6 February 2011 | | 578 × 434 (46 KB) | File Upload Bot (Magnus Manske) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Plot of 2010 Canterbury earthquake aftershocks by depth and time. Author: Tayste Data source: GeoNet (N |
File usage
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