Displaying 20 results from an estimated 300 matches similar to: "Chemical Names in Data Frames"
2012 Feb 13
2
finding and describing missing data runs in a time series
Hi -
I am trying to find and describe missing data in a time series. For instance, in the library openair, there is a data frame called "mydata":
library(openair)
head(mydata)
date ws wd nox no2 o3 pm10 so2 co pm25
1 1998-01-01 00:00:00 0.60 280 285 39 1 29 4.7225 3.3725 NA
2 1998-01-01 01:00:00 2.16 230 NA NA NA 37 NA NA NA
3 1998-01-01 02:00:00
2011 Sep 30
2
isotope superscripts ggplot2
Happy Friday fellow R users.
I need some help - I am trying to make a graph using ggplot 2 of some lead isotope ratios. Normally, the isotope mass number appears as a superscript before the chemical symbol. However, I cannot figure out how to do this ggplot2's axis labels. The closest I have come is using "." In front of the numbers I am superscripting e.g:
ggplot(....
2011 Nov 10
2
ggplot2 - regression statistics how to display on plot
Hello -
So I am trying to use ggplot2 to show a linear regression between two variables, but I want to also show the fit of the line on the graph as well.
I am using ggplot2 for other graphics in what I am working on, so even though this would be a fairly easy thing to do in Excel, I would prefer to do it in R to keep my look and feel, and I think ggplot2 is just cooler.
Here is a sample
2012 Apr 19
1
SmoothTrend in OpenAir
I'm trying to plot smooth trend using smoothTrend in OpenAir but I'm having
problems.
I used the following code.
---------------------------------------------------------------------------------
#Set my working dir to the dir with my files
setwd("c:/R")
#Load the openair library
library(openair)
#Load the data
mydata <- read.table("MCNP-pH.csv", header=TRUE,
2011 Jul 10
1
Chebyshev Inequality — MVUE
Hello,
I was interested in trying to write an R script to calculate a UCL for a lognormal distribution using the Chebyshev Inequality — MVUE Approach (based on EPA’s guidance found in http://www.epa.gov/oswer/riskassessment/pdf/ucl.pdf). This looks like it should be straight forward, but I am need to calculate an MVUE for the population mean and an MVUE for the population variance, which requires
2012 Oct 18
3
svyplot and svysmooth with hexbin
Hi all-
So sorry to bother you all with something pretty basic.
I am trying to add the lines method output from svysmooth to a svyplot with style="grayhex". However, the line either appears in the wrong place or if I am running in R Studio it causes the system to crash.
I know this is something to do with Lattice graphics, but for the life of me I can not figure out how. Dr. Lumley
2017 Jun 16
2
Varios gráficos en una vista en OpenAir
Funciona perfecto!
Gracias Carlos.
Atte.
Novvier Uscuchagua
De: Carlos Ortega [mailto:cof en qualityexcellence.es]
Enviado el: viernes, 16 de junio de 2017 13:46
Para: Novvier Marco Uscuchagua Cornelio <novvier en outlook.com.pe>
CC: r-help-es en r-project.org
Asunto: Re: Varios gráficos en una vista en OpenAir
Hola,
Prueba entonces esto, que sí que funciona...
#-----------------------
2017 Jun 16
2
Varios gráficos en una vista en OpenAir
Hola Carlos,
Me parece que timePlot genera los gráficos en un formato diferente.
Al ejecutar grid.arrange genera el siguiente error:
Error in gList(list(list(plot = list(formula = value ~ date | default, :
only 'grobs' allowed in "gList"
Gracias.
Atte.
Novvier Uscuchagua
De: Carlos Ortega [mailto:cof en qualityexcellence.es]
Enviado el: viernes, 16 de junio de 2017 12:38
2024 Apr 30
1
function import file csv Openair
Dear Evelina Ballato,
? Tue, 30 Apr 2024 10:36:32 +0000
Evelina Ballato <evelball at arpa.piemonte.it> ?????:
> In the Openair package it is possible to restore the import csv file
> function?
This question is best addressed to the maintainer of the package (see
the output of maintainer("openair")) if not to their GitHub issues at
2024 Apr 30
1
function import file csv Openair
In the Openair package it is possible to restore the import csv file function? it has been removed in the latest versions.
Infinitely grateful
Evelina Ballato
Evelina Ballato
Arpa Piemonte
Dipartimento Territoriale
Piemonte Nord Est - sede di Omegna
************************************************************************
Riservatezza/Confidentiality
Ai sensi del Regolamento UE 679/2016, del
2016 Jan 14
3
fechas
Estimados
En esta base de datos de variables clim?ticas, hay informaciones diarias, pero necesitamos las informaciones de ese a?o por semana. ?Se puede hacer eso en R? ?Podrian mostrarme un script? Y adem?s de algunas informaciones para profundizar en ese tema
Saludos cordiales
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2014 Sep 25
2
Campo Fecha y paquete openair
Estoy trabajando con el paquete openair y leyendo los datos desde un CSV.
Entre los campos que estoy levantando existe uno con el formato dd/mm/YYYY
hh:mm por ejemplo:
19/02/2014 12:42 pm
Cuando quiero consultar por fechas con las funciones del paquete openair
datoscont10<-selectByDate(dato$actualizado, start="01/03/2014",
end="09/09/2014")
me lista el siguiente mensaje:
2014 Sep 25
4
Campo Fecha y paquete openair
Eduardo,
Me parece que el problema es el locale para TIME y la interpretación de %p,
para no tener ese problema lo que tengo que hacer en mi caso es cambiar
LC_TIME:
> Sys.getlocale()
[1]
"LC_COLLATE=Spanish_Argentina.1252;LC_CTYPE=Spanish_Argentina.1252;LC_MONETARY=Spanish_Argentina.1252;LC_NUMERIC=C;LC_TIME=Spanish_Argentina.1252"
> Sys.setlocale("LC_TIME",
2011 Jun 27
3
Creating a Polar Plot with expanding points as radius increases
I'd like to create a polar plot similar to those created by the polarFreq
function in the openair package. However, this package seems to be specific
to wind speed and direction, and requires a "ws" (wind speed) and a "wd"
(wind direction) column. My data is unrelated to wind speed, but I'd like
to be able to get a plot that does what polarFreq's plots do; I'd
2017 Jun 01
4
errores con openair
Estimados como les va.
He tratado de profundizar sobre el paquete OPENAIR PARA MANEJO DE DATOS. Sin embargo, cada cosa que intento hacer, por muy pequeña que sea, me tira este error. En definitiva, no he podido hacer absolutamente nada¡¡
He probado de todo, pero ya me estoy aburriendo, a pesar que al parecer es una muy buena herramienta.
Saludos.
Error in as.POSIXct.default(x) :
do not know
2014 Sep 25
4
Campo Fecha y paquete openair
Sorry, la función por el formato que tienen tus fechas debe de ser
"dmy_hms()"...
Saludos,
Carlos Ortega
www.qualityexcellence.es
El 25 de septiembre de 2014, 18:14, Eduardo Bieñkowski <edukoski en gmail.com>
escribió:
> Si lo proceso con date<-ymd_hms(dato$actualizado) no me da error pero la
> transformación no es la correcta
>
> > head(dato$actualizado)
>
2016 Sep 08
2
calculo de datos de temperatura, openair u otra alternativa
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2012 Oct 17
0
FW: Vacancy Announcement - Lead Statistician (Health), GS-1530-14
VR,
James
James T. Durant, MSPH, CIH
Statistics and Data Analysis Team (proposed)
Science Support Branch (proposed)
Division of Community Health Investigations (proposed)
US Agency for Toxic Substances and Disease Registry
Mailing Address:
4770 Buford Highway, MS F-62
Atlanta, Georgia 30341
Telephone:
770-488-0668 (office)
_____________________________________________
From: Lewis,
2011 Dec 12
3
windrose color ramp issue
Greetings!
I'm having an issue with the windrose produced by the windrose
function from the circular package. For our weather stations in North
Carolina I'm helping with a script which takes hourly wind speed and
direction data to create windroses for our end users. One of the
stations in the mountains frequently reaches wind speed of 40 to 60
mph and in storms can reach wind speed over
2024 Mar 16
3
Problem when trying to install packages
Dear Rui;
Many thanks for your reply. I have installed Rtools (rtools43-5958-5975) on
my PC and I have R version 4.3.3 and 4.3.2 to install. Also I have
installed Rstudio through Anaconda Navigator.
But I do not know how to use Rtools for installing the R packages. I would
be more than happy if you help me.
Sincerely yours
> Dear Rui;
> I hope this email finds you well. I have a problem