dear members,
I am a stock trader and a data science freelancer.
I am weighing the advantages of taking a R course in coursera to show my
proficiency in R in some freelancing sites. But I have already done extensive
research on Stock trading and data science, using R
I am completely stuck here, any help would be greatly appreciated!
On Thursday, 26 August, 2021, 04:18:31 pm GMT-4, bharat rawlley via R-help
wrote:
Hello, I am trying to use R to access the clinicaltrials.gov AACT database to
create a list of facility_investigators for a specific to
Thank you all of your help. The error message gone.
On Thursday, August 26, 2021, 04:07:59 PM PDT, Avi Gross via R-help
wrote:
This illustrates many things but in particular, why there is a difference
between saying you tried:
class(eth)
And saying the function you (think y
This illustrates many things but in particular, why there is a difference
between saying you tried:
class(eth)
And saying the function you (think you) called is documented to return a
data.frame.
Just typing something asking for the class would rapidly have shown it was not
a dat
Hello, I am trying to use R to access the clinicaltrials.gov AACT database to
create a list of facility_investigators for a specific topic.
The following code is an example of how to get a list of all clinical trials on
the topic TP53
library(dplyr)
library(RPostgreSQL)
aact = src_postgres(d
Hello,
I'm not so sure this is a bug, it appears to be behaving as intended from
the documentation. I would suggest using argument 'physical' from 'setkey'
to avoid reordering the rows. Something like:
x <- data.table::data.table(V1 = 9:0)
y <- data.table::copy(x)
data.table::setkey(x, V1, ph
Hello,
Package 'officer' has a function 'read_xlsx', so when you attach those
packages in that order, it returns 'read_xlsx' from package 'officer'
instead of 'readxl'. To avoid the confusion, instead of
eth <- read_xlsx("c:/temp/eth.xlsx")
try
eth <- readxl::read_xlsx("c:/temp/eth.xlsx")
whi
The packages "officer" and "readxl" both contain functions named
"read_xlsx". It looks like you want the one from readxl so refer to it as
readxl::read_xlsx instead of just read_xlsx.
-Bill
On Thu, Aug 26, 2021 at 12:03 PM Kai Yang via R-help
wrote:
> Hi all,
> I found something, but I don't
officer redefines the read_xlsx command. You should have got a message to
that effect when you loaded the officer package. You can use the version
from the readxl package with
readxl::read_xlsx() command.
John C Frain
3 Aranleigh Park
Rathfarnham
Dublin 14
Ireland
www.tcd.ie/Economics/staff/fr
Hi all,
I found something, but I don't know why it happen.
when I submitted the following code, the Eth is data frame. I can see 14 obs.
of 2 variables
library(readxl)
library(ggplot2)
eth <- read_xlsx("c:/temp/eth.xlsx")
but when I add more package (see below,) the Eth is "List of 1"
library(r
Hi All,
1. the eth is a data frame (not sure that based on error message?) that I load
it from excel file. Here is the code: eth <- read_xlsx("c:/temp/eth.xlsx")
2. I try to use the code to convert eth into eth2, but I got error message:
> eth2 <- data.frame(eth)
Error in as.data.frame.default(x[
Dear R-project,
Apologies if I am sending this to the wrong list, and thank you for your
enormous contribution.
I discovered a subtle interaction between the data.table package and
model.matrix function that influences the output to the point that you will get
completely erroneous results:
d
Kai,
The answer is fairly probable to find if you examine your variable "eth" as
that is the only time you are being asked to provide the argument as in
"ggplot(data=eth, ..) ...)
As the message states, it expects that argument to be a data frame or something
it can change into a data.frame.
Your series shows a strong seasonal pattern that looks fairly constant. I
would think that the adf style test is not appropriate. What are you
trying to achieve?
John C Frain
3 Aranleigh Park
Rathfarnham
Dublin 14
Ireland
www.tcd.ie/Economics/staff/frainj/home.html
https://jcfrain.wordpress.co
The class of 'eth' must be incorrect. You could try 'as.data.frame' or
possibly 'as.list' to convert 'eth' to an acceptable form.
On Thu, Aug 26, 2021, 11:53 Kai Yang via R-help
wrote:
> Hello List,
> I got an error message when I submit the code below
> ggplot(eth, aes(ymax=ymax, ymin=ymin, xma
eth is not a dataframe but of the class rxlsx. You'll need to convert eth
into a dataframe.
ir. Thierry Onkelinx
Statisticus / Statistician
Vlaamse Overheid / Government of Flanders
INSTITUUT VOOR NATUUR- EN BOSONDERZOEK / RESEARCH INSTITUTE FOR NATURE AND
FOREST
Team Biometrie & Kwaliteitszorg /
Hello List,
I got an error message when I submit the code below
ggplot(eth, aes(ymax=ymax, ymin=ymin, xmax=4, xmin=3, fill=ethnicity)) +
geom_rect() + coord_polar(theta="y") + xlim(c(2, 4) )
Error: `data` must be a data frame, or other object coercible by `fortify()`,
not an S3 object wit
Hello: I've downloaded this dataset, and when I plot it it is clearly
non-stationary
df <- read.csv('
https://raw.githubusercontent.com/ourcodingclub/CC-time-series/master/monthly_milk.csv
')
plot(df,type="l")
But when I apply the Augmented Dickie-Fuller Test I get a p value of 0.01,
implying t
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