[R] Help with Parallel Processing

2020-05-21 Thread Ravi Jeyaraman
Dear Friends, I'm trying to run a bunch of tasks in parallel using 'Future' package and for some reason, it's not able to find the data frames that I want it to find. I've created the below sample program to show what I'm doing. Should I be exporting the Global data to each child process? I

[R] read_excel() ignore case of worksheet name?

2020-05-26 Thread Ravi Jeyaraman
Hello All, Is there any parameter to make read_excel() ignore the case-sensitiveness of the worksheet? I'm using the below to ready in multiple spreadsheets and it works perfectly fine if the worksheet is named 'Tables', but fails when it's named ' TABLES'. Any thoughts? lapply(1:nrow(SIS),

Re: [R] read_excel() ignore case of worksheet name?

2020-05-26 Thread Ravi Jeyaraman
I’ve already tried that and doesn’t work From: Erin Hodgess [mailto:erinm.hodg...@gmail.com] Sent: Tuesday, May 26, 2020 10:55 PM To: Ravi Jeyaraman Cc: r-help@r-project.org Subject: Re: [R] read_excel() ignore case of worksheet name? Here’s a thought, please. Could you use the tolower

Re: [R] read_excel() ignore case of worksheet name?

2020-05-27 Thread Ravi Jeyaraman
Ista, With few tweaks this worked beautifully. Thank you so much. -Original Message- From: Ista Zahn [mailto:istaz...@gmail.com] Sent: Tuesday, May 26, 2020 11:38 PM To: Ravi Jeyaraman Cc: Erin Hodgess ; r-help@r-project.org Subject: Re: [R] read_excel() ignore case of worksheet name

[R] Cumulative split of value in data frame column

2020-06-05 Thread Ravi Jeyaraman
Assuming, I have a data frame like this .. df <- data.frame(ID=1:3, FOO=c('A_B','A_B_C','A_B_C_D_E')) I want to do a 'cumulative split' of the values in column FOO based on the delimiter '_'. The end result should be like this .. ID FOO FOO_SPLIT1 FOO_SPLIT2 FOO_SPLIT

Re: [R] how to add a calculated column into a data frame

2020-06-05 Thread Ravi Jeyaraman
How about something like this? df <- data.frame(ID=1:3, DTVAL=c("2009-03-21","2010-05-11","2020-05-05")) df <- df %>% mutate(YEAR = as.numeric(format(as.Date(DTVAL,'%Y-%m-%d'), '%Y'))) -Original Message- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Charles Thuo Sent:

[R] sqldf and number of records affected

2020-06-11 Thread Ravi Jeyaraman
Hello all, When I execute a SQL using SQLDF, how do I get the number of records affected? I mean, if I run an UPDATE on a data frame, it doesn't tell me if and how many records got updated. I've read through the documentation and there don't seem to be a way to get this info unless it's done on a

Re: [R] sqldf and number of records affected

2020-06-11 Thread Ravi Jeyaraman
ldf() sqldf(c("pragma count_changes = 1", "update con set V1 = 0 where V1 > 5 ")) ans <- sqldf("select * from main.con") sqldf() -Original Message- From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com] Sent: Thursday, June 11, 2020 9:12 AM To: Ravi Je

Re: [R] sqldf and number of records affected

2020-06-11 Thread Ravi Jeyaraman
V1 > 5 "))) sqldf("select * from main.con") sqldf() -Original Message- From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com] Sent: Thursday, June 11, 2020 10:30 AM To: Ravi Jeyaraman Cc: r-help@r-project.org Subject: Re: [R] sqldf and number of records affected