Re: [R] re move row if the column date_abandoned has a date in it
sorry David, im really new to R (my first week) and appreciate your help. Also I dont always know what info to give people on the forum (although im starting to catch the drift). heres what i get... summary(new_data4$date_abandoned) Min.1st Qu.Median Mean 3rd Qu. Max. NA's 1601 1998 2001 1993 2004 2009 315732 ls() [1] data new_data new_data2 new_data3 new_data4 small - head(new_data4, 20) dump(small, 20) Error in dump(small, 20) : cannot write to this connection frenchcr David Winsemius wrote: On Nov 14, 2009, at 5:24 PM, frenchcr wrote: I tried the following but it does the opposite of what i want: new_data5 - subset(new_data4, date_abandoned 0101) I want to remove the rows with dates and leave just the rows without a date. This removes all the rows that dont have a date in the date_abandoned column ...on a positive note, as i did this next... dim(new_data5) [1] 263 80 i now know that i have 263 dates in that column :) I want to remove the 263 rows with dates and leave just the rows without a date. Con=me on frenchcr. Stop making us guess. Give us enough information to work with. You asked for something which I construed as saying you wanted dates greater than the the first day of the year 101. You did not address this question. What do you get with str(new_data4) and summary(new_data4$date_abandoned) ? In order to know what sort of comparison to use we need to know what the data looks like. Even better if you offered the output from: small - head(new_data4, 20) dump(small, 20), -- David David Winsemius wrote: On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26354446.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26355689.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] re move row if the column date_abandoned has a date in it
On Nov 14, 2009, at 8:43 PM, frenchcr wrote: sorry David, im really new to R (my first week) and appreciate your help. Also I dont always know what info to give people on the forum (although im starting to catch the drift). heres what i get... summary(new_data4$date_abandoned) Min.1st Qu.Median Mean 3rd Qu. Max. NA's 1601 1998 2001 1993 2004 2009 315732 So new_data4$data_abandoned is not of type Date and is instead a character vector. If you are resisting turning it into a date and want to work with characters, you can, you just need to deal somehow with the items that are not 8 characters wide. What does 315732 represent? How were we supposed to interpret the starting date you gave of 0101? nchar(101) [1] 7 What does table(nchar(new_data4$date_abandoned)) give you? ls() [1] data new_data new_data2 new_data3 new_data4 small - head(new_data4, 20) dump(small, 20) Error in dump(small, 20) : cannot write to this connection Well, sorry, I meant to type dump(small, stdout()) ... As per the Posting Guide. -- David. David Winsemius wrote: On Nov 14, 2009, at 5:24 PM, frenchcr wrote: I tried the following but it does the opposite of what i want: new_data5 - subset(new_data4, date_abandoned 0101) I want to remove the rows with dates and leave just the rows without a date. This removes all the rows that dont have a date in the date_abandoned column ...on a positive note, as i did this next... dim(new_data5) [1] 263 80 i now know that i have 263 dates in that column :) I want to remove the 263 rows with dates and leave just the rows without a date. Con=me on frenchcr. Stop making us guess. Give us enough information to work with. You asked for something which I construed as saying you wanted dates greater than the the first day of the year 101. You did not address this question. What do you get with str(new_data4) and summary(new_data4$date_abandoned) ? In order to know what sort of comparison to use we need to know what the data looks like. Even better if you offered the output from: small - head(new_data4, 20) dump(small, 20), -- David David Winsemius wrote: On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26354446.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26355689.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] re move row if the column date_abandoned has a date in it
this works perfectly... new_data5 - new_data4[nchar(new_data4$date_abandoned) != 8, ] ...and i can now think of a few different ways to manipulate my data with what ive learned from these tricks, thanks alot David! David Winsemius wrote: On Nov 15, 2009, at 11:00 AM, frenchcr wrote: Yes they are not in date format, theyre just characters. the earliest date is 1601 i originally had one of 0101 00 00 (101 years BC)...this was a software problem. table(nchar(new_data4$date_abandoned)) 2 8 315732263 The 315732 are empty fields i thought. They are actually 2 characters wide. The 263 are dates, i want to remove their rows. If you want to remove the ones that are _not_ 8 characters long, then: new_data5 - new_data4[nchar(new_data4$date_abandoned) != 8, ] or: new_data5 - subset(new_data4, date_abandoned != 8) -- David. David Winsemius wrote: On Nov 14, 2009, at 8:43 PM, frenchcr wrote: sorry David, im really new to R (my first week) and appreciate your help. Also I dont always know what info to give people on the forum (although im starting to catch the drift). heres what i get... summary(new_data4$date_abandoned) Min.1st Qu.Median Mean 3rd Qu. Max. NA's 1601 1998 2001 1993 2004 2009 315732 So new_data4$data_abandoned is not of type Date and is instead a character vector. If you are resisting turning it into a date and want to work with characters, you can, you just need to deal somehow with the items that are not 8 characters wide. What does 315732 represent? How were we supposed to interpret the starting date you gave of 0101? nchar(101) [1] 7 What does table(nchar(new_data4$date_abandoned)) give you? ls() [1] data new_data new_data2 new_data3 new_data4 small - head(new_data4, 20) dump(small, 20) Error in dump(small, 20) : cannot write to this connection Well, sorry, I meant to type dump(small, stdout()) ... As per the Posting Guide. -- David. David Winsemius wrote: On Nov 14, 2009, at 5:24 PM, frenchcr wrote: I tried the following but it does the opposite of what i want: new_data5 - subset(new_data4, date_abandoned 0101) I want to remove the rows with dates and leave just the rows without a date. This removes all the rows that dont have a date in the date_abandoned column ...on a positive note, as i did this next... dim(new_data5) [1] 263 80 i now know that i have 263 dates in that column :) I want to remove the 263 rows with dates and leave just the rows without a date. Con=me on frenchcr. Stop making us guess. Give us enough information to work with. You asked for something which I construed as saying you wanted dates greater than the the first day of the year 101. You did not address this question. What do you get with str(new_data4) and summary(new_data4$date_abandoned) ? In order to know what sort of comparison to use we need to know what the data looks like. Even better if you offered the output from: small - head(new_data4, 20) dump(small, 20), -- David David Winsemius wrote: On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26354446.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting
[R] re move row if the column date_abandoned has a date in it
I want to go through a column in data called date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26352457.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] re move row if the column date_abandoned has a date in it
On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] re move row if the column date_abandoned has a date in it
I tried the following but it does the opposite of what i want: new_data5 - subset(new_data4, date_abandoned 0101) I want to remove the rows with dates and leave just the rows without a date. This removes all the rows that dont have a date in the date_abandoned column ...on a positive note, as i did this next... dim(new_data5) [1] 263 80 i now know that i have 263 dates in that column :) I want to remove the 263 rows with dates and leave just the rows without a date. David Winsemius wrote: On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26354446.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] re move row if the column date_abandoned has a date in it
On Nov 14, 2009, at 5:24 PM, frenchcr wrote: I tried the following but it does the opposite of what i want: new_data5 - subset(new_data4, date_abandoned 0101) I want to remove the rows with dates and leave just the rows without a date. This removes all the rows that dont have a date in the date_abandoned column ...on a positive note, as i did this next... dim(new_data5) [1] 263 80 i now know that i have 263 dates in that column :) I want to remove the 263 rows with dates and leave just the rows without a date. Con=me on frenchcr. Stop making us guess. Give us enough information to work with. You asked for something which I construed as saying you wanted dates greater than the the first day of the year 101. You did not address this question. What do you get with str(new_data4) and summary(new_data4$date_abandoned) ? In order to know what sort of comparison to use we need to know what the data looks like. Even better if you offered the output from: small - head(new_data4, 20) dump(small, 20), -- David David Winsemius wrote: On Nov 14, 2009, at 1:21 PM, frenchcr wrote: I want to go through a column in data called Bad name for a data.frame. Fortunes, dog and all that. date_abandoneddata[date_abandoned]and remove all the rows that have numbers greater than 1,010,000. Are you doing archeology? Given what you say next I wondered what range you were really asking for. The dates are in the format 20091114 so i'm just going to treat them as numbers for clean up purposes. I know that i use subset but not sure how to proceed from there. subdata - subset(data, date_abandoned 0101() The problem with 101 is that your specified minimum point had an insufficient number of places to be in MMDD format. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- View this message in context: http://old.nabble.com/remove-row-if-the-column-%22date_abandoned%22-has-a-date-in-it-tp26352457p26354446.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
