R help - Sep 2016 - stfrtime function not returning proper results through sqldf package in R

Hi ,



  I have data something looks like below (or PFA), but when I?m extracting
month  using *strftime*  function through *sqldf* library ,it?s returning
below results but it?s not returning exact results ,it supposed to return
 05,05,05,06,06,06.Can anyone please guide me how to do that with *strftime*
function.



Thanks in advance.



Quiries :


library(scales)

# load data:
log <- data.frame(Date
c("2013/05/25","2013/05/28","2013/05/31","2013/06/01","2013/06/02","2013/06/05","2013/06/07"),
  Quantity = c(9,1,15,4,5,17,18))


# convert date variable from factor to date format:
log$Date <- as.Date(log$Date,
  "%Y/%m/%d") # tabulate all the options here
str(log)







Manu.
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This question is missing pieces... the example is incomplete. 
-- 
Sent from my phone. Please excuse my brevity.

On September 15, 2016 9:35:45 PM PDT, Manohar Reddy <manu.reddy52 at
gmail.com> wrote:
>Hi ,
>
>
>
>I have data something looks like below (or PFA), but when I?m
>extracting
>month  using *strftime*  function through *sqldf* library ,it?s
>returning
>below results but it?s not returning exact results ,it supposed to
>return
>05,05,05,06,06,06.Can anyone please guide me how to do that with
>*strftime*
>function.
>
>
>
>Thanks in advance.
>
>
>
>Quiries :
>
>
>library(scales)
>
># load data:
>log <- data.frame(Date
>c("2013/05/25","2013/05/28","2013/05/31","2013/06/01","2013/06/02","2013/06/05","2013/06/07"),
>  Quantity = c(9,1,15,4,5,17,18))
>
>
># convert date variable from factor to date format:
>log$Date <- as.Date(log$Date,
>  "%Y/%m/%d") # tabulate all the options here
>str(log)
>
>
>
>
>
>
>
>Manu.
>
>
>------------------------------------------------------------------------
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>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.

Jeff,



  Thanks,my question is when I?m using strftime function in sqldf package
it?s not returning the results which has supposed to return ,now how can I
get the excat month from my sample data with strftime function through
sqldf package ?



Manu.

On Fri, Sep 16, 2016 at 11:32 AM, Jeff Newmiller <jdnewmil at
dcn.davis.ca.us>
wrote:
> This question is missing pieces... the example is incomplete.
> --
> Sent from my phone. Please excuse my brevity.
>
> On September 15, 2016 9:35:45 PM PDT, Manohar Reddy <
> manu.reddy52 at gmail.com> wrote:
> >Hi ,
> >
> >
> >
> >I have data something looks like below (or PFA), but when I?m
> >extracting
> >month  using *strftime*  function through *sqldf* library ,it?s
> >returning
> >below results but it?s not returning exact results ,it supposed to
> >return
> >05,05,05,06,06,06.Can anyone please guide me how to do that with
> >*strftime*
> >function.
> >
> >
> >
> >Thanks in advance.
> >
> >
> >
> >Quiries :
> >
> >
> >library(scales)
> >
> ># load data:
> >log <- data.frame(Date >
>c("2013/05/25","2013/05/28","2013/05/31","2013/06/01","
> 2013/06/02","2013/06/05","2013/06/07"),
> >  Quantity = c(9,1,15,4,5,17,18))
> >
> >
> ># convert date variable from factor to date format:
> >log$Date <- as.Date(log$Date,
> >  "%Y/%m/%d") # tabulate all the options here
> >str(log)
> >
> >
> >
> >
> >
> >
> >
> >Manu.
> >
> >
>
>------------------------------------------------------------------------
> >
> >______________________________________________
> >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >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.
>
>

-- 


Thanks,
Manohar Reddy P
+91-9705302062.

	[[alternative HTML version deleted]]

Hi

Hm
> format(log$Date, "%m")
[1] "05" "05" "05" "06" "06"
"06" "06"
> strftime(log$Date, "%m")
[1] "05" "05" "05" "06" "06"
"06" "06"
>
works for me.

Just a blind guess, is an object date somwhere in your environment?

Cheers
Petr

> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Manohar
> Reddy
> Sent: Friday, September 16, 2016 6:36 AM
> To: R-help <r-help at r-project.org>
> Subject: [R] stfrtime function not returning proper results through sqldf
> package in R
>
> Hi ,
>
>
>
>   I have data something looks like below (or PFA), but when I?m extracting
> month  using *strftime*  function through *sqldf* library ,it?s returning
> below results but it?s not returning exact results ,it supposed to return
> 05,05,05,06,06,06.Can anyone please guide me how to do that with
> *strftime* function.
>
>
>
> Thanks in advance.
>
>
>
> Quiries :
>
>
> library(scales)
>
> # load data:
> log <- data.frame(Date >
c("2013/05/25","2013/05/28","2013/05/31","2013/06/01","2013/06/02","2013
> /06/05","2013/06/07"),
>   Quantity = c(9,1,15,4,5,17,18))
>
>
> # convert date variable from factor to date format:
> log$Date <- as.Date(log$Date,
>   "%Y/%m/%d") # tabulate all the options here
> str(log)
>
>
>
>
>
>
>
> Manu.
________________________________
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to z jak?hokoliv d?vodu i bez uveden? d?vodu.
- a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout;
Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce
s dodatkem ?i odchylkou.
- trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m
dosa?en?m shody na v?ech jej?ch n?le?itostech.
- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn?
pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn?
osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi
?i osob? j?m zastoupen? zn?m?.

This e-mail and any documents attached to it may be confidential and are
intended only for its intended recipients.
If you received this e-mail by mistake, please immediately inform its sender.
Delete the contents of this e-mail with all attachments and its copies from your
system.
If you are not the intended recipient of this e-mail, you are not authorized to
use, disseminate, copy or disclose this e-mail in any manner.
The sender of this e-mail shall not be liable for any possible damage caused by
modifications of the e-mail or by delay with transfer of the email.

In case that this e-mail forms part of business dealings:
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accept such offer; The sender of this e-mail (offer) excludes any acceptance of
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- the sender insists on that the respective contract is concluded only upon an
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- the sender of this e-mail informs that he/she is not authorized to enter into
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expressly authorized to do so in writing, and such authorization or power of
attorney is submitted to the recipient or the person represented by the
recipient, or the existence of such authorization is known to the recipient of
the person represented by the recipient.

Hi Petr,



 Thanks, For me also it?s working fine when I directly used that function
 but when I call strftime function through sqldf package it?s returning NA
values (PFA) ,but my requirement is I need to do that only sqldf as I?m
writing some ?T sql ? queries against on the dataset.



Manu.

On Fri, Sep 16, 2016 at 12:56 PM, PIKAL Petr <petr.pikal at precheza.cz>
wrote:
> Hi
>
> Hm
> > format(log$Date, "%m")
> [1] "05" "05" "05" "06"
"06" "06" "06"
> > strftime(log$Date, "%m")
> [1] "05" "05" "05" "06"
"06" "06" "06"
> >
>
> works for me.
>
> Just a blind guess, is an object date somwhere in your environment?
>
> Cheers
> Petr
>
>
> > -----Original Message-----
> > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of
Manohar
> > Reddy
> > Sent: Friday, September 16, 2016 6:36 AM
> > To: R-help <r-help at r-project.org>
> > Subject: [R] stfrtime function not returning proper results through
sqldf
> > package in R
> >
> > Hi ,
> >
> >
> >
> >   I have data something looks like below (or PFA), but when I?m
> extracting
> > month  using *strftime*  function through *sqldf* library ,it?s
returning
> > below results but it?s not returning exact results ,it supposed to
return
> > 05,05,05,06,06,06.Can anyone please guide me how to do that with
> > *strftime* function.
> >
> >
> >
> > Thanks in advance.
> >
> >
> >
> > Quiries :
> >
> >
> > library(scales)
> >
> > # load data:
> > log <- data.frame(Date > >
c("2013/05/25","2013/05/28","2013/05/31","2013/06/01","2013/06/02","2013
> > /06/05","2013/06/07"),
> >   Quantity = c(9,1,15,4,5,17,18))
> >
> >
> > # convert date variable from factor to date format:
> > log$Date <- as.Date(log$Date,
> >   "%Y/%m/%d") # tabulate all the options here
> > str(log)
> >
> >
> >
> >
> >
> >
> >
> > Manu.
>
> ________________________________
> Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou
> ur?eny pouze jeho adres?t?m.
> Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav?
> neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie
> vyma?te ze sv?ho syst?mu.
> Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email
> jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
> Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi
> ?i zpo?d?n?m p?enosu e-mailu.
>
> V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
> - vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en?
> smlouvy, a to z jak?hokoliv d?vodu i bez uveden? d?vodu.
> - a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout;
> Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany
> p??jemce s dodatkem ?i odchylkou.
> - trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve
> v?slovn?m dosa?en?m shody na v?ech jej?ch n?le?itostech.
> - odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za
> spole?nost ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n
> nebo p?semn? pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto
> emailu p??padn? osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich
> existence je adres?tovi ?i osob? j?m zastoupen? zn?m?.
>
> This e-mail and any documents attached to it may be confidential and are
> intended only for its intended recipients.
> If you received this e-mail by mistake, please immediately inform its
> sender. Delete the contents of this e-mail with all attachments and its
> copies from your system.
> If you are not the intended recipient of this e-mail, you are not
> authorized to use, disseminate, copy or disclose this e-mail in any manner.
> The sender of this e-mail shall not be liable for any possible damage
> caused by modifications of the e-mail or by delay with transfer of the
> email.
>
> In case that this e-mail forms part of business dealings:
> - the sender reserves the right to end negotiations about entering into a
> contract in any time, for any reason, and without stating any reasoning.
> - if the e-mail contains an offer, the recipient is entitled to
> immediately accept such offer; The sender of this e-mail (offer) excludes
> any acceptance of the offer on the part of the recipient containing any
> amendment or variation.
> - the sender insists on that the respective contract is concluded only
> upon an express mutual agreement on all its aspects.
> - the sender of this e-mail informs that he/she is not authorized to enter
> into any contracts on behalf of the company except for cases in which
> he/she is expressly authorized to do so in writing, and such authorization
> or power of attorney is submitted to the recipient or the person
> represented by the recipient, or the existence of such authorization is
> known to the recipient of the person represented by the recipient.
>


-- 


Thanks,
Manohar Reddy P
+91-9705302062.
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