[R] Missing Values in Table Statement

PIKAL Petr petr.pikal at precheza.cz
Mon Jun 15 10:18:08 CEST 2015 

Hi

Why you are so reluctant to use dput for sending us part of your data?

The result of str indicates that that SCH_TIME is character vector in which some values are time and others are **empty** strings. But empty string does not mean it is missing string.

***Empty bottle of whisky is not missing bottle of whisky***.

So is.na correctly finds that none of your values are missing.

see this example

test<-sample(letters[1:5], 10, replace=T)
test[5:7]<-NA
str(test)
 chr [1:10] "b" "a" "d" "e" NA NA NA "d" "d" "c"

table(is.na(test))

FALSE  TRUE
    7     3

test[5:7]<-""
str(test)
 chr [1:10] "b" "a" "d" "e" "" "" "" "d" "d" "c"
table(is.na(test))

FALSE
   10

Cheers
Petr





> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Shivi82
> Sent: Saturday, June 13, 2015 6:36 AM
> To: r-help at r-project.org
> Subject: Re: [R] Missing Values in Table Statement
>
> HI Don,
>
> This is the exact result i need. However in my case i am not getting
> any value under TRUE whereas FALSE captures total observations in each
> variable.
> Please find the syntax and output from the code:
> table(test$ORIGIN_NAME,is.na(test$SCH_TIME))
>
> Output
>                                  FALSE
>   BAHADURGARH            15
>   BAREILLY                    44
>   BAWAL                        34
>   DELHI-11                   2446
>   DELHI-39                   170
>   DELHI-40                   86
>   DELHI NCR-12            1925
>
> The data from str is attached:
> data.frame':  10765 obs. of  18 variables:
>  $ ORIGIN         : chr  "DLI11" "DLI11" "NDA50" "NDA50" ...
>  $ ORIGIN_NAME    : chr  "DELHI-11" "DELHI-11" "NOIDA-50" "NOIDA-50"
> ...
>  $ DESTINATION    : chr  "NDA50" "NDA50" "DLI11" "NDA11" ...
>  $ DESTINATION_NM : chr  "NOIDA-50" "NOIDA-50" "DELHI-11" "NOIDA-11"
> ...
>  $ RPS_NO         : int  1350760 1366368 1352692 1354642 1354642
> 1349180
> 1349180 1356091 1348591 1348591 ...
>  $ VENDOR_NAME    : chr  "RAJIV GAUTAM" "RAJIV GAUTAM" "RAJIV GAUTAM"
> "RAJIV
> GAUTAM" ...
>  $ CR_DT          : chr  "13-Mar-15" "31-Mar-15" "15-Mar-15" "17-Mar-
> 15" ...
>  $ SCHD_MRKT      : chr  "SCHEDULE" "SCHEDULE" "SCHEDULE" "MARKET" ...
>  $ VHL_NO         : chr  "HR63A0931" "HR63A0931" "HR63A0931"
> "HR63A0931" ...
>  $ vhl_cap        : int  8 8 8 8 8 8 8 8 8 8 ...
>  $ SCH_TIME       : chr  "6:00" "6:00" "21:30" "" ...
>  $ ACTUAL_DEP_DATE: chr  "13/03/2015" "31/03/2015" "15/03/2015"
> "17/03/2015"
> ...
>  $ ACTUAL_DEP_TIME: chr  "6:30" "4:05" "13:37" "20:15" ...
>  $ WAYBILLS       : chr  "-" "-" "-" "3" ...
>  $ TOTAL_PKG      : int  0 0 0 40 256 6 0 0 16 427 ...
>  $ ACTUAL_WT      : int  0 0 0 744 3419 65 0 0 193 7223 ...
>  $ CHG_WT         : int  0 0 0 770 3730 70 0 0 210 7310 ...
>  $ RTE_CD         : chr  "DELHI-11-NOIDA-50(DLI11-NDA50)"
> "DELHI-11-NOIDA-50(DLI11-NDA50)" "NOIDA-50-DELHI-11(NDA50-DLI11)"
> "NOIDA-50-DELHI-11(NDA50-NDA11-DLI11)"
> Scheduled time here is character, could this be the reason for the
> incorrect result.
>
> Thanks, Shivi
>
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Missing-
> Values-in-Table-Statement-tp4708534p4708593.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.

________________________________
Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou určeny pouze jeho adresátům.
Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně jeho odesílatele. Obsah tohoto emailu i s přílohami a jeho kopie vymažte ze svého systému.
Nejste-li zamýšleným adresátem tohoto emailu, nejste oprávněni tento email jakkoliv užívat, rozšiřovat, kopírovat či zveřejňovat.
Odesílatel e-mailu neodpovídá za eventuální škodu způsobenou modifikacemi či zpožděním přenosu e-mailu.

V případě, že je tento e-mail součástí obchodního jednání:
- vyhrazuje si odesílatel právo ukončit kdykoliv jednání o uzavření smlouvy, a to z jakéhokoliv důvodu i bez uvedení důvodu.
- a obsahuje-li nabídku, je adresát oprávněn nabídku bezodkladně přijmout; Odesílatel tohoto e-mailu (nabídky) vylučuje přijetí nabídky ze strany příjemce s dodatkem či odchylkou.
- trvá odesílatel na tom, že příslušná smlouva je uzavřena teprve výslovným dosažením shody na všech jejích náležitostech.
- odesílatel tohoto emailu informuje, že není oprávněn uzavírat za společnost žádné smlouvy s výjimkou případů, kdy k tomu byl písemně zmocněn nebo písemně pověřen a takové pověření nebo plná moc byly adresátovi tohoto emailu případně osobě, kterou adresát zastupuje, předloženy nebo jejich existence je adresátovi či osobě jím zastoupené známá.

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.

More information about the R-help mailing list