Something like this? > as.Date(ISOdate(1998,1,1))+(1:100)-1 [1] "1998-01-01" "1998-01-02" "1998-01-03" "1998-01-04" "1998-01-05" [6] "1998-01-06" "1998-01-07" "1998-01-08" "1998-01-09" "1998-01-10" [11] "1998-01-11" "1998-01-12" "1998-01-13" "1998-01-14" "1998-01-15" [16] "1998-01-16" "1998-01-17" "1998-01-18" "1998-01-19" "1998-01-20" [21] "1998-01-21" "1998-01-22" "1998-01-23" "1998-01-24" "1998-01-25" [26] "1998-01-26" "1998-01-27" "1998-01-28" "1998-01-29" "1998-01-30" [31] "1998-01-31" "1998-02-01" "1998-02-02" "1998-02-03" "1998-02-04" [36] "1998-02-05" "1998-02-06" "1998-02-07" "1998-02-08" "1998-02-09" [41] "1998-02-10" "1998-02-11" "1998-02-12" "1998-02-13" "1998-02-14" [46] "1998-02-15" "1998-02-16" "1998-02-17" "1998-02-18" "1998-02-19" [51] "1998-02-20" "1998-02-21" "1998-02-22" "1998-02-23" "1998-02-24" [56] "1998-02-25" "1998-02-26" "1998-02-27" "1998-02-28" "1998-03-01" [61] "1998-03-02" "1998-03-03" "1998-03-04" "1998-03-05" "1998-03-06" [66] "1998-03-07" "1998-03-08" "1998-03-09" "1998-03-10" "1998-03-11" [71] "1998-03-12" "1998-03-13" "1998-03-14" "1998-03-15" "1998-03-16" [76] "1998-03-17" "1998-03-18" "1998-03-19" "1998-03-20" "1998-03-21" [81] "1998-03-22" "1998-03-23" "1998-03-24" "1998-03-25" "1998-03-26" [86] "1998-03-27" "1998-03-28" "1998-03-29" "1998-03-30" "1998-03-31" [91] "1998-04-01" "1998-04-02" "1998-04-03" "1998-04-04" "1998-04-05" [96] "1998-04-06" "1998-04-07" "1998-04-08" "1998-04-09" "1998-04-10"
Or, if you want month numbers and day of month as numerics: > as.POSIXlt(as.Date(ISOdate(1998,1,1))+(1:100)-1)$mon [1] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 [38] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 [75] 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 > as.POSIXlt(as.Date(ISOdate(1998,1,1))+(1:100)-1)$mday [1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 [26] 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 [51] 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 [76] 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 -pd > On 16 Jan 2021, at 07:48 , Jibrin Alhassan <jibrin.alhas...@unn.edu.ng> wrote: > > Hi Barradas > Sorry for the delay. Below is a section of my data. I have up to 1826 > covering 1998 to 2002 > year day Hr SWS > 1998 1 0 344. > 1998 2 0 346. > 1998 3 0 356. > 1998 4 0 332. > 1998 5 0 302. > 1998 6 0 329. > 1998 7 0 395. > 1998 8 0 359. > 1998 9 0 471. > 1998 10 0 392. > 1998 11 0 346. > 1998 12 0 387. > 1998 13 0 393. > 1998 14 0 367. > 1998 15 0 320. > 1998 16 0 309. > 1998 17 0 341. > 1998 18 0 329. > 1998 19 0 322. > 1998 20 0 429. > 1998 21 0 433. > 1998 22 0 398. > 1998 23 0 393. > 1998 24 0 393. > 1998 25 0 423. > 1998 26 0 426. > 1998 27 0 429. > 1998 28 0 386. > 1998 29 0 381. > 1998 30 0 375. > 1998 31 0 365. > 1998 32 0 450. > 1998 33 0 381. > 1998 34 0 316. > 1998 35 0 351. > 1998 36 0 306. > 1998 37 0 312. > 1998 38 0 320. > 1998 39 0 339. > 1998 40 0 395. > 1998 41 0 429. > 1998 42 0 479. > 1998 43 0 495. > 1998 44 0 407. > 1998 45 0 358. > 1998 46 0 360. > 1998 47 0 382. > 1998 48 0 394. > 1998 49 0 393. > 1998 50 0 435. > 1998 51 0 408. > 1998 52 0 360. > 1998 53 0 372. > 1998 54 0 376. > 1998 55 0 379. > 1998 56 0 361. > 1998 57 0 333. > 1998 58 0 321. > 1998 59 0 344. > 1998 60 0 412. > 1998 61 0 428. > 1998 62 0 401. > 1998 63 0 369. > 1998 64 0 343. > 1998 65 0 330. > 1998 66 0 317. > 1998 67 0 296. > 1998 68 0 282. > 1998 69 0 404. > 1998 70 0 530. > 1998 71 0 525. > 1998 72 0 484. > 1998 73 0 430. > 1998 74 0 388. > 1998 75 0 347. > 1998 76 0 337. > 1998 77 0 342. > 1998 78 0 305. > 1998 79 0 329. > 1998 80 0 420. > 1998 81 0 564. > 1998 82 0 483. > 1998 83 0 385. > 1998 84 0 393. > 1998 85 0 437. > 1998 86 0 441. > 1998 87 0 434. > 1998 88 0 471. > 1998 89 0 429. > 1998 90 0 412. > 1998 91 0 370. > 1998 92 0 326. > 1998 93 0 357. > 1998 94 0 338. > 1998 95 0 380. > 1998 96 0 339. > 1998 97 0 312. > 1998 98 0 313. > 1998 99 0 327. > 1998 100 0 362. > 1998 101 0 358. > 1998 102 0 387. > 1998 103 0 397. > 1998 104 0 375. > 1998 105 0 350. > 1998 106 0 357. > 1998 107 0 472. > 1998 108 0 526. > 1998 109 0 396. > 1998 110 0 374. > 1998 111 0 376. > 1998 112 0 355. > 1998 113 0 343. > 1998 114 0 425. > 1998 115 0 426. > 1998 116 0 479. > 1998 117 0 469. > 1998 118 0 425. > 1998 119 0 344. > 1998 120 0 341. > 1998 121 0 426. > 1998 122 0 601. > 1998 123 0 476. > 1998 124 0 670. > 1998 125 0 585. > 1998 126 0 496. > 1998 127 0 479. > 1998 128 0 569. > 1998 129 0 531. > 1998 130 0 489. > 1998 131 0 484. > 1998 132 0 480. > 1998 133 0 393. > 1998 134 0 332. > 1998 135 0 327. > 1998 136 0 493. > 1998 137 0 493. > 1998 138 0 430. > 1998 139 0 396. > 1998 140 0 408. > 1998 141 0 416. > 1998 142 0 376. > 1998 143 0 375. > 1998 144 0 415. > 1998 145 0 407. > 1998 146 0 398. > 1998 147 0 352. > 1998 148 0 349. > 1998 149 0 517. > 1998 150 0 597. > 1998 151 0 480. > 1998 152 0 435. > 1998 153 0 408. > 1998 154 0 441. > 1998 155 0 397. > 1998 156 0 374. > 1998 157 0 413. > 1998 158 0 582. > 1998 159 0 513. > 1998 160 0 459. > 1998 161 0 466. > 1998 162 0 414. > 1998 163 0 354. > 1998 164 0 341. > 1998 165 0 343. > 1998 166 0 369. > 1998 167 0 411. > 1998 168 0 355. > Thanks > Jibrin > > On Fri, Jan 15, 2021 at 7:15 PM Rui Barradas <ruipbarra...@sapo.pt> wrote: > >> Hello, >> >> No dataset was attached. Like the posting guide says, >> >> No binary attachments except for PS, PDF, and some image and archive >> formats (others are automatically stripped off because they can contain >> malicious software). Files in other formats and larger ones should >> rather be put on the web and have only their URLs posted. This way a >> reader has the option to download them or not. >> >> >> Can you post sample data? Please post the output of `dput(df)`. Or, if >> it is too big the output of `dput(head(df, 20))`. (`df` is the name of >> your dataset.) >> >> Hope this helps, >> >> Rui Barradas >> >> Às 11:30 de 15/01/21, Jibrin Alhassan escreveu: >>> Dear R users, >>> I am very new to R software. I have solar wind speed data needed for my >>> work. How do I convert day in the year to year, month, and day with R >>> software? I have used this code >>> as.Date(0, origin = "1998-01-01") >>> but it can only convert one day of the year at a time. Meanwhile, I have >> up >>> to the 1998-2002 data set. Attached is my data. >>> Kindly help, please. >>> Jibrin Alhassan >>> ______________________________________________ >>> R-help@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. >>> >> > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@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.