[R] Extracting data from a zoo by date

Dear all, I know that it is a silly question, but I have a zoo object like this: valor1 valor2 01/02/08 36.7381 17.0097 01/03/08 36.9296 16.8331 01/04/08 35.6934 16.3539 01/07/08 35.3539 16.3791 01/08/08 36.3811 16.9340 01/09/08 37.9220 17.6655 The na

[R] Merging vectors

Dear R addicts, I´m trying to merge two vectors like these and I don´t want to use loops. EV [1] 9 16 19 21 67 71 82 87 110 112 141 156 201 211 248 264 272 298 331 [20] 341 347 361 373 468 490 493 504 508 806 830 833 883 885 897 953 955 SV [1] 3 21 28 33 229 379 396 532 535 541 6

Re: [R] Loops and vector operations

Thanks a lot, it was very helpful, I did something like that: EV <- ifelse(sprd > mediaSDP & sprd_d <= mediaSDP_d, -1, 0) SV <- ifelse(sprd > media & sprd_d <= media_d, -17, 0) EC <- ifelse(sprd < mediaSDN & sprd_d >= mediaSDN_d,1,0) SC <- ifelse(sprd < media & sprd_d >= media_d,17,0) in order t

[R] Loops and vector operations

Dear all, this is my first post and I´m very new at R, I don´t know if somebody can help with an issue. I´m doing some exercices and I don´t know if for example I can convert this for in an operation with vectors: for (i in 2:n){ if (ES[i-1]==0 && sprd[i-1]>mediaSDP[i-1] && sprd[i]<=medi