R version 3.0.2 (2013-09-25) -- "Frisbee Sailing" Copyright (C) 2013 The R Foundation for Statistical Computing Platform: x86_64-pc-linux-gnu (64-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > x <- c(66329,50326,47182,42247,45796,48233,40079,39596,41275,41875,29784,7199,56166,33936,34532,30261,30857,35461,33525,27825,33624,35618,27329,8081,62751,37565,44749,37537,36825,50679,38488,36522,45545,43571,37343,11593,74784,49019,56601,47634,49807,50499,42092,39064,44376,43616,41059,17226,70170,43949,52333,41034,47760,76115,30918,32994,31947,26763,30251,18211,47957,31901,35560,30408,30083,35044,30475,28308,31395,36311,40426,38948) > par1 = '72' > par1 <- '72' > #'GNU S' R Code compiled by R2WASP v. 1.2.291 () > #Author: root > #To cite this work: Wessa P., (2012), Mean Plot (v1.0.4) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_meanplot.wasp/ > #Source of accompanying publication: Office for Research, Development, and Education > # > par1 <- as.numeric(par1) > (n <- length(x)) [1] 72 > (np <- floor(n / par1)) [1] 1 > arr <- array(NA,dim=c(par1,np+1)) > darr <- array(NA,dim=c(par1,np+1)) > ari <- array(0,dim=par1) > dx <- diff(x) > j <- 0 > for (i in 1:n) + { + j = j + 1 + ari[j] = ari[j] + 1 + arr[j,ari[j]] <- x[i] + darr[j,ari[j]] <- dx[i] + if (j == par1) j = 0 + } > ari [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 [39] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 > arr [,1] [,2] [1,] 66329 NA [2,] 50326 NA [3,] 47182 NA [4,] 42247 NA [5,] 45796 NA [6,] 48233 NA [7,] 40079 NA [8,] 39596 NA [9,] 41275 NA [10,] 41875 NA [11,] 29784 NA [12,] 7199 NA [13,] 56166 NA [14,] 33936 NA [15,] 34532 NA [16,] 30261 NA [17,] 30857 NA [18,] 35461 NA [19,] 33525 NA [20,] 27825 NA [21,] 33624 NA [22,] 35618 NA [23,] 27329 NA [24,] 8081 NA [25,] 62751 NA [26,] 37565 NA [27,] 44749 NA [28,] 37537 NA [29,] 36825 NA [30,] 50679 NA [31,] 38488 NA [32,] 36522 NA [33,] 45545 NA [34,] 43571 NA [35,] 37343 NA [36,] 11593 NA [37,] 74784 NA [38,] 49019 NA [39,] 56601 NA [40,] 47634 NA [41,] 49807 NA [42,] 50499 NA [43,] 42092 NA [44,] 39064 NA [45,] 44376 NA [46,] 43616 NA [47,] 41059 NA [48,] 17226 NA [49,] 70170 NA [50,] 43949 NA [51,] 52333 NA [52,] 41034 NA [53,] 47760 NA [54,] 76115 NA [55,] 30918 NA [56,] 32994 NA [57,] 31947 NA [58,] 26763 NA [59,] 30251 NA [60,] 18211 NA [61,] 47957 NA [62,] 31901 NA [63,] 35560 NA [64,] 30408 NA [65,] 30083 NA [66,] 35044 NA [67,] 30475 NA [68,] 28308 NA [69,] 31395 NA [70,] 36311 NA [71,] 40426 NA [72,] 38948 NA > darr [,1] [,2] [1,] -16003 NA [2,] -3144 NA [3,] -4935 NA [4,] 3549 NA [5,] 2437 NA [6,] -8154 NA [7,] -483 NA [8,] 1679 NA [9,] 600 NA [10,] -12091 NA [11,] -22585 NA [12,] 48967 NA [13,] -22230 NA [14,] 596 NA [15,] -4271 NA [16,] 596 NA [17,] 4604 NA [18,] -1936 NA [19,] -5700 NA [20,] 5799 NA [21,] 1994 NA [22,] -8289 NA [23,] -19248 NA [24,] 54670 NA [25,] -25186 NA [26,] 7184 NA [27,] -7212 NA [28,] -712 NA [29,] 13854 NA [30,] -12191 NA [31,] -1966 NA [32,] 9023 NA [33,] -1974 NA [34,] -6228 NA [35,] -25750 NA [36,] 63191 NA [37,] -25765 NA [38,] 7582 NA [39,] -8967 NA [40,] 2173 NA [41,] 692 NA [42,] -8407 NA [43,] -3028 NA [44,] 5312 NA [45,] -760 NA [46,] -2557 NA [47,] -23833 NA [48,] 52944 NA [49,] -26221 NA [50,] 8384 NA [51,] -11299 NA [52,] 6726 NA [53,] 28355 NA [54,] -45197 NA [55,] 2076 NA [56,] -1047 NA [57,] -5184 NA [58,] 3488 NA [59,] -12040 NA [60,] 29746 NA [61,] -16056 NA [62,] 3659 NA [63,] -5152 NA [64,] -325 NA [65,] 4961 NA [66,] -4569 NA [67,] -2167 NA [68,] 3087 NA [69,] 4916 NA [70,] 4115 NA [71,] -1478 NA [72,] NA NA > arr.mean <- array(NA,dim=par1) > arr.median <- array(NA,dim=par1) > arr.midrange <- array(NA,dim=par1) > for (j in 1:par1) + { + arr.mean[j] <- mean(arr[j,],na.rm=TRUE) + arr.median[j] <- median(arr[j,],na.rm=TRUE) + arr.midrange[j] <- (quantile(arr[j,],0.75,na.rm=TRUE) + quantile(arr[j,],0.25,na.rm=TRUE)) / 2 + } > overall.mean <- mean(x) > overall.median <- median(x) > overall.midrange <- (quantile(x,0.75) + quantile(x,0.25)) / 2 > postscript(file="/var/wessaorg/rcomp/tmp/1lljy1413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > plot(arr.mean,type='b',ylab='mean',main='Mean Plot',xlab='Periodic Index') > mtext(paste('#blocks = ',np)) > abline(overall.mean,0) > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/2hv3o1413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > plot(arr.median,type='b',ylab='median',main='Median Plot',xlab='Periodic Index') > mtext(paste('#blocks = ',np)) > abline(overall.median,0) > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/32szm1413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > plot(arr.midrange,type='b',ylab='midrange',main='Midrange Plot',xlab='Periodic Index') > mtext(paste('#blocks = ',np)) > abline(overall.midrange,0) > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/46ab01413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > z <- data.frame(t(arr)) > names(z) <- c(1:par1) > (boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Periodic Subseries')) $stats [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [1,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [2,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [3,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [4,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [5,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [,13] [,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [1,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [2,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [3,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [4,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [5,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [,25] [,26] [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34] [,35] [,36] [1,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [2,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [3,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [4,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [5,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [,37] [,38] [,39] [,40] [,41] [,42] [,43] [,44] [,45] [,46] [,47] [,48] [1,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [2,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [3,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [4,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [5,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [,49] [,50] [,51] [,52] [,53] [,54] [,55] [,56] [,57] [,58] [,59] [,60] [1,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [2,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [3,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [4,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [5,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [,61] [,62] [,63] [,64] [,65] [,66] [,67] [,68] [,69] [,70] [,71] [,72] [1,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 [2,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 [3,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 [4,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 [5,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 $n [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 [39] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 $conf [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [1,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [2,] 66329 50326 47182 42247 45796 48233 40079 39596 41275 41875 29784 7199 [,13] [,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [1,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [2,] 56166 33936 34532 30261 30857 35461 33525 27825 33624 35618 27329 8081 [,25] [,26] [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34] [,35] [,36] [1,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [2,] 62751 37565 44749 37537 36825 50679 38488 36522 45545 43571 37343 11593 [,37] [,38] [,39] [,40] [,41] [,42] [,43] [,44] [,45] [,46] [,47] [,48] [1,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [2,] 74784 49019 56601 47634 49807 50499 42092 39064 44376 43616 41059 17226 [,49] [,50] [,51] [,52] [,53] [,54] [,55] [,56] [,57] [,58] [,59] [,60] [1,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [2,] 70170 43949 52333 41034 47760 76115 30918 32994 31947 26763 30251 18211 [,61] [,62] [,63] [,64] [,65] [,66] [,67] [,68] [,69] [,70] [,71] [,72] [1,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 [2,] 47957 31901 35560 30408 30083 35044 30475 28308 31395 36311 40426 38948 $out numeric(0) $group numeric(0) $names [1] "1" "2" "3" "4" "5" "6" "7" "8" "9" "10" "11" "12" "13" "14" "15" [16] "16" "17" "18" "19" "20" "21" "22" "23" "24" "25" "26" "27" "28" "29" "30" [31] "31" "32" "33" "34" "35" "36" "37" "38" "39" "40" "41" "42" "43" "44" "45" [46] "46" "47" "48" "49" "50" "51" "52" "53" "54" "55" "56" "57" "58" "59" "60" [61] "61" "62" "63" "64" "65" "66" "67" "68" "69" "70" "71" "72" > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/5o7h81413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > z <- data.frame(t(darr)) > names(z) <- c(1:par1) > (boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Differenced Periodic Subseries')) $stats [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [1,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [2,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [3,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [4,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [5,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [,13] [,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [1,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [2,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [3,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [4,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [5,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [,25] [,26] [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34] [,35] [,36] [1,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [2,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [3,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [4,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [5,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [,37] [,38] [,39] [,40] [,41] [,42] [,43] [,44] [,45] [,46] [,47] [,48] [1,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [2,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [3,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [4,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [5,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [,49] [,50] [,51] [,52] [,53] [,54] [,55] [,56] [,57] [,58] [,59] [1,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [2,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [3,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [4,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [5,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [,60] [,61] [,62] [,63] [,64] [,65] [,66] [,67] [,68] [,69] [,70] [,71] [1,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [2,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [3,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [4,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [5,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [,72] [1,] NA [2,] NA [3,] NA [4,] NA [5,] NA $n [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 [39] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 $conf [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [1,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [2,] -16003 -3144 -4935 3549 2437 -8154 -483 1679 600 -12091 -22585 48967 [,13] [,14] [,15] [,16] [,17] [,18] [,19] [,20] [,21] [,22] [,23] [,24] [1,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [2,] -22230 596 -4271 596 4604 -1936 -5700 5799 1994 -8289 -19248 54670 [,25] [,26] [,27] [,28] [,29] [,30] [,31] [,32] [,33] [,34] [,35] [,36] [1,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [2,] -25186 7184 -7212 -712 13854 -12191 -1966 9023 -1974 -6228 -25750 63191 [,37] [,38] [,39] [,40] [,41] [,42] [,43] [,44] [,45] [,46] [,47] [,48] [1,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [2,] -25765 7582 -8967 2173 692 -8407 -3028 5312 -760 -2557 -23833 52944 [,49] [,50] [,51] [,52] [,53] [,54] [,55] [,56] [,57] [,58] [,59] [1,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [2,] -26221 8384 -11299 6726 28355 -45197 2076 -1047 -5184 3488 -12040 [,60] [,61] [,62] [,63] [,64] [,65] [,66] [,67] [,68] [,69] [,70] [,71] [1,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [2,] 29746 -16056 3659 -5152 -325 4961 -4569 -2167 3087 4916 4115 -1478 [,72] [1,] NA [2,] NA $out numeric(0) $group numeric(0) $names [1] "1" "2" "3" "4" "5" "6" "7" "8" "9" "10" "11" "12" "13" "14" "15" [16] "16" "17" "18" "19" "20" "21" "22" "23" "24" "25" "26" "27" "28" "29" "30" [31] "31" "32" "33" "34" "35" "36" "37" "38" "39" "40" "41" "42" "43" "44" "45" [46] "46" "47" "48" "49" "50" "51" "52" "53" "54" "55" "56" "57" "58" "59" "60" [61] "61" "62" "63" "64" "65" "66" "67" "68" "69" "70" "71" "72" > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/67opp1413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > z <- data.frame(arr) > names(z) <- c(1:np) > (boxplot(z,notch=TRUE,col='grey',xlab='Block Index',ylab='Value',main='Notched Box Plots - Sequential Blocks')) $stats [,1] [,2] [1,] 11593 NA [2,] 31648 NA [3,] 38718 NA [4,] 46489 NA [5,] 66329 NA $n [1] 72 0 $conf [,1] [,2] [1,] 35954.53 NA [2,] 41481.47 NA $out [1] 7199 8081 74784 70170 76115 $group [1] 1 1 1 1 1 $names [1] "1" NA > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/7xopj1413098208.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > z <- data.frame(cbind(arr.mean,arr.median,arr.midrange)) > names(z) <- list('mean','median','midrange') > (boxplot(z,notch=TRUE,col='grey',ylab='Overall Central Tendency',main='Notched Box Plots')) $stats [,1] [,2] [,3] [1,] 11593 11593 11593 [2,] 31648 31648 31648 [3,] 38718 38718 38718 [4,] 46489 46489 46489 [5,] 66329 66329 66329 $n [1] 72 72 72 $conf [,1] [,2] [,3] [1,] 35954.53 35954.53 35954.53 [2,] 41481.47 41481.47 41481.47 $out [1] 7199 8081 74784 70170 76115 7199 8081 74784 70170 76115 7199 8081 [13] 74784 70170 76115 $group [1] 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 $names [1] "mean" "median" "midrange" > dev.off() null device 1 > > try(system("convert tmp/1lljy1413098208.ps tmp/1lljy1413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/2hv3o1413098208.ps tmp/2hv3o1413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/32szm1413098208.ps tmp/32szm1413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/46ab01413098208.ps tmp/46ab01413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/5o7h81413098208.ps tmp/5o7h81413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/67opp1413098208.ps tmp/67opp1413098208.png",intern=TRUE)) character(0) > try(system("convert tmp/7xopj1413098208.ps tmp/7xopj1413098208.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 2.455 0.369 2.864