[R] how to compute when row length is different
hi guys..please help me with this i am working on two data frames one goes like this: DF1 Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean 1 SDM071 0 1B 60.5 19.0 45.0 2 SDM071 1 1B 46.0 23.0 42.5 3 SDM071 2 1B 52.5 24.0 40.0 4 SDM071 3 1B 42.0 21.5 45.0 5 SDM053 0 1B 66.5 28.5 56.5 6 SDM053 1 1B 47.0 29.0 47.5 7 SDM053 2 1B 52.0 31.0 44.0 8 SDM053 3 1B 36.0 34.0 41.5 9 SDM059 0 1B 47.5 41.5 29.0 10SDM059 1 1B 47.0 36.0 35.0 11SDM059 2 1B 41.5 42.0 32.5 12SDM059 3 1B 46.5 41.5 32.0 and the other one: DF2 SampleId RepairHours Denatured Dose_uM Day_0_Read1 Day_0_Read2 Day_45_Read1 8SDM071 0 1 C 124 120 108 9SDM071 0 1 25 123 128 77 10 SDM071 0 1 50 132 138 79 11 SDM071 0 1 100 118 116 68 12 SDM071 0 1 200 125 146 73 20 SDM071 1 1 C 113 117 113 21 SDM071 1 1 25 108 115 132 22 SDM071 1 1 50 105 96 94 23 SDM071 1 1 100 101 101 88 24 SDM071 1 1 200 114 106 89 32 SDM071 2 1 C 143 136 109 33 SDM071 2 1 25 126 147 110 34 SDM071 2 1 50 109 122 107 35 SDM071 2 1 100 114 118 89 36 SDM071 2 1 200 118 128 88 44 SDM071 3 1 C 103 111 116 45 SDM071 3 1 25 108 105 115 46 SDM071 3 1 50 118 99 88 47 SDM071 3 1 100 98 103 105 48 SDM071 3 1 200 112 105 96 56 SDM053 0 1 C 214 208 158 57 SDM053 0 1 25 159 214 178 58 SDM053 0 1 50 170 169 112 59 SDM053 0 1 100 149 158 124 60 SDM053 0 1 200 201 171 115 68 SDM053 1 1 C 149 166 120 69 SDM053 1 1 25 145 134 118 70 SDM053 1 1 50 159 169 130 71 SDM053 1 1 100 113 126 110 72 SDM053 1 1 200 118 112 120 these are just part of the frames.. i have to subtract the first five values of dataframe2 from one value from dataframe1 eg: subtract-DF2$Day_0_Read1-DF1$ ZeroMean if u notice the repair hours in both have to match...along with their id's. i have tried this zeroday_subtract1=DF1$Day_0_Read1 - DF2[DF1$RepairHours,]$ZeroMean but it dosent work please help me with this...i know its basic but i needhelp thx in advance -- View this message in context: http://r.789695.n4.nabble.com/how-to-compute-when-row-length-is-different-tp2538930p2538930.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] how to compute when row length is different
DF3 - merge(DF1, DF2, by=c(Sample_id, RepairHours), all.y=T) DF3$subtract - DF3$Day_0_Read1-DF3$ ZeroMean Nikhil Kaza Asst. Professor, City and Regional Planning University of North Carolina nikhil.l...@gmail.com On Sep 14, 2010, at 8:38 AM, rasanpreet wrote: hi guys..please help me with this i am working on two data frames one goes like this: DF1 Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean 1 SDM071 0 1B 60.5 19.0 45.0 2 SDM071 1 1B 46.0 23.0 42.5 3 SDM071 2 1B 52.5 24.0 40.0 4 SDM071 3 1B 42.0 21.5 45.0 5 SDM053 0 1B 66.5 28.5 56.5 6 SDM053 1 1B 47.0 29.0 47.5 7 SDM053 2 1B 52.0 31.0 44.0 8 SDM053 3 1B 36.0 34.0 41.5 9 SDM059 0 1B 47.5 41.5 29.0 10SDM059 1 1B 47.0 36.0 35.0 11SDM059 2 1B 41.5 42.0 32.5 12SDM059 3 1B 46.5 41.5 32.0 and the other one: DF2 SampleId RepairHours Denatured Dose_uM Day_0_Read1 Day_0_Read2 Day_45_Read1 8SDM071 0 1 C 124 120 108 9SDM071 0 1 25 123 128 77 10 SDM071 0 1 50 132 138 79 11 SDM071 0 1 100 118 116 68 12 SDM071 0 1 200 125 146 73 20 SDM071 1 1 C 113 117 113 21 SDM071 1 1 25 108 115 132 22 SDM071 1 1 50 105 96 94 23 SDM071 1 1 100 101 101 88 24 SDM071 1 1 200 114 106 89 32 SDM071 2 1 C 143 136 109 33 SDM071 2 1 25 126 147 110 34 SDM071 2 1 50 109 122 107 35 SDM071 2 1 100 114 118 89 36 SDM071 2 1 200 118 128 88 44 SDM071 3 1 C 103 111 116 45 SDM071 3 1 25 108 105 115 46 SDM071 3 1 50 118 99 88 47 SDM071 3 1 100 98 103 105 48 SDM071 3 1 200 112 105 96 56 SDM053 0 1 C 214 208 158 57 SDM053 0 1 25 159 214 178 58 SDM053 0 1 50 170 169 112 59 SDM053 0 1 100 149 158 124 60 SDM053 0 1 200 201 171 115 68 SDM053 1 1 C 149 166 120 69 SDM053 1 1 25 145 134 118 70 SDM053 1 1 50 159 169 130 71 SDM053 1 1 100 113 126 110 72 SDM053 1 1 200 118 112 120 these are just part of the frames.. i have to subtract the first five values of dataframe2 from one value from dataframe1 eg: subtract-DF2$Day_0_Read1-DF1$ ZeroMean if u notice the repair hours in both have to match...along with their id's. i have tried this zeroday_subtract1=DF1$Day_0_Read1 - DF2[DF1$RepairHours,]$ZeroMean but it dosent work please help me with this...i know its basic but i needhelp thx in advance -- View this message in context: http://r.789695.n4.nabble.com/how-to-compute-when-row-length-is-different-tp2538930p2538930.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] how to compute when row length is different
Hi: Just to be different, here's a data.table solution: library(data.table) # It's always a good idea to have your merge key variables match in each data frame/table names(DF1)[1] - 'SampleId' dt1 - data.table(DF1, key = 'SampleId, RepairHours') dt2 - data.table(DF2, key = 'SampleId, RepairHours') dt3 - merge(dt1, dt2) dim(dt3) [1] 30 12 # check # Do the subtraction dt3$diff - with(dt3, Day_0_Read1 - ZeroMean) If you want to perform operations between two data frames/tables, you need to merge the data first before you can perform the calculation(s). Dr. Kaza's solution works if you change the ID variable name first in DF1 the way I did and substitute SampleId for Sample_id in his code, or if you change the ID variable in DF2 to Sample_id and use his code as is. HTH, Dennis On Tue, Sep 14, 2010 at 5:38 AM, rasanpreet rasanpreet.k...@gmail.comwrote: hi guys..please help me with this i am working on two data frames one goes like this: DF1 Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean 1 SDM071 0 1B 60.5 19.0 45.0 2 SDM071 1 1B 46.0 23.0 42.5 3 SDM071 2 1B 52.5 24.0 40.0 4 SDM071 3 1B 42.0 21.5 45.0 5 SDM053 0 1B 66.5 28.5 56.5 6 SDM053 1 1B 47.0 29.0 47.5 7 SDM053 2 1B 52.0 31.0 44.0 8 SDM053 3 1B 36.0 34.0 41.5 9 SDM059 0 1B 47.5 41.5 29.0 10SDM059 1 1B 47.0 36.0 35.0 11SDM059 2 1B 41.5 42.0 32.5 12SDM059 3 1B 46.5 41.5 32.0 and the other one: DF2 SampleId RepairHours Denatured Dose_uM Day_0_Read1 Day_0_Read2 Day_45_Read1 8SDM071 0 1 C 124 120 108 9SDM071 0 1 25 123 128 77 10 SDM071 0 1 50 132 138 79 11 SDM071 0 1 100 118 116 68 12 SDM071 0 1 200 125 146 73 20 SDM071 1 1 C 113 117 113 21 SDM071 1 1 25 108 115 132 22 SDM071 1 1 50 105 96 94 23 SDM071 1 1 100 101 101 88 24 SDM071 1 1 200 114 106 89 32 SDM071 2 1 C 143 136 109 33 SDM071 2 1 25 126 147 110 34 SDM071 2 1 50 109 122 107 35 SDM071 2 1 100 114 118 89 36 SDM071 2 1 200 118 128 88 44 SDM071 3 1 C 103 111 116 45 SDM071 3 1 25 108 105 115 46 SDM071 3 1 50 118 99 88 47 SDM071 3 1 100 98 103 105 48 SDM071 3 1 200 112 105 96 56 SDM053 0 1 C 214 208 158 57 SDM053 0 1 25 159 214 178 58 SDM053 0 1 50 170 169 112 59 SDM053 0 1 100 149 158 124 60 SDM053 0 1 200 201 171 115 68 SDM053 1 1 C 149 166 120 69 SDM053 1 1 25 145 134 118 70 SDM053 1 1 50 159 169 130 71 SDM053 1 1 100 113 126 110 72 SDM053 1 1 200 118 112 120 these are just part of the frames.. i have to subtract the first five values of dataframe2 from one value from dataframe1 eg: subtract-DF2$Day_0_Read1-DF1$ ZeroMean if u notice the repair hours in both have to match...along with their id's. i have tried this zeroday_subtract1=DF1$Day_0_Read1 - DF2[DF1$RepairHours,]$ZeroMean but it dosent work please help me with this...i know its basic but i needhelp thx in advance -- View this message in context: http://r.789695.n4.nabble.com/how-to-compute-when-row-length-is-different-tp2538930p2538930.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list
Re: [R] how to compute when row length is different
You need to line up the rows before you do the arithmetic. Check out ?merge rasanpreet rasanpreet.k...@gmail.com wrote: hi guys..please help me with this i am working on two data frames one goes like this: DF1 Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean 1 SDM071 0 1B 60.5 19.0 45.0 2 SDM071 1 1B 46.0 23.0 42.5 3 SDM071 2 1B 52.5 24.0 40.0 4 SDM071 3 1B 42.0 21.5 45.0 5 SDM053 0 1B 66.5 28.5 56.5 6 SDM053 1 1B 47.0 29.0 47.5 7 SDM053 2 1B 52.0 31.0 44.0 8 SDM053 3 1B 36.0 34.0 41.5 9 SDM059 0 1B 47.5 41.5 29.0 10SDM059 1 1B 47.0 36.0 35.0 11SDM059 2 1B 41.5 42.0 32.5 12SDM059 3 1B 46.5 41.5 32.0 and the other one: DF2 SampleId RepairHours Denatured Dose_uM Day_0_Read1 Day_0_Read2 Day_45_Read1 8SDM071 0 1 C 124 120 108 9SDM071 0 1 25 123 128 77 10 SDM071 0 1 50 132 138 79 11 SDM071 0 1 100 118 116 68 12 SDM071 0 1 200 125 146 73 20 SDM071 1 1 C 113 117 113 21 SDM071 1 1 25 108 115 132 22 SDM071 1 1 50 105 96 94 23 SDM071 1 1 100 101 101 88 24 SDM071 1 1 200 114 106 89 32 SDM071 2 1 C 143 136 109 33 SDM071 2 1 25 126 147 110 34 SDM071 2 1 50 109 122 107 35 SDM071 2 1 100 114 118 89 36 SDM071 2 1 200 118 128 88 44 SDM071 3 1 C 103 111 116 45 SDM071 3 1 25 108 105 115 46 SDM071 3 1 50 118 99 88 47 SDM071 3 1 100 98 103 105 48 SDM071 3 1 200 112 105 96 56 SDM053 0 1 C 214 208 158 57 SDM053 0 1 25 159 214 178 58 SDM053 0 1 50 170 169 112 59 SDM053 0 1 100 149 158 124 60 SDM053 0 1 200 201 171 115 68 SDM053 1 1 C 149 166 120 69 SDM053 1 1 25 145 134 118 70 SDM053 1 1 50 159 169 130 71 SDM053 1 1 100 113 126 110 72 SDM053 1 1 200 118 112 120 these are just part of the frames.. i have to subtract the first five values of dataframe2 from one value from dataframe1 eg: subtract-DF2$Day_0_Read1-DF1$ ZeroMean if u notice the repair hours in both have to match...along with their id's. i have tried this zeroday_subtract1=DF1$Day_0_Read1 - DF2[DF1$RepairHours,]$ZeroMean but it dosent work please help me with this...i know its basic but i needhelp thx in advance -- View this message in context: http://r.789695.n4.nabble.com/how-to-compute-when-row-length-is-different-tp2538930p2538930.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. --- Jeff NewmillerThe . . Go Live... DCN:jdnew...@dcn.davis.ca.usBasics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/BatteriesO.O#. #.O#. with /Software/Embedded Controllers)
Re: [R] how to compute when row length is different
thank you so much Dennis...i got it[?] On Tue, Sep 14, 2010 at 7:01 AM, Dennis Murphy [via R] ml-node+2539020-1932381782-160...@n4.nabble.comml-node%2b2539020-1932381782-160...@n4.nabble.com wrote: Hi: Just to be different, here's a data.table solution: library(data.table) # It's always a good idea to have your merge key variables match in each data frame/table names(DF1)[1] - 'SampleId' dt1 - data.table(DF1, key = 'SampleId, RepairHours') dt2 - data.table(DF2, key = 'SampleId, RepairHours') dt3 - merge(dt1, dt2) dim(dt3) [1] 30 12 # check # Do the subtraction dt3$diff - with(dt3, Day_0_Read1 - ZeroMean) If you want to perform operations between two data frames/tables, you need to merge the data first before you can perform the calculation(s). Dr. Kaza's solution works if you change the ID variable name first in DF1 the way I did and substitute SampleId for Sample_id in his code, or if you change the ID variable in DF2 to Sample_id and use his code as is. HTH, Dennis On Tue, Sep 14, 2010 at 5:38 AM, rasanpreet [hidden email]http://user/SendEmail.jtp?type=nodenode=2539020i=0wrote: hi guys..please help me with this i am working on two data frames one goes like this: DF1 Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean 1 SDM071 0 1B 60.5 19.0 45.0 2 SDM071 1 1B 46.0 23.0 42.5 3 SDM071 2 1B 52.5 24.0 40.0 4 SDM071 3 1B 42.0 21.5 45.0 5 SDM053 0 1B 66.5 28.5 56.5 6 SDM053 1 1B 47.0 29.0 47.5 7 SDM053 2 1B 52.0 31.0 44.0 8 SDM053 3 1B 36.0 34.0 41.5 9 SDM059 0 1B 47.5 41.5 29.0 10SDM059 1 1B 47.0 36.0 35.0 11SDM059 2 1B 41.5 42.0 32.5 12SDM059 3 1B 46.5 41.5 32.0 and the other one: DF2 SampleId RepairHours Denatured Dose_uM Day_0_Read1 Day_0_Read2 Day_45_Read1 8SDM071 0 1 C 124 120 108 9SDM071 0 1 25 123 128 77 10 SDM071 0 1 50 132 138 79 11 SDM071 0 1 100 118 116 68 12 SDM071 0 1 200 125 146 73 20 SDM071 1 1 C 113 117 113 21 SDM071 1 1 25 108 115 132 22 SDM071 1 1 50 105 96 94 23 SDM071 1 1 100 101 101 88 24 SDM071 1 1 200 114 106 89 32 SDM071 2 1 C 143 136 109 33 SDM071 2 1 25 126 147 110 34 SDM071 2 1 50 109 122 107 35 SDM071 2 1 100 114 118 89 36 SDM071 2 1 200 118 128 88 44 SDM071 3 1 C 103 111 116 45 SDM071 3 1 25 108 105 115 46 SDM071 3 1 50 118 99 88 47 SDM071 3 1 100 98 103 105 48 SDM071 3 1 200 112 105 96 56 SDM053 0 1 C 214 208 158 57 SDM053 0 1 25 159 214 178 58 SDM053 0 1 50 170 169 112 59 SDM053 0 1 100 149 158 124 60 SDM053 0 1 200 201 171 115 68 SDM053 1 1 C 149 166 120 69 SDM053 1 1 25 145 134 118 70 SDM053 1 1 50 159 169 130 71 SDM053 1 1 100 113 126 110 72 SDM053 1 1 200 118 112 120 these are just part of the frames.. i have to subtract the first five values of dataframe2 from one value from dataframe1 eg: subtract-DF2$Day_0_Read1-DF1$ ZeroMean if u notice the repair hours in both have to match...along with their id's. i have tried this zeroday_subtract1=DF1$Day_0_Read1 - DF2[DF1$RepairHours,]$ZeroMean but it dosent work please help me with this...i know its basic but i needhelp thx in advance -- View this message in context:
