[R] Smoothing Data-dplyr

Please note that I have already asked this question on stackoverflow.com but did not get a satisfactory answer. I have a data set containing velocities of 2169 vehicles recorded at intervals of 0.1 seconds. So, there are many rows for an individual vehicle. Here I am reproducing the data only f

[R] Extracting values from rows which meet a condition in R 3.0.2

t so not all vehicles had svel==0. The vehicles which did stop didn't do it at the same time. Also, the number of rows in which svel==0 is different vehicle to vehicle. Thanks, Umair Durrani Master's candidate Civil and Environmental Engineering University of Windsor

[R] R 3.0.2 How to Split-Apply-Combine using various Columns

I have tried many things and also used some suggestions from stackoverflow but still am unable to get output like this with input data. Please help. Umair Durrani email: umai

[R] R 3.0.2 How to Split-Apply-Combine using various Columns

al data I found 22 as min and 9233 as max frame number. > This makes 30 time slots as 22-322, 322-622, ..., 9022-9233. I need following > output: TimeSlot Total-Cars Total-Trucks Total-Motorcycles MeanVelocity-Cars MeanVelocity-Trucks MeanVelocity-Motorcycles22-322322-622...9022-9233

[R] Corrected - R 3.0.2 How to Split-Apply-Combine using various Columns

Hello everyone,Here is the version using dput. I am sorry for the junk I posted before. I have a large vehicle trajectory data of which following is a small part: structure(list(vehicle = c(1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L,2L, 2L), frame = c(221L, 222L, 223L, 224L, 115L, 116L, 117L, 118L, 11

[R] Detecting Vehicle locations using R

I have a data frame of vehicle trajectories. Here's a snapshot: >dput(head(df))structure(list(vehicle = c(2L, 2L, 2L, 2L, 2L, 2L), frame = >43:48, globalx = c(6451214.156, 6451216.824, 6451219.616, 6451222.548, >6451225.462, 6451228.376), class = c(2L, 2L, 2L, 2L, 2L, 2L), velocity =

Re: [R] Detecting Vehicle locations using R

The problem is resolved already. Please don't include this question in future mailing list Umair Durrani email: umairdurr...@outlook.com > Subject: Re: [R] Detecting Vehicle locations using R > From: jdnew...@dcn.davis.ca.us > Date: Thu, 20 Feb 2014 20:06:28 -0800 &

[R] R 3.0.2 - How to create intervals and group another variable in those intervals?

t;, fixedBreaks = 4.5) : variable range greater than fixedBreaksEven after intervals are created, I need to group spacing and find the avg. for every interval. How can I do this? I have tried what I could, please help Umair Durrani email: umairdurr...@outlook.com

[R] How to sum a function over a specific range in R?

edY'? This is actually a data smoothing problem but default smoothing algorithms in R are not suitable for my data and I have to use this custom formula. Thanks in advance. Umair Durrani [[alternative HTML version deleted]] __

Re: [R] Apply function to one specific column / Alternative to for loop

This might be of some use : http://nsaunders.wordpress.com/2010/08/20/a-brief-introduction-to-apply-in-r/ Umair Durrani email: umairdurr...@outlook.com > Date: Sat, 16 Nov 2013 07:30:29 -0800 > From: ron...@gmx.net > To: r-help@r-project.org > Subject: [R] Apply function to

Re: [R] R for a stats intro for undergrads in the US?

/stats1 Hope this helps, Umair Durrani email: umairdurr...@outlook.com > Date: Sat, 16 Nov 2013 18:19:16 -0800 > From: spencer.gra...@prodsyse.com > To: R-help@r-project.org > Subject: [R] R for a stats intro for undergrads in the US? > > Hello, All: > > >Woul

[R] How to get the proportions of data with respect to two variables in R?

ind 'FUN'. Please help me in finding the proportions of each model within all classes of vehicles. Umair Durrani email: umairdurr...@outlook.com [[alternative HTML version deleted]] __ R-help@r

Re: [R] How to get the proportions of data with respect to two variables in R?

ycles VehicleLength VehicleWidth Proportion 10.0 3.0 1.0 Umair Durrani email: umairdurr...@outlook.com > Date: Sat, 30 Nov 2013 23:41:28 -0800 > From: smartpink...@yahoo.com > Subject: Re: [R] How to get the proportions of data with respect to two > variables in R? > To: r-help@r-project