R: A misc function for finding NN time slots in pressure profile...

pressureProfileSummary {protViz} | R Documentation

## A misc function for finding NN time slots in pressure profile data.

### Description

The function computes a list of Pc values for the in time provided NN using findNN. It returns file, time, timediff and the Pc valyes as list.

### Usage

        pps(data, time)

### Arguments

`data` | the data set to be plotted. It reqires the following attributes: `Pc, file, time`.
`time` | specifies the timeslots to be used.

### Details

The function is useful for levelplots. It can be used to make a quality check over a sequence of experiments. At our site, it is used in conjugtion with Eksigent pumps. These devices store a text file at the instrument pc. These files are preprocessed as specified in the file structure.

### Author(s)

Christian Panse 2012

### Examples

    library(lattice)
    data(pressureProfile)

    # do the pre processing
    pps.data<-pps(pressureProfile, time=seq(25,40,by=5))

    print(xyplot(Pc ~ as.factor(file) | paste("time =",
        as.character(time), "minutes"),
        panel = function(x, y){
            m<-sum(y)/length(y)
            m5<-(max(y)-min(y))*0.05
            panel.abline(h=c(m-m5,m,m+m5),
                col=rep("#ffcccc",3),lwd=c(1,2,1))
            panel.grid(h=-1, v=0)
            panel.xyplot(x, y)
        },
        ylab='Pc [psi]',
        layout=c(1,4),
        sub='The three read lines indicate avg plus min 5%.',
        scales = list(x = list(rot = 45)),
        data=pps.data))

[Package protViz version 0.6.8 Index]