bwplot puts the bars in the wrong place

You were right about the gdf$. Something else must have been giving me
the errors.

So I tried it with your scale suggestion:
         hrs = seq(1, 24, 1)
         hrlabs = as.character(seq(0,23,1))
             g = bwplot(tt~OnHour |Runway, data=gdf, horizontal=FALSE,
ylab="Taxi time (min)",
             main=title, xlab="Hour of day",
par.strip.text=list(cex=0.7), rot=90,  xlim=c(0, 25),
             scales=list(x = list(rot=90, cex=.6
             ,at=hrs, labels=hrlabs
             )),
             panel = function(x, ...) {
                 panel.grid(h = -1, v = -1)

                 panel.bwplot(x, ...)


           } )
         print(g)
And now the bars for hour 23 are missing

On 4/17/2010 4:16 PM, Peter Ehlers wrote:James,

Your problem with bwplot is with your scales definition.
bwplot places the plots at locations 1:24; you can then
supply arbitrary labels for these locations. Try changing
the following:

  xlim = c(-1, 24) to xlim = c(0, 25)
  at = hrs to at = hrs + 1 (or redefine hrs)

As to needing to use 'gdf$': this makes no sense to me.
What error occurs if you leave that off?

  -Peter Ehlers

On 2010-04-17 13:00, James Rome wrote:

David,

I did post a solved message:
          hrs = seq(0, 23, 1)
          hrlabs = as.character(seq(0,23,1))
          g = xyplot(gdf$tt~gdf$OnHour |gdf$Runway, data=gdf, ylab="Taxi
time (min)", main=title, xlab="Hour of day",
              xlim=c(-1, 24), scales=list(x = list(rot=90, cex=.6,
alternating=c(3,3,3,3),
              at=hrs, labels=hrlabs
              )),
              panel=function(x, ...) {
                  panel.grid(h = -1, v = 24)
                  panel.bwplot(x, horizontal=FALSE, col="black",...)

              }
          )
          print(g)
created the plot I sent you (withxyplot.png), with the 0 data plotted on
zero, and the 3AM data blank.

I arrived at this by doing xyplot and observing that the points were
plotted correctly. Then I added panel.bwplot() and it was still correct,
so I removed panel.xyplot() and it worked. But replacing the main call
to xyplot with bwplot gets it wrong.
For example, I did it with

          hrs = seq(0, 23, 1)
          hrlabs = as.character(seq(0,23,1))
          g = bwplot(gdf$tt~gdf$OnHFact |gdf$Runway, data=gdf,
ylab="Taxi
time (min)", main=title, xlab="Hour of day",
              xlim=c(-1, 24), horizontal=FALSE,
drop.unused.levels=FALSE,
              scales=list(x = list(rot=90, cex=.6,
alternating=c(3,3,3,3),
              at=hrs, labels=hrlabs
              )),
              panel=function(x, ...) {
                  panel.grid(h = -1, v = 24)
                  panel.bwplot(x,
col="black",...)
              }
          )
          print(g)
and get the attached withbwplotAndFactors.png, which is wrong. It was
also wrong with OnHour, and with drop.unused.levels=TRUE.

And I did indeed get errors if I left the gdf$ out of the formulas,
because it is defined in many data frames.

Thanks,
Jim

On 4/17/2010 12:35 PM, David Winsemius wrote:
On Apr 17, 2010, at 12:29 PM, James Rome wrote:

It has all the data needed, and only that data, which I got dinged on
before.

I was seeing a different number of points in some panels in your plot
compared to my plot. I have not downloaded the most recent dataset, and
from what you are saying here should  I assume it had not changed? But
your plot had a title that could not have been created by the posted
code , so i just don't know where you are with all of this. Are you
going to post a SOLVED message when it is finally answered?