[R] Coloring Stripchart Points, or Better, Lattice Equivalent

[Gabor Grothendieck]

Actually I am not sure if my prior answer was correct.  I think its ok
with one panel but
you might have to use a panel function is there are several. With one
panel it seems
ok:

stripplot(~ index, all, col = all$col, pch = all$sym)

On Sun, Jun 22, 2008 at 12:28 PM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> Try this:
>
> library(lattice)
> all$resp <- as.factor(all$resp)
> stripplot(~ index | resp * yr, all, col = all$col, pch = all$sym,
> layout = c(1, 4))
>
>
> On Sun, Jun 22, 2008 at 10:43 AM, Bryan Hanson <hanson at depauw.edu> wrote:
>> Below is a revised set of code that demonstrates my question a little more
>> clearly, I hope.
>>
>> When plotting all the data (5th panel), col & sym don't seem to be passed
>> correctly, as the (random) first value for col & sym are used for all points
>> (run the code, then run it again, you'll see how the 5th panel changes
>> depending upon col & sym for the first data point).  The 5th panel should
>> ideally be the "sum" of the 4 panels above, keeping col & sym intact.
>>
>> Also, I would rather have this in lattice or ggplot2, if anyone sees how to
>> convert it.
>>
>> Thanks once again, several of you have made very useful suggestions off
>> list.  Bryan
>>
>> samples <- 100 # must be even
>> index <- round(runif(samples, 1, 100)) # set up data
>> resp <- rbinom(samples, 1, 0.5)
>> yr <- rep(c("2005", "2006"), samples/2)
>> all <- data.frame(index, resp, yr)
>> all$sym <- ifelse(all$resp == 1, 1, 3)
>> all$col <- ifelse(all$yr == 2005, "red", "blue")
>> all$count <- rep(1, length(all$index))
>> all <- all[order(all$index, all$yr, all$resp),] # for easier inspection
>> row.names(all) <- c(1:samples) # for easier inspection
>>
>> one <- all[(all$yr == 2005 & all$resp == 0),] # First 2005/0 at top
>> two <- all[(all$yr == 2005 & all$resp == 1),] # Then 2005/1
>> three <- all[(all$yr == 2006 & all$resp == 0),] # Now 2006/0
>> four <- all[(all$yr == 2006 & all$resp == 1),] # Finally 2006/1
>>
>> par(mfrow = c(5, 1))
>> par(plt = c(0.1, 0.9, 0.25, 0.75))
>> stripchart(one$index, method = "stack", ylim = c(0,10), xlim = c(1,100), col
>> = one$col, pch = one$sym)
>> mtext("2005/0", side = 3)
>> stripchart(two$index, method = "stack", ylim = c(0,10), xlim = c(1,100), col
>> = two$col, pch = two$sym)
>> mtext("2005/1", side = 3)
>> stripchart(three$index, method = "stack", ylim = c(0,10), xlim = c(1,100),
>> col = three$col, pch = three$sym)
>> mtext("2006/0", side = 3)
>> stripchart(four$index, method = "stack", ylim = c(0,10), xlim = c(1,100),
>> col = four$col, pch = four$sym)
>> mtext("2006/1", side = 3)
>> stripchart(all$index, method = "stack", ylim = c(0,10), xlim = c(1,100), col
>> = all$col, pch = all$sym)
>> mtext("col & sym always taken from 1st data point when all data is
>> plotted!", side = 3)
>>
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>>
>