R help - Sep 2003 - lattice.xyplot: adding grid lines

Hallo,

I'd like to add grid lines to a lattice graph having 2 series of Y data.

See these 2 examples:



data(iris)

[1]
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
            data = iris, allow.multiple = TRUE, scales =
"same",type="l",
)


[2]
xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
            data = iris, allow.multiple = TRUE, scales =
"same",type="l",
panel = function(x, y) {
  panel.grid(h=2, v= 3)
   panel.xyplot(x, y)
  }
)


Question:  is it possible to keep all the formats of example [1] (colors,
type="l", ...), and just add the grids appearing in example 2.
Moreover I'd like to choose the color of the grid...

Thanks for you help,

Marc Mamin

On Tuesday 09 September 2003 04:49, Marc Mamin wrote:
> Hallo,
>
> I'd like to add grid lines to a lattice graph having 2 series of Y
data.
>
> See these 2 examples:
>
>
>
> data(iris)
>
> [1]
> xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
>             data = iris, allow.multiple = TRUE, scales =
"same",type="l",
> )
>
>
> [2]
> xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
>             data = iris, allow.multiple = TRUE, scales =
"same",type="l",
> panel = function(x, y) {
>   panel.grid(h=2, v= 3)
>    panel.xyplot(x, y)
>   }
> )
>
>
> Question:  is it possible to keep all the formats of example [1] (colors,
> type="l", ...), and just add the grids appearing in example 2.
> Moreover I'd like to choose the color of the grid...
Something like this should work:

xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
       data = iris, allow.multiple = TRUE, scales =
"same",type="l",
       panel = function(...) {
           panel.grid(h=2, v= 3, col="blue")
           panel.xyplot(...)
       }
)

Deepayan

Hallo, thank you for your answer,

there is still one problem in your solution:

Sepal.Length + Sepal.Width are considerd as a single serie of data...

Marc Mamin




-----Original Message-----
From: Deepayan Sarkar [mailto:deepayan at stat.wisc.edu]
Sent: Tuesday, September 09, 2003 3:03 PM
To: Marc Mamin; R-help
Subject: Re: [R] lattice.xyplot: adding grid lines


On Tuesday 09 September 2003 04:49, Marc Mamin wrote:
> Hallo,
>
> I'd like to add grid lines to a lattice graph having 2 series of Y
data.
>
> See these 2 examples:
>
>
>
> data(iris)
>
> [1]
> xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
>             data = iris, allow.multiple = TRUE, scales =
"same",type="l",
> )
>
>
> [2]
> xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
>             data = iris, allow.multiple = TRUE, scales =
"same",type="l",
> panel = function(x, y) {
>   panel.grid(h=2, v= 3)
>    panel.xyplot(x, y)
>   }
> )
>
>
> Question:  is it possible to keep all the formats of example [1] (colors,
> type="l", ...), and just add the grids appearing in example 2.
> Moreover I'd like to choose the color of the grid...
Something like this should work:

xyplot(Sepal.Length + Sepal.Width ~ Petal.Length ,
       data = iris, allow.multiple = TRUE, scales =
"same",type="l",
       panel = function(...) {
           panel.grid(h=2, v= 3, col="blue")
           panel.xyplot(...)
       }
)

Deepayan