Re: [R] Gray level mosaic plot with shading_Friendly
On Tue, 6 Jul 2010, Michael Friendly wrote:
Michael Kubovy wrote:
Suppose we start with
data(Titanic)
mosaic(Titanic, shade = TRUE)
How do I combine the dashed box contours of shading_Friendly to indicate
negative residuals, with three levels of gray: dark for abs(Pearson Resid)
4, lighter for 4 abs(Pearson Resid) 2, and lightest for bs(Pearson
Resid) 2 ?
Do you mean [1] you want to plot positive residuals in color and negative in
gray scale?
Or [2] to fold + and - residuals by shading all according to abs(resid), and
distinguishing + from - by the dashed box outlines?
In fact, I designed this coding scheme so that mosaic plots in color (with my
blue - white - red scheme) would approximately do exactly what
you might want under [2], when rendered in B/W, since the fully saturated red
and blue are close in darkness in B/W.
And shading_hcl() has been written to do exactly what you want under [2].
While it is hard to come up with colors of different hues in HSV or HLS
space that have the same brightness (aka lightness/luminance) and the same
colorfulness (aka chroma), this is easy in HCL.
Try
mosaic(Titanic, gp=shading_Friendly)
save as a jpg/png and try converting to B/W with an image program and see if
this is good enough.
mosaic(Titanic, shade = TRUE)
is the same as
mosaic(Titanic, gp = shading_hcl)
which you can then modify to have different line types
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2))
If you print that on a grayscale printer you will see the same plot
without any chroma, i.e.,
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2, c = 0))
The shading_hcl() function is introduced in Zeileis et al. (2007, JCGS),
see ?shading_hcl, which provides more detailed references to HCL colors
etc.
Best,
Z
Alternatively, write your own, shading_Kubovy, modeled on
shading_Friendly -
function (observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = c(2/3, 0), lty = 1:2, interpolate = c(2, 4),
eps = 0.01, line_col = black, ...)
{
shading_hsv(observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = h, v = 1, lty = lty, interpolate = interpolate,
eps = eps, line_col = line_col, p.value = NA, ...)
}
environment: namespace:vcd
attr(,class)
[1] grapcon_generator
In the defaults, lty=1:2 is what distinguishes + and - for outline line type
hope this helps,
-Michael
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Gray level mosaic plot with shading_Friendly
Dear Achim and Michael,
Thank you so much. Indeed, mosaic(Titanic, gp = shading_hcl, gp_args = list(lty
= 1:2, c = 0)) does almost what I was looking for, except that for consistency
and clarity, I would have expected the negative values on the legend to be be
outlined with lty = 2.
Michael
On Jul 7, 2010, at 2:13 AM, Achim Zeileis wrote:
On Tue, 6 Jul 2010, Michael Friendly wrote:
Michael Kubovy wrote:
Suppose we start with
data(Titanic)
mosaic(Titanic, shade = TRUE)
How do I combine the dashed box contours of shading_Friendly to indicate
negative residuals, with three levels of gray: dark for abs(Pearson Resid)
4, lighter for 4 abs(Pearson Resid) 2, and lightest for bs(Pearson
Resid) 2 ?
Do you mean [1] you want to plot positive residuals in color and negative in
gray scale?
Or [2] to fold + and - residuals by shading all according to abs(resid), and
distinguishing + from - by the dashed box outlines?
In fact, I designed this coding scheme so that mosaic plots in color (with
my blue - white - red scheme) would approximately do exactly what
you might want under [2], when rendered in B/W, since the fully saturated
red and blue are close in darkness in B/W.
And shading_hcl() has been written to do exactly what you want under [2].
While it is hard to come up with colors of different hues in HSV or HLS space
that have the same brightness (aka lightness/luminance) and the same
colorfulness (aka chroma), this is easy in HCL.
Try
mosaic(Titanic, gp=shading_Friendly)
save as a jpg/png and try converting to B/W with an image program and see if
this is good enough.
mosaic(Titanic, shade = TRUE)
is the same as
mosaic(Titanic, gp = shading_hcl)
which you can then modify to have different line types
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2))
If you print that on a grayscale printer you will see the same plot without
any chroma, i.e.,
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2, c = 0))
The shading_hcl() function is introduced in Zeileis et al. (2007, JCGS), see
?shading_hcl, which provides more detailed references to HCL colors etc.
Best,
Z
Alternatively, write your own, shading_Kubovy, modeled on
shading_Friendly -
function (observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = c(2/3, 0), lty = 1:2, interpolate = c(2, 4),
eps = 0.01, line_col = black, ...)
{
shading_hsv(observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = h, v = 1, lty = lty, interpolate = interpolate,
eps = eps, line_col = line_col, p.value = NA, ...)
}
environment: namespace:vcd
attr(,class)
[1] grapcon_generator
In the defaults, lty=1:2 is what distinguishes + and - for outline line type
hope this helps,
-Michael
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Gray level mosaic plot with shading_Friendly
On Wed, 7 Jul 2010, Michael Kubovy wrote:
Dear Achim and Michael,
Thank you so much. Indeed, mosaic(Titanic, gp = shading_hcl, gp_args =
list(lty = 1:2, c = 0)) does almost what I was looking for, except that
for consistency and clarity, I would have expected the negative values
on the legend to be be outlined with lty = 2.
In the continuous legend, that is employed by default (legend_resbased),
it is visually not very compelling to show line types as well. But you can
set legend = legend_fixed which displays this information (but is less
intuitive concerning the interval ranges).
Best,
Z
Michael
On Jul 7, 2010, at 2:13 AM, Achim Zeileis wrote:
On Tue, 6 Jul 2010, Michael Friendly wrote:
Michael Kubovy wrote:
Suppose we start with
data(Titanic)
mosaic(Titanic, shade = TRUE)
How do I combine the dashed box contours of shading_Friendly to indicate negative
residuals, with three levels of gray: dark for abs(Pearson Resid) 4, lighter for 4
abs(Pearson Resid) 2, and lightest for bs(Pearson Resid) 2 ?
Do you mean [1] you want to plot positive residuals in color and negative in
gray scale?
Or [2] to fold + and - residuals by shading all according to abs(resid), and
distinguishing + from - by the dashed box outlines?
In fact, I designed this coding scheme so that mosaic plots in color (with my
blue - white - red scheme) would approximately do exactly what
you might want under [2], when rendered in B/W, since the fully saturated red
and blue are close in darkness in B/W.
And shading_hcl() has been written to do exactly what you want under [2]. While
it is hard to come up with colors of different hues in HSV or HLS space that
have the same brightness (aka lightness/luminance) and the same
colorfulness (aka chroma), this is easy in HCL.
Try
mosaic(Titanic, gp=shading_Friendly)
save as a jpg/png and try converting to B/W with an image program and see if
this is good enough.
mosaic(Titanic, shade = TRUE)
is the same as
mosaic(Titanic, gp = shading_hcl)
which you can then modify to have different line types
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2))
If you print that on a grayscale printer you will see the same plot without any
chroma, i.e.,
mosaic(Titanic, gp = shading_hcl, gp_args = list(lty = 1:2, c = 0))
The shading_hcl() function is introduced in Zeileis et al. (2007, JCGS), see
?shading_hcl, which provides more detailed references to HCL colors etc.
Best,
Z
Alternatively, write your own, shading_Kubovy, modeled on
shading_Friendly -
function (observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = c(2/3, 0), lty = 1:2, interpolate = c(2, 4),
eps = 0.01, line_col = black, ...)
{
shading_hsv(observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = h, v = 1, lty = lty, interpolate = interpolate,
eps = eps, line_col = line_col, p.value = NA, ...)
}
environment: namespace:vcd
attr(,class)
[1] grapcon_generator
In the defaults, lty=1:2 is what distinguishes + and - for outline line type
hope this helps,
-Michael
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Gray level mosaic plot with shading_Friendly
Suppose we start with data(Titanic) mosaic(Titanic, shade = TRUE) How do I combine the dashed box contours of shading_Friendly to indicate negative residuals, with three levels of gray: dark for abs(Pearson Resid) 4, lighter for 4 abs(Pearson Resid) 2, and lightest for bs(Pearson Resid) 2 ? Thanks, Michael __ Professor Michael Kubovy University of Virginia Department of Psychology for mail add: for FedEx or UPS add: P.O.Box 400400 Gilmer Hall, Room 102 Charlottesville, VA 22904-4400 McCormick Road USA Charlottesville, VA 22903 roomphone Office:B011 +1-434-982-4729 Lab:B019+1-434-982-4751 WWW:http://www.people.virginia.edu/~mk9y/ [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Gray level mosaic plot with shading_Friendly
Michael Kubovy wrote:
Suppose we start with
data(Titanic)
mosaic(Titanic, shade = TRUE)
How do I combine the dashed box contours of shading_Friendly to indicate negative
residuals, with three levels of gray: dark for abs(Pearson Resid) 4, lighter for 4
abs(Pearson Resid) 2, and lightest for bs(Pearson Resid) 2 ?
Do you mean [1] you want to plot positive residuals in color and
negative ingray scale?
Or [2] to fold + and - residuals by shading all according to abs(resid), and
distinguishing + from - by the dashed box outlines?
In fact, I designed this coding scheme so that mosaic plots in color
(with my blue - white - red scheme) would approximately do exactly what
you might want under [2], when rendered in B/W, since the fully
saturated red and blue are close in darkness in B/W.
Try
mosaic(Titanic, gp=shading_Friendly)
save as a jpg/png and try converting to B/W with an image program and
see if this is good enough.
Alternatively, write your own, shading_Kubovy, modeled on
shading_Friendly -
function (observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = c(2/3, 0), lty = 1:2, interpolate = c(2, 4),
eps = 0.01, line_col = black, ...)
{
shading_hsv(observed = NULL, residuals = NULL, expected = NULL,
df = NULL, h = h, v = 1, lty = lty, interpolate = interpolate,
eps = eps, line_col = line_col, p.value = NA, ...)
}
environment: namespace:vcd
attr(,class)
[1] grapcon_generator
In the defaults, lty=1:2 is what distinguishes + and - for outline line type
hope this helps,
-Michael
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
