R help - Sep 2014 - depth of labels of axis

Hi there,

With the following code,

plot(1:5, xaxt = "n")
axis(1, at = 1:5, labels = c(expression(E[g]), "E", expression(E[j]), 
"E", expression(E[t])))

you may notice that the "E" within labels of axis(1) are not at the
same
depth. So the vision of axis(1) labels is something like wave.

Is there a possible way to typeset the labels so that they are have the 
same depth?

Any suggestions will be really appreciated. Thanks in advance.

Best regards,
Jinsong

On Sep 1, 2014, at 4:40 PM, Jinsong Zhao wrote:
> Hi there,
>
> With the following code,
>
> plot(1:5, xaxt = "n")
> axis(1, at = 1:5, labels = c(expression(E[g]), "E",  
> expression(E[j]), "E", expression(E[t])))
>
> you may notice that the "E" within labels of axis(1) are not at
the
> same depth. So the vision of axis(1) labels is something like wave.
>
> Is there a possible way to typeset the labels so that they are have  
> the same depth?
I'm not sure that we share an interpretation of the term "depth"
in
this context. I'm interpreting your request to me vertical alighnment.
> Any suggestions will be really appreciated.
Read the help page, especially the paragraph about padj. I will admit  
that I thought the description of the actions of padj=0 and padj=1  
were not what I experienced when I tried alternate versions. It did  
not seem to me that padj=0 produced "top alignment".


-- 

David Winsemius, MD
Alameda, CA, USA

The bottom of the expression is set by the lowest character (which can even
change for subscripted letters with descenders. The solution is to get axis() to
align the tops of the axis labels and move the line up to reduce the space, e.g.

plot(1:5, xaxt = "n")
axis(1, at = 1:5, labels = c(expression(E[g]), "E", expression(E[j]), 
"E", expression(E[t])), padj=1, mgp=c(3, .1, 0))
# Check alignment
abline(h=.7, xpd=TRUE, lty=3)

-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Jinsong Zhao
Sent: Monday, September 1, 2014 6:41 PM
To: r-help at r-project.org
Subject: [R] depth of labels of axis

Hi there,

With the following code,

plot(1:5, xaxt = "n")
axis(1, at = 1:5, labels = c(expression(E[g]), "E", expression(E[j]), 
"E", expression(E[t])))

you may notice that the "E" within labels of axis(1) are not at the
same
depth. So the vision of axis(1) labels is something like wave.

Is there a possible way to typeset the labels so that they are have the 
same depth?

Any suggestions will be really appreciated. Thanks in advance.

Best regards,
Jinsong

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