Maybe this can be display-dependent. I just measured
the two diagonals on the plot and they're equal to
within less than one mm (possibly closer but that
was the accuracy of my measuring device (pencil and
strip of paper)).
-Peter Ehlers
On 2010-06-09 16:57, g...@ucalgary.ca wrote:
For me, the
For me, the angles circled are not exactly right.
See the pdf file: plot.pdf.
But it is OK.
Thanks Peter for your directions
-james
> On 2010-06-09 14:17, g...@ucalgary.ca wrote:
>> Thank.
>> Better. Seems that angles are close to but not equal to pi/2.
>> It may be because the plot box is not a sq
On 2010-06-09 14:17, g...@ucalgary.ca wrote:
Thank.
Better. Seems that angles are close to but not equal to pi/2.
It may be because the plot box is not a square: the length of
x-axis is not the same as the length of y-axis.
Even curves y = x and y = 1-x look like not orthogonal but
they should si
ject: Re: [R] Draw text with a box surround in plot.
>
> Rectangle R centered at (x,y) with width 2w and height 2h is given by
>
> x1=x-w
> y1=y-h
> x2=x+w
> y2=y-h
> x3=x+w
> y3=y+h
> x4=x-w
> y4=y+h
> polygon(c(x1,x2,x3,x4),c(y1,y2,y3,y4))
>
> Rotating
Thank.
Better. Seems that angles are close to but not equal to pi/2.
It may be because the plot box is not a square: the length of
x-axis is not the same as the length of y-axis.
Even curves y = x and y = 1-x look like not orthogonal but
they should since multiplication of their slopes is -1.
-jame
Your transformation assumes that the x- and y-axes are on the
same scale. Add 'asp = 1' to your plot() call to set the
appropriate aspect ratio.
-Peter Ehlers
On 2010-06-09 10:13, g...@ucalgary.ca wrote:
Rectangle R centered at (x,y) with width 2w and height 2h is given by
x1=x-w
y1=y-h
x2=x
Rectangle R centered at (x,y) with width 2w and height 2h is given by
x1=x-w
y1=y-h
x2=x+w
y2=y-h
x3=x+w
y3=y+h
x4=x-w
y4=y+h
polygon(c(x1,x2,x3,x4),c(y1,y2,y3,y4))
Rotating a point (u,v) at (0,0) by theta degree is given by matrix
[cos(theta),-sin(theta)
sin(theta),cos(theta)]
so we have a new
: [R] Draw text with a box surround in plot.
On 2010-06-02 16:57, g...@ucalgary.ca wrote:
> text() can draw text on a plot.
> Do we have a way/function to draw text with a box surround it?
> Thanks,
>
There may be a function in some package, but I would just use rect().
?rect
-
On 06/03/2010 08:57 AM, g...@ucalgary.ca wrote:
text() can draw text on a plot.
Do we have a way/function to draw text with a box surround it?
Hi james,
Have a look at boxed.labels and textbox in the plotrix package.
Jim
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R-help@r-project.org mail
On 2010-06-02 16:57, g...@ucalgary.ca wrote:
text() can draw text on a plot.
Do we have a way/function to draw text with a box surround it?
Thanks,
There may be a function in some package, but I would just use rect().
?rect
-Peter Ehlers
__
R-help
text() can draw text on a plot.
Do we have a way/function to draw text with a box surround it?
Thanks,
-james
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