My barplot has nicely left justified horizontal labels, the names of
people. Written using text() . I use par("user")[1] - OFFSET to get
the
placed nicely.
Now of course if i manually rescale/zoom the plot the labels get redrawn
at the 'wrong' location, including off the left of the plot.
I assume this is because the x-position is based off the size of a unit
in the plot, which changes when i rescale.
Can i get some pointers on how to adjust for this?
Thanks.
If you use axis instead of text the positions should get set in user coordinates. -- David> On Mar 10, 2014, at 6:34 PM, Geoffrey <lordgeoffrey at optusnet.com.au> wrote: > > My barplot has nicely left justified horizontal labels, the names of people. Written using text() . I use par("user")[1] - OFFSET to get the placed nicely. > > Now of course if i manually rescale/zoom the plot the labels get redrawn at the 'wrong' location, including off the left of the plot. > > I assume this is because the x-position is based off the size of a unit in the plot, which changes when i rescale. > > Can i get some pointers on how to adjust for this? > > Thanks. > > ______________________________________________ > R-help at 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.
On 03/10/2014 10:34 PM, Geoffrey wrote:> My barplot has nicely left justified horizontal labels, the names of > people. Written using text() . I use par("user")[1] - OFFSET to get the > placed nicely. > > Now of course if i manually rescale/zoom the plot the labels get redrawn > at the 'wrong' location, including off the left of the plot. > > I assume this is because the x-position is based off the size of a unit > in the plot, which changes when i rescale. > > Can i get some pointers on how to adjust for this? >Hi Geoffrey, This is a common problem when labels of arbitrary length are added to the axis of a plot. The gantt.chart function in the plotrix package works out the maximum length of the labels to be displayed and adjusts the margins of the plot to suit. gantt.chart uses the axis function to display the labels, and but you want left justification, so using mtext makes it a bit easier. I tried changing the size of the example in staircase.plot, which uses mtext, and it seemed to work okay. Jim