Ok,your example works. It appears that my issue is specifically with
curved text. Transformations do not seem to apply at all.
Here is a modified example from
http://pyx.sourceforge.net/examples/text/textalongpath.html
from pyx import *
c = canvas.canvas(attrs=[trafo.mirror()])
p = path.path(path.moveto(-2, 0), path.curveto(-1, 0, -1, 1, 0, 1),
path.curveto(1, 1, 1, 0, 2, 0))
c.stroke(p, [deco.curvedtext("\PyX{} is fun!",
textattrs=[trafo.mirror()]),
deco.curvedtext("left", textattrs=[text.halign.left,
text.vshift.mathaxis, trafo.mirror()], arclenfrombegin=0.5, exclude=0.1),
deco.curvedtext("right", textattrs=[text.halign.right,
text.vshift.mathaxis, trafo.mirror()], arclenfromend=0.5, exclude=0.1)])
c.writePDFfile("textalongpath")
Is this a bug?
On Sat, May 11, 2013 at 4:00 PM, André Wobst
<[email protected]>wrote:
> Hans,
>
> Sorry, I should have read your question more carefully.
>
> Well, there's probably no other options than applying transformations. A
> simple example works rather well:
>
> from pyx import *
> c = canvas.canvas([trafo.mirror()])
> c.stroke(path.line(0, 0, 2, 2))
> c.text(1, 1, "Hello, world!", [trafo.mirror()])
> c.writePDFfile()
>
> Unfortunately, we don't have a hook to apply the mirror trafo to all text
> boxes. You may define you some convenience method or alter the texrunner
> instance ... it probably depends on the use-case what is best.
>
>
> André
>
>
> Am 11.05.2013 um 22:42 schrieb Hans L:
>
> > I'm not using graphs specifically, I just mean to flip the y orientation
> of general rendering to a canvas.
> >
> > Hans
> >
> >
> > On Sat, May 11, 2013 at 3:34 PM, André Wobst <
> [email protected]> wrote:
> > Hi Hans,
> >
> > You can use the reverse flag of the axis, see
> http://pyx.sourceforge.net/manual/axis.html#graph.axis.axis.linear, or
> fix the axis range manually and set max to be smaller than min (which
> sounds a little crazy, but it perfectly does the trick as well).
> >
> > HTH, André
> >
> > Am 11.05.2013 um 21:55 schrieb Hans L:
> >
> > > Hello, I am new to using PyX and was wondering if it is possible to
> invert the Y axis so the top left of page is 0,0 and the y value increases
> as you go towards the bottom of the page?
> > >
> > > I experimented with passing a trafo to the canvas constructor:
> > > trafo.trafo(matrix=((1, 0), (0, -1)), vector=(0, canvasheight))
> > >
> > > This seems to work ok for graphics, but then of course all text is
> upside down.
> > > I tried applying a similar y flipping transformation to the textattrs
> to upright it again, but it did not seem to do anything.
> > >
> > > Is there any simple solution to this?
> > >
> > > Thanks,
> > > Hans
> > >
> > >
> ------------------------------------------------------------------------------
> > > Learn Graph Databases - Download FREE O'Reilly Book
> > > "Graph Databases" is the definitive new guide to graph databases and
> > > their applications. This 200-page book is written by three acclaimed
> > > leaders in the field. The early access version is available now.
> > > Download your free book today!
> http://p.sf.net/sfu/neotech_d2d_may_______________________________________________
> > > PyX-user mailing list
> > > [email protected]
> > > https://lists.sourceforge.net/lists/listinfo/pyx-user
> >
> > --
> > by _ _ _ Dr. André Wobst, Amselweg 22, 85716 Unterschleißheim
> > / \ \ / ) [email protected], http://www.wobsta.de/
> > / _ \ \/\/ / PyX - High quality PostScript and PDF figures
> > (_/ \_)_/\_/ with Python & TeX: visit http://pyx.sourceforge.net/
> >
> >
>
> --
> by _ _ _ Dr. André Wobst, Amselweg 22, 85716 Unterschleißheim
> / \ \ / ) [email protected], http://www.wobsta.de/
> / _ \ \/\/ / PyX - High quality PostScript and PDF figures
> (_/ \_)_/\_/ with Python & TeX: visit http://pyx.sourceforge.net/
>
>
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and
their applications. This 200-page book is written by three acclaimed
leaders in the field. The early access version is available now.
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may
_______________________________________________
PyX-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/pyx-user
