Hi Dani, hmm, in order to still use the PyX graph key functionality you could fake the distance by moving the text around. You need to know, that PyX uses the box size returned by TeX on the TeX level, not from the output. (The idea behind it is, that you PyX knows the dimensions of the text without reading the dvi output from TeX already, but only from interacting with TeX itself. And this gives you, intentionally, additional options for modifications.) PyX will align the text as it was, when PyX doesn't know about the new vertical dimension of the text. While you can surely do it in TeX itself, such a modification is easily done in LaTeX using \raisebox. Here is a slight modification of the code I already suggested. You could make the vertical shift (i.e. additional distance) to be a parameter, if needed. I just used a fix value of 10 pt, to make the effect visible clearly.
from pyx import *
text.set(cls=text.LatexRunner)
class DummyPlotItem:
def __init__(self, title):
self.title = "\\raisebox{10pt}[0pt][0pt]{%s}" % title
def key_pt(self, c, x_pt, y_pt, width_pt, height_pt):
pass
class TitleKey(graph.key.key):
def __init__(self, title, **kwargs):
self.title = title
super().__init__(**kwargs)
def paint(self, plotitems):
return super().paint([DummyPlotItem(self.title)] + plotitems)
g = graph.graphxy(width=8,
x=graph.axis.linear(min=0, max=2),
y=graph.axis.linear(min=0, max=2),
key=TitleKey("$y$", pos="br", dist=0.1))
g.plot([graph.data.function("x(y)=y**4", title=r"$x^{1/4}$"),
graph.data.function("x(y)=y**2", title=r"$x^{1/2}$"),
graph.data.function("x(y)=y", title=r"$x$"),
graph.data.function("y(x)=x**2", title=r"$x^2$"),
graph.data.function("y(x)=x**4", title=r"$x^4$")],
[graph.style.line([color.gradient.Rainbow])])
g.writePDFfile()
When aligning the graph key at the top, the shift is not taken into account,
but you can modify the alignment parameters by passing proper values to the
graph key instance. A border around the graph key becomes more difficult to
fix. At a certain point it will probably be better to implement a proper
titlegraphkey or so, but maybe the suggested solution does it for you already
(when you don't need a border).
Best,
André
Am 17.05.2015 um 12:33 schrieb Mico Filós <[email protected]>:
> Sorry to bother you again, guys. I've just realized I would need some
> additional vertical space between the header and the rest of standard
> keyitems.
>
> I have tried to add a strut (a vertical rule of a given height) in the
> header, but then the vertical space the between all keyitems is enlarged
> evenly, which is not what I wanted. I actually need the header to stand
> out by separating it slightly from the rest. Can you suggest me a hack
> to fix this?
>
> Thanks a lot again,
>
> Dani
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