>>>>> "John" == John Hunter <[EMAIL PROTECTED]> writes:
>>>>> "Eric" == Eric Firing <[EMAIL PROTECTED]> writes:
Eric> arrow 1/50th the width of the plot. Change the window
Eric> width, and the arrow length changes along with it. Zoom,
Eric> and it does not change, however. In all cases, the arrow
Eric> direction remains constant, regardless of window or view
Eric> limit manipulations. (This is all because of John's
Eric> transform magic--it is a little hard to understand at first,
Eric> but it certainly provides wonderful functionality.)
John> Hey someone said something nice about transforms!
John> Eric, I haven't had a chance to try this code out but I did
John> read through it and it looks very nice. A small comment:
John> fig.dpi is already a Value, so I don't think you want
John> + elif self.units == 'inches': + dpi = ax.figure.dpi.get() +
John> dx = T.Value(dpi)
John> because that is copy semantics and you probably want
John> reference semantics
John> + elif self.units == 'inches': + dx = ax.figure.dpi
John> That way if someone changes the figure dpi. Or maybe I'm
John> missing something and you really want copy.
John> fig.dpi.set(72.)
John> all of your transforms are automagically updated.
OK, let me try again. I added the "maybe I'm missing something"
sentence after reading through my post in the wrong place and it
totally garbled the meaning. What I meant to say was
A small comment: fig.dpi is already a Value, so I don't think you want
+ elif self.units == 'inches':
+ dpi = ax.figure.dpi.get()
+ dx = T.Value(dpi)
because that is copy semantics and you probably want reference
semantics
+ elif self.units == 'inches':
+ dx = ax.figure.dpi
That way if someone changes the figure dpi
fig.dpi.set(72.)
all of your transforms are automagically updated. Or maybe I'm missing
something and you really want copy.
JDH
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