[Biopython-dev] Modifications to CircularDrawer

[Leighton Pritchard]

On 5 Dec 2012, at Wednesday, December 5, 15:57, Peter Cock wrote:

On Wed, Dec 5, 2012 at 1:50 PM, David Martin <d.m.a.martin at dundee.ac.uk<mailto:d.m.a.martin at dundee.ac.uk>> wrote:
label_position: start|middle|end as per LinearDrawer

I am suggesting a break in backwards compatibility (old code would still
run but put the labels in different places) but for large circular diagrams
the difference should be minor - and I think it would be an overall
improvement.

Yep - I agree

label_orientation: upright|circular which determines the orientation of
the label. upright is the current behaviour. Circular would be oriented
to face clockwise for the forward strand and anticlockwise for the reverse

I would prefer making the existing (linear) option label_angle work nicely
on circular diagrams (which would make sense as part of reworking the
code to obey label_placement).

Good point - the automatic reorientation on either side of the circle (to respect the viewer's local gravity) could effectively be handled through a working label_angle for circular diagrams.  And more adventurous manual reorientation would also be possible ;)

One issue there is what the angle is defined with respect to: a 'vertical' reference on the page, or a tangent/normal to some point on the feature.  The first is straightforward, and might be what we want - the second will likely result in some odd - or attractive - patterns.

Comments in-line, if need be we could meet up to hash some of this
out in person (although I not be in the Dundee area next week).

Friday's good for me.

L.

--
Dr Leighton Pritchard
Information and Computing Sciences Group; Weeds, Pests and Diseases Theme
DG31, James Hutton Institute (Dundee)
Errol Road, Invergowrie, Perth and Kinross, Scotland, DD2 5DA
e:leighton.pritchard at hutton.ac.uk       w:http://www.hutton.ac.uk/staff/leighton-pritchard
gpg/pgp: 0xFEFC205C tel: +44(0)844 928 5428 x8827 or +44(0)1382 568827





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