Auto-adjusting figure height, imshow equal

Hi all!
I am preparing a journal article and the figures should have a fixed width of 3 inches, with as thin white border around as possible. The figure does an imshow with equal axes:
My problem is: I do not know in advance the height of my figure to specify figsize. The height should vary so that the whole figure (with ticks, legends and colorbanr) fits tightly into a 3 x ? inch box.

I have already tried bbox_inches=‘tight’ for savefig and looked at HowTo FAQ: automatically make room for tick labels for possible ideas but do no have a clue yet.
Any suggestion is welcome.

Thx very much!

Kornel

Hi all!

I am preparing a journal article and the figures should have a fixed width
of 3 inches, with as thin white border around as possible. The figure does
an imshow with equal axes:
My problem is: I do not know in advance the height of my figure to specify
figsize. The height should vary so that the whole figure (with ticks,
legends and colorbanr) fits tightly into a 3 x ? inch box.

I have already tried bbox_inches='tight' for savefig and looked at HowTo
FAQ: automatically make room for tick labels for possible ideas but do no
have a clue yet.
Any suggestion is welcome.

Do you want you figure width to be exactly 3 inch? Otherwise, I wonder
why bbox_inches="tight" does not work.

My recommendation is

1) create a figure with high enough height.
2) adjust subplot parameters either manually or using the method
described in the FAQ.
3) call savefig with tight bbox option.

If you want your figure width to be exactly 3 inch, try something like below

fig = figure(1, figsize=(3,7))
ax = subplot(111)
ax.set_aspect(1)

def get_tightbbox(renderer, fig=fig):
    from matplotlib.figure import Figure
    from matplotlib.transforms import Bbox
    bbox = Figure.get_tightbbox(fig, renderer)
    w, h = fig.get_size_inches()
    x1, y1, x2, y2 = bbox.extents
    return Bbox.from_extents(0, y1, w, y2)

fig.get_tightbbox = get_tightbbox

savefig("a.png", bbox_inches="tight")

-JJ

···

On Tue, Feb 23, 2010 at 5:43 AM, Kornél Jahn <kjahn.public@...287...> wrote:

Thx very much!

Kornel

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