def _set_transform(self):
ax = self.ax
if self.units in ('x', 'y'):
if self.units == 'x':
dx0 = ax.viewLim.ur().x() - ax.viewLim.ll().x()
dx1 = ax.bbox.ur().x() - ax.bbox.ll().x()
else:
dx0 = ax.viewLim.ur().y() - ax.viewLim.ll().y()
dx1 = ax.bbox.ur().y() - ax.bbox.ll().y()
dx = dx1/dx0
else:
if self.units == 'width':
dx = ax.bbox.ur().x() - ax.bbox.ll().x()
elif self.units == 'height':
dx = ax.bbox.ur().y() - ax.bbox.ll().y()
elif self.units == 'dots':
dx = T.Value(1)
elif self.units == 'inches':
dx = ax.figure.dpi
else:
raise ValueError('unrecognized units')
bb = T.Bbox(T.origin(), T.Point(dx, dx))
trans = T.get_bbox_transform(T.unit_bbox(), bb)
self.set_transform(trans)
return trans
def _set_transform(self):
if self.coord == 'data':
self.set_transform(self.Q.ax.transData)
elif self.coord == 'axes':
self.set_transform(self.Q.ax.transAxes)
elif self.coord == 'figure':
self.set_transform(self.Q.ax.figure.transFigure)
elif self.coord == 'inches':
dx = ax.figure.dpi
bb = T.Bbox(T.origin(), T.Point(dx, dx))
trans = T.get_bbox_transform(T.unit_bbox(), bb)
self.set_transform(trans)
else:
raise ValueError('unrecognized coordinates')
def rand_transform():
b1 = rand_bbox()
b2 = rand_bbox()
return get_bbox_transform(b1, b2)
x = rand(20)
y = rand(20)
transform = identity_transform()
xout, yout = transform.seq_x_y(x,y)
assert((x,y) == transform.seq_x_y(x,y))
# test bbox transforms; transform the unit coordinate system to
# "display coords"
bboxin = unit_bbox()
ll = Point( Value(10), Value(10) )
ur = Point( Value(200), Value(40) )
bboxout = Bbox(ll, ur)
transform = get_bbox_transform(bboxin, bboxout)
assert( transform.xy_tup( (0,0) )==(10, 10))
assert( transform.xy_tup( (1,1) )==(200, 40))
assert( transform.xy_tup( (0.5, 0.5) )==(105, 25))
# simulate a resize
ur.x().set(400)
ur.y().set(400)
assert( transform.xy_tup( (0,0) )==(10, 10))
assert( transform.xy_tup( (1,1) )==(400, 400))
assert( transform.xy_tup( (0.5, 0.5) )==(205, 205))
pairs = ( ( (0, 0 ), (10, 10 ) ),
( (1, 1 ), (400, 400) ),
( (0.5, 0.5), (205, 205) ) )
def rand_transform():
b1 = rand_bbox()
b2 = rand_bbox()
return get_bbox_transform(b1, b2)
assert (a1.xy_tup(pnt) == (7, 60)) x = rand(20) y = rand(20) transform = identity_transform() xout, yout = transform.seq_x_y(x, y) assert ((x, y) == transform.seq_x_y(x, y)) # test bbox transforms; transform the unit coordinate system to # "display coords" bboxin = unit_bbox() ll = Point(Value(10), Value(10)) ur = Point(Value(200), Value(40)) bboxout = Bbox(ll, ur) transform = get_bbox_transform(bboxin, bboxout) assert (transform.xy_tup((0, 0)) == (10, 10)) assert (transform.xy_tup((1, 1)) == (200, 40)) assert (transform.xy_tup((0.5, 0.5)) == (105, 25)) # simulate a resize ur.x().set(400) ur.y().set(400) assert (transform.xy_tup((0, 0)) == (10, 10)) assert (transform.xy_tup((1, 1)) == (400, 400)) assert (transform.xy_tup((0.5, 0.5)) == (205, 205)) pairs = (((0, 0), (10, 10)), ((1, 1), (400, 400)), ((0.5, 0.5), (205, 205))) for p1, p2 in pairs:
ax = subplot(212)
boxin = Bbox(
Point(ax.viewLim.ll().x(), Value(-20)),
Point(ax.viewLim.ur().x(), Value(20)))
height = ax.bbox.ur().y() - ax.bbox.ll().y()
boxout = Bbox(
Point(ax.bbox.ll().x(), Value(-1)*height),
Point(ax.bbox.ur().x(), Value(1) * height))
transOffset = get_bbox_transform(
unit_bbox(),
Bbox( Point( Value(0), ax.bbox.ll().y()),
Point( Value(1), ax.bbox.ur().y())
))
for i in range(numRows):
# effectively a copy of transData
trans = get_bbox_transform(boxin, boxout)
offset = (i+1)/(numRows+1)
trans.set_offset( (0, offset), transOffset)
thisLine = Line2D(
t, data[:,i]-data[0,i],
)
t = arange(numSamples) / float(numSamples) * 10.0
ticklocs = []
ax = subplot(212)
boxin = Bbox(Point(ax.viewLim.ll().x(), Value(-20)),
Point(ax.viewLim.ur().x(), Value(20)))
height = ax.bbox.ur().y() - ax.bbox.ll().y()
boxout = Bbox(Point(ax.bbox.ll().x(),
Value(-1) * height),
Point(ax.bbox.ur().x(),
Value(1) * height))
transOffset = get_bbox_transform(
unit_bbox(),
Bbox(Point(Value(0),
ax.bbox.ll().y()), Point(Value(1),
ax.bbox.ur().y())))
for i in range(numRows):
# effectively a copy of transData
trans = get_bbox_transform(boxin, boxout)
offset = (i + 1) / (numRows + 1)
trans.set_offset((0, offset), transOffset)
thisLine = Line2D(
t,
data[:, i] - data[0, i],
)