def draw(self):
svg = self.svg
svg.empty()
for i in xrange(self.ncolors):
for j in xrange(self.ncolors):
color = color_scale.color(color_scale.color64(i, j))
svg.rect("R_" + color, i * self.dx, j * self.dy, self.dx, self.dy, color)
bary = self.palette_side + self.bar_region / 2 - self.bar_height / 2
dhistogram = self.display_histogram()
maxcount = 1
if dhistogram:
maxcount = float(max(dhistogram.values()))
for i in xrange(self.palette_side):
color_value = self.interpolation_value(i)
color = self.scale.interpolate_color(color_value)
adjustment = (dhistogram.get(i, 0) / maxcount) * self.histogram_region
#print i, adjustment
svg.rect("V" + color,
i, bary,
1, adjustment + self.bar_height, color)
circley = self.palette_side + self.bar_region / 2
m = self.scale.minvalue
M = self.scale.maxvalue
for (value, clr) in self.scale.breakpoints:
color = color_scale.color(clr)
circlex = (value - m)/(M - m) * self.palette_side
name = "breakpoint_" + color
self.add_circle(name, circlex, circley, color)
svg.text(None, 0, 0, self.title, "black")
svg.text(None, 0, bary, "%3.1f" % m, "black")
atts = {"text-anchor": "end"}
svg.text(None, self.palette_side, bary, "%3.1f" % M, "black", **atts)
if m < 0 and M > 0:
zvalue = self.display_value(0)
svg.text(None, zvalue, bary, "0", "black")
svg.send_commands()
def draw_heat_map(canvas, a, dx, dy):
lowclr = clr(200, 255, 255)
highclr = clr(255, 200, 0)
maxval = numpy.max(a)
minval = numpy.min(a)
diff = maxval - minval
if diff<0.1:
return
for i in xrange(len(a)):
rowi = a[i]
for j in xrange(len(rowi)):
val = rowi[j]
intensity = (val - minval)/diff
iclr = (1-intensity)*lowclr + intensity*highclr
canvas.rect(None, i*dx, j*dy, dx, dy, color(iclr))
canvas.send_commands()