Stuck... Can someone give me an example of imwriting the output from
ImageCmap? So this for instance does not work (taken from "Using Image.jl
for false-color
maps"<https://groups.google.com/d/msg/julia-users/3LPIMCkxeFc/Gi37L86T3cgJ>
):
using Images, Color
# build a sample image
datafloat = reshape(linspace(0.5, 1.5, 60000), 200, 300)
# convert the raw 0.5:1.5 data to a integer type, so we can index
dataint = iround(Uint8, 254*(datafloat - 0.5) + 1) # ranges from 1 to 255
# build our colormap
b = RGB(0,0,1)
w = RGB(1,1,1)
r = RGB(1,0,0)
cmaprgb = Array(RGB, 255)
f = linspace(0,1,128)
cmaprgb[1:128] = [(1-x)*b + x*w for x in f]
cmaprgb[129:end] = [(1-x)*w + x*r for x in f[2:end]]
img = ImageCmap(dataint, cmaprgb)
imwrite(img,"image.jpg")
and results in:
ERROR: no method scale(ScaleNone{Uint8},RGB)
I tried all sorts of tricks and changes to no avail...
Thanks in advance!
