Sorry people, this is the right version:
function imwrite{T <: FloatingPoint}(x::Array{T,2},fname)
width, height = size(x)
open(fname,"w") do stream
write(stream, "P6\n$width $height\n255\n")
for j in 1:height, i in 1:width, k = 1:3
write(stream,round(UInt8,255x[i,j]))
end
end
end
Yakir Gagnon
The Queensland Brain Institute (Building #79)
The University of Queensland
Brisbane QLD 4072
Australia
cell +61 (0)424 393 332
work +61 (0)733 654 089
On Fri, Aug 7, 2015 at 7:26 PM, Yakir Gagnon <12.ya...@gmail.com> wrote:
> In case this helps anyone, here’s a functioning barebone version:
>
> function imwrite{T <: FloatingPoint}(x::Array{T,2},fname)
> height,width = size(x)
> open(fname,"w") do stream
> write(stream, "P6\n$width $height\n255\n")
> for j in 1:width, i in 1:height, k = 1:3
> write(stream,round(UInt8,255x[i,j]))
> end
> end
> end
>
>
>
>
> Yakir Gagnon
> The Queensland Brain Institute (Building #79)
> The University of Queensland
> Brisbane QLD 4072
> Australia
>
> cell +61 (0)424 393 332
> work +61 (0)733 654 089
>
> On Fri, Aug 7, 2015 at 1:49 PM, Yakir Gagnon <12.ya...@gmail.com> wrote:
>
>> Thanks again Tim!!!
>>
>> I looked into your code and will try something like the following:julia
>> write(stream, "P6\n") write(stream, "$width $height\n$mx\n")
>> write(stream,img)
>> where mx is the maximum value of the type used (e.g. 255 for UInt8).
>>
>> Cool about the splits, it makes sense (maybe more specific smaller parts
>> of Images.jl will become more complex/functional/specialized).
>>
>>
>>
>> Yakir Gagnon
>> The Queensland Brain Institute (Building #79)
>> The University of Queensland
>> Brisbane QLD 4072
>> Australia
>>
>> cell +61 (0)424 393 332
>> work +61 (0)733 654 089
>>
>> On Fri, Aug 7, 2015 at 1:32 PM, Tim Holy <tim.h...@gmail.com> wrote:
>>
>>> `write`, although you'll have to encode the dimensions of the image if
>>> you
>>> want to be able to read it back in.
>>>
>>> FYI some of Images' functionality seems to be in the process of getting
>>> split
>>> out to smaller packages, see https://github.com/JuliaIO
>>>
>>> --Tim
>>>
>>> On Thursday, August 06, 2015 05:27:51 PM Yakir Gagnon wrote:
>>> > I love and use Tim’s amazing Images.jl package. But, sometimes I
>>> generate
>>> > some data which results in an image. I then just want to save that
>>> image to
>>> > disk (or pipe it to imagemagick or something). I know I can include
>>> Images
>>> > and imwrite it to disk. But to load Images seems redundant just for one
>>> > function, and when I use more than one processes (julia -p auto) it
>>> really
>>> > slows down the startup.
>>> >
>>> > Is there a simple (if ugly) way to save a 2D matrix of say UInt8 (or
>>> any
>>> > other sensible type) that included in Base?
>>> >
>>> > Thanks!
>>> >
>>>
>>>
>>
>
