basic imshow and working ppmwrite

[stefan-k]

ppmwrite now writes all channels to disk, not just the blue channel.
The imshow function is really very basic: It writes the image to disk and shows it using feh.

[JeffBezanson]

This is only "proper" depending on how your image is stored ;)
I was using pixels packed into int32s. But, I'm fine with switching to this convention.
Maybe ideally we'd have overloads for 3-d int8 arrays vs. 2-d int32 arrays.
As for feh, this stuff is not an official library yet, so it doesn't matter. Might as well take it.

[stefan-k]

Ah, now I understand why this wasn't working. I read an image using imread and then saved with ppmwrite which didn't work.
I'm about to implement some other basic functions, just to get a minimal image processing environment. I hope this is ok (I don't want to annoy you guys since you probably have more important stuff to do ;)).

[JeffBezanson]

Sounds great. Since it's in examples/, you can go nuts with it.
If you're planning to write particular matlab functions, could you label yourself as the author in the spreadsheet viral sent out?

[stefan-k]

Sure! But my functions will (for now) just cover basic functionality, nowhere near what the Matlab functions are capable of. Should I still label myself als author?

[JeffBezanson]

If you implement a subset of a matlab function, yes. Personally I'd prefer most of those functions to be simpler, and either be split into multiple functions or just have fewer features period. I hate seeing y = foo(x, z); and wondering which of 100 possible things it's doing :)
We're not a matlab clone, so we only follow matlab names and behaviors where it obviously makes sense, like fft(x).