deprecate ColorizedArray in favor of MappedArray

[johnnychen94]

MappedArray provides a more generic version of ColorizedArray so I believe it is good to not maintain ColorizedArray anymore.

LazyArray also provides similar operation; LazyArray(@~ @. I * indexed_img).

closes JuliaImages/juliaimages.github.io#132

[codecov]

Codecov Report

Merging #927 (17ab0e1) into master (cc578b0) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #927      +/-   ##
==========================================
+ Coverage   86.20%   86.24%   +0.04%     
==========================================
  Files           9        9              
  Lines        1022     1025       +3     
==========================================
+ Hits          881      884       +3     
  Misses        141      141              

Impacted Files	Coverage Δ
src/labeledarrays.jl	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update cc578b0...17ab0e1. Read the comment docs.

[timholy]

The one thing I worry about is ImageView. If I remember correctly, hover-over-pixel for a ColorizedArray displays the underlying value, not the mapped value. But we can do this if you think it's better.

[johnnychen94]

If I remember correctly, hover-over-pixel for a ColorizedArray displays the underlying value, not the mapped value.

I see. It does give some visual aids, but this doesn't sound like what ColorizedArray is designed for. Probably making hover-over-pixel behavior customizable is a better choice. I don't use ImageView but I guess it's similar to JuliaImages/ImageView.jl#228.

[timholy]

this doesn't sound like what ColorizedArray is designed for

Not sure I really remember, but I think that is its main purpose. But you're right there are other ways to solve this. If this just seems too marginal we can do it, I was just thinking that there are many cases where array content and array labeling are two things that are useful to be able to link without losing track of either one.

[johnnychen94]

I get your point here. Given that you are probably the only user of this, I'll leave this to you to decide whether we should do it or not.

BTW, I searched the whole GitHub and couldn't find any other place except Images.jl that contains ColorizedArray 😨