vertical histogram base

[Cvikli]

A raw VERY simple Vertical Unicode Histrogram plotting.

I see there are a lot of work needs to be done here. If someone could be a help for me, that would be much appreciated.

[codecov-commenter]

Codecov Report

Merging #221 (573aafd) into master (fecf19a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #221   +/-   ##
=======================================
  Coverage   99.91%   99.92%           
=======================================
  Files          25       26    +1     
  Lines        1211     1253   +42     
=======================================
+ Hits         1210     1252   +42     
  Misses          1        1           

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

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[t-bltg]

Thanks for this contribution.

I see there are a lot of work needs to be done here. If someone could be a help for me, that would be much appreciated.

As a maintainer of this repository, I can push in your fork, so I will make some changes now. Don't forget to synchronize you fork accordingly using git fetch && git pull before you need to make changes and push new commits.

Also note the README.md is auto-generated, you must edit docs/generate_docs.jl instead and follow https://github.com/JuliaPlots/UnicodePlots.jl#documentation-update (you can omit the bash gen_imgs.sh bit).

[t-bltg]

I see now that you are not using a canvas to draw vertical histograms. This won't work, and we request you to follow the internal structure of UnicodePlots.jl. In verticalhistogram you'd need to create a Plot object containing a canvas (see https://github.com/JuliaPlots/UnicodePlots.jl#low-level-interface) on which you can draw things. Calling show or display on that Plot object will print it to the screen (or a file), and this is what is missing for the tests to work. If you cannot reuse one of the existing canvases you'd have to create your own, but I don't think this is needed. I think you can hack src/graphics/bargraphics.jl to support a new function addcol! to add a column (vertical bar) to the canvas.

[Cvikli]

Hey, I checked what you are saying and maybe I could make a very basic implementation.
But sadly I won't have a single hour to finish it for 2 weeks. But after that I will try to come back!

[t-bltg]

Superseded by #250.