Trying to use 6 different shades of gray on stacked bar

Hello,

I am trying to create a gray scaled stacked bar plot. I have set the bar.FaceColor = 'flat' and CData to different rgb triplet with identical element to get the gray scale legend(or gray(6)).

The issue is it is pretty hard to distinguish between the different stacks in the bar. Here you can see DataType and RunMutant and pretty similar and so is Mutant Gen and Coverage.

     H(1).CData = [0.6000    0.6000    0.6000]; %Run Seed Black
     H(2).CData =   [0.3333    0.3333   0.3333];% Coverage 
     H(3).CData =  [ 0.7500    0.7500    0.7500]; % DataType 
     H(4).CData =  [0 0 0]; %Mutant Gen 
     H(5).CData = [0.9000    0.9000    0.9000]; %Run Mutant
     H(6).CData =  [1 1 1];%white for  Diff.test

Also I cant set the facecolor value to hexadecimal values directly. Any help is appreciated?

I have also tried using the hatchfill to create legend but the quality is too low.

[Rik]

Have you tried 1/6 spacing of the colors as well? 6 is quite a lot to want to differentiate between such small elements.

[Sohil Shrestha]

I started with that but didnt help much in readability. Is there any other way to make it distinct. I could have used colors but the submission is grayscaled.

[Rik]

What do you mean with the quality of hatchfill being too low?

[Sohil Shrestha]

Matlab, by default,we can only use colors in bar plots. An alternate way is to use symbols .

I used the following code from Matlab File exchange: https://www.mathworks.com/matlabcentral/fileexchange/1736-hatched-fill-patterns?focused=6777497&tab=function

While it solves the problem, the quality of plot is simply too low to be used online as it use bitmap to plot.

[Rik]

I haven't used either, but it looks like this FEX submission suits your need a bit better.

[Sohil Shrestha]

This link you sent is an update to the one i have in my earlier comment. It too suffers from the same issue. I wish Mathworks would have this feature support in later release.

[Adam Danz]

I haven't looked at the FEX files but perhaps the approaches in this blog will be helpful.

https://blogs.mathworks.com/pick/2011/07/15/creating-hatched-patches/