How to render a bar chart in descending order with x-axis label on each bar?

I just cannot fathom this out and wondered whether anybody could help before my PC exits the window!

I am trying to plot a bar chart with the values displayed in descending order and each bar has its label shown on the x-axis and nothing I've tried works.

My current code is this: -

clc;
clear;

T = readtable('data/car_insurance_claim_cleanse.csv');

target = table2array(T(:,26));

delCols = [1 3 24 26];
T(:,delCols) = [];

[idx, scores] = fscchi2(T, target);

varnames = T.Properties.VariableNames(idx);
labels = escapeLodash(varnames);

bar(labels, scores(idx));
xlabel('Rank');
ylabel('Score');

and this produces a bar chart like this: -

however as you can see the sequence of the bars is not in descending order?

If I change my code to: -

clc;
clear;

T = readtable('data/car_insurance_claim_cleanse.csv');

target = table2array(T(:,26));

delCols = [1 3 24 26];
T(:,delCols) = [];

[idx, scores] = fscchi2(T, target);

varnames = T.Properties.VariableNames(idx);
labels = escapeLodash(varnames);

bar(scores(idx));
xlabel('Rank');
ylabel('Score');

xticklabels(labels);

I get the columns in the correct sequence however my labels are missing from each bar?

escapeLodash just escapes the underscores for display purposes, but here's the code anyway: -

function r = escapeLodash(labels)
    work1=cellstr(labels);
    work2 = strrep(work1, '_', '\_');
    r = nominal(work2);
end

Any ideas?

[Scott MacKenzie]

It might help if you provide the complete code that generated these charts.

[Andrew Holloway-Breward]

My apologies I thought summarising the bar chart bit was sufficient, but you're right.

I've updated the code as requested.

Answer 1

[Andrew Holloway-Breward]

Finally got there, this reordercats function is really confusing and totally intuitive!

clc;
clear;

T = readtable('data/car_insurance_claim_cleanse.csv');

target = table2array(T(:,26));

delCols = [1 3 24 26];
T(:,delCols) = [];

[idx, scores] = fscchi2(T, target);

varnames = T.Properties.VariableNames(idx);
labels = escapeLodash(varnames);

labels = reordercats(labels, string(labels));
bar(labels, scores(idx));
xlabel('Rank');
ylabel('Score');

this produces the chart as follows: -