Plotting with categorical data

Plotting a bar chart with a categorical vector on the x-axis and a double vector on the y-axis.

The resulting bar chart is alphabetically arranged (by default) by the categorical vector on the x-axis.

How does one arrange the bar chart with highest to lowest values from the double vector on the y-axis ?

R, Shaun

Answer 1

[Johannes Hougaard]

Based on the help for the bar plot function with categoricals the solution is possibly to use the reordercats function.

I found this to be the way to do it

workdays    = {'monday','tuesday','wednesday','thursday','friday','saturday','sunday'};
workhours   = [8.0 4.5 8.2 7.4 10.2 3.1 0.6];
[~,arr]     = sort(workhours,'descend');
X = reordercats(categorical(workdays),workdays(arr));
figure;
bar(X,workhours);

[Shaun Ramsumar]

Thank you Johannes,

Works, but I had to convert the second argument of reordercats with cellstr.

Answer 2

[Walter Roberson]

[sy, syidx] = sort(y, 'descend');
cc = categorical(1:length(y), 1:length(y), string(x(syidx)));
plot(cc, sy);