How to plot the bar graph in descending order?

I want to make this graph from largest to smallest. How can I do this?

Airpollution = readtable ('Location vs No2.xlsx');
x = categorical(Airpollution{:,1});
y = Airpollution{:,2};
bar(x,y)
xlabel('Cities');
ylabel('Concentration of No2');
title(['Cities in Andha Pradesh, India vs Maximum concentration of No2 (2010)']);

Answer 1

[Image Analyst]

Try

Airpollution = readtable ('Location vs No2.xlsx');
x = categorical(Airpollution{:,1});
y = Airpollution{:,2};
% Sort by decreasing y value.
[sortedY, sortOrder] = sort(y, 'descend');
% You must sort x the same way so you don't lose correspondences.
sortedX = x(sortOrder);
% Plot the bar chart from largest to smallest.
bar(sortedX, sortedY)
xlabel('Cities');
ylabel('Concentration of NO_2');
title(['Cities in Andha Pradesh, India vs Maximum concentration of No2 (2010)']);

If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

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[Nannthini]

I coundn't run the code. It shows error in line 6.

[Image Analyst]

Sorry, I couldn't test the code before posting it because you forgot to attach your data. Probably because you didn't read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

Use descend instead of decrease

[sortedY, sortOrder] = sort(y, 'descend');

[Nannthini]

I am able to run the code, but I continue to receive the same results that I have already shared.. Here, I've attached my data here. I apologise for not attaching my data earlier.

Code:

Airpollution = readtable ('Location Vs No2 (2010).xlsx');

x = categorical(Airpollution{:,1});

y = Airpollution{:,2};

% Sort by decreasing y value.

[sortedY, sortOrder] = sort(y, 'descend');

% You must sort x the same way so you don't lose correspondences.

sortedX = x(sortOrder);

% Plot the bar chart from largest to smallest.

bar(sortedX, sortedY)

xlabel('Cities');

ylabel('Concentration of NO_2');

title(['Cities in Andha Pradesh, India vs Maximum concentration of No2 (2010)']);

Output:

[Image Analyst]

Looks like the problem was casting x to categorical. Try it this way (and please avoid Ramagundam!)

airPollution = readtable ('Location Vs No2 (2010).xlsx')
x = airPollution{:,1};
y = airPollution{:,2};
subplot(2, 1, 1);
bar(y)
xticklabels(x)
grid on;
xlabel('Cities');
ylabel('Concentration of NO_2');
title('Cities in Andha Pradesh, India vs Maximum concentration of NO_2 (2010)');
fontsize(gcf, 15, 'points')
% Sort by decreasing y value.
[sortedY, sortOrder] = sort(y, 'descend');
% You must sort x the same way so you don't lose correspondences.
sortedX = x(sortOrder);
% Plot the ba chart from largest to smallest.
subplot(2, 1, 2);
bar(sortedY)
xticklabels(sortedX)
grid on;
xlabel('Cities');
ylabel('Concentration of NO_2');
title('Cities in Andha Pradesh, India vs Maximum concentration of NO_2 (2010)');
fontsize(gcf, 15, 'points')
g = gcf;
g.WindowState = "maximized"

[Nannthini]

Thank you so much for helping me.