CODEWITHSUNDEEP
matlabplot
Karol Borkowski
Karol Borkowski

Reputation: 742

how to plot a graph with the oryginal order of y-axis values?

I have some matrix with n rows and 2 columns. I want to plot the values from the second column as a function of those from the first one. The problem is that the values from the first column begins with some greater values which decrease, e.g. 5 4 3 2 1 Therefore, when I plot the function the graph is automatically flipped i the way that 1 is on the left. How to avoid this flipping? I know that I could invert the graph, but I'd like to have an universal solution, which works also for datasets where the column starts with smaller numbers.

Upvotes: 0

Views: 36

Answers (1)

codeaviator
codeaviator

Reputation: 2565

After plotting the data of your matrix M, add the following condition:

if(~issorted(M(:, 1)))
    set(gca, 'Xdir', 'reverse');
end

The function issorted will check if the first column is sorted in ascending order, and if it's not, then the x-axis of your plot will be reversed.

Upvotes: 2

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