Change Xaxis values based on Xtick

Hi,

I have the following data plotted from Matlab. I am setting the Xtick and XtickLabels on my own but there is an uneven spacing between the data points. I was wondering if there is a way to make it such that the gap between the data points is not so large/small and is evenly spaced. I have attached a picture with an example.

UniqueFreq =

          2012        2015        2018        2020        2023        1882        1885        1900        1915        1918

    set(gca,'xtick',unique(UniqueFreq));
        hold on
        set(gca,'xticklabel',unique(UniqueFreq))
        hold on

    plot(DataArray{k,8},DataArray{k,9},'-o');

[the cyclist]

I don't see an attached picture.