MATLAB: How to set axis with different interval

axisintervalxaxis

I have data look like this !
x y
3 10
5 11
7 09
10 12
20 11
30 10
40 09
90 12
you see interval between x axiz values is not same, when i plot this, initial values are plotted very close to each other which doesnt look good.
I want each to put X axis values at same distance. how can i do that ?

Best Answer

One option is to change the scale of the x-axis: 
%      x    y
M = [ 3     10
      5     11
      7     09
     10     12
     20     11
     30     10
     40     09
     90     12];
figure
plot(M(:,1), M(:,2), '-p')
Ax = gca;
Ax.XTick = M(:,1);
Ax.XScale = 'log';
axis([2  100    8  13])
xlabel('x')
ylabel('y')
producing:
.
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