I have to plot a graph where +1 and -1 are located at same point on x axis. How can I do that?

I want the scale on X axis to be like this

and the values of x,y are as follows (-0.6,0.9) (-0.7,0.8) (-.95,0.6) (0.6,0.5) (0.7,0.4) (1,0.3) (0.8,0.4) (0.6,0.5)(0,0.5)(-0.6,0.6) (-0.7,0.8) (-0.6,0.9)

[Image Analyst]

That seems like a very deceptive and misleading way to set up your x-axis that's sure to confuse whomever you want to show it to. Why do you want to do that?

[anoohya]

I was actually told to do it that way. This is a part of research project where they want to represent the power factor on x axis. Is there any way that i could do it? I tried doing it in excel but i'm facing many problems and m not able to get what i want at the end.

Everything else is easy in matlab except that im stuck with this. Is there any way to get this?

Answer 1

[A Jenkins]

Here is how I would do it. Your proposed tick values don't work perfectly with your data, but you can adjust it.

% given data
data_values = [ -0.6,0.9; -0.7,0.8; -.95,0.6; 0.6,0.5; 0.7,0.4; ...
    1,0.3; 0.8,0.4; 0.6,0.5; 0,0.5; -0.6,0.6; -0.7,0.8; -0.6,0.9];

% put your desired ticks here
xticklables=[-.6,-.65,-.7,-.75,-.8,-.85,-.9,-.95,1,.95,.9,.85,.80];

% transform ticks to new scale
xtick=-xticklables;
idx=xtick<0;
xtick(idx)=xtick(idx)+2;

% transform the data to the new scale
data_values(:,1)=-data_values(:,1);
idx=data_values(:,1)<0;
data_values(idx)=data_values(idx)+2;

% plot and adjust labels
scatter(data_values(:,1), data_values(:,2));
xlim([min(xtick), max(xtick)]);
set(gca,'xtick',xtick);
set(gca,'xticklabel',xticklables);

[anoohya]

That helped. Thanks a lot. Is there any way that i could join the points in the order they're written? I don't think that can be done using a scatter plot. Is there any other alternative?

[A Jenkins]

Just replace scatter() with plot(). Or try any of the other plotting functions .