Problem with X/Ylim and X/YTick in Matlab figures

Hi,

I'm trying to plot a figure in Matlab, but when I define XLim and XTick (in different ways, e.g., ax.XLim, gca, XLim([0 30]), etc.,...), my plot end up with different axes limit and tick. This is the piece of code that I'm using now:

figure()

plot(f, S_end, 'b:');

% annotate and format

legend('Empirical','Location','South');

ax = gca;

ax.YScale = 'log';

ax.XScale = 'log';

xlabel('Spatial Frequency (cpd)'); ylabel('Contrast Sensitivity (1/C)')

ax.XLim = [0 30];

ax.YLim = [0 80];

ax.XTick = [1 2 5 10 20 30];

ax.YTick = [0 10 20 30 50 60 70];

The output that I get is attached.

Could you please help me how to solve this problem?

[Adam]

You haven't told us either what the problem is or what the expected output is.

[Mahtab Farahbakhsh]

I have attached the output as a .png file. Can you find that? I've mentioned that the problem is my plot ends up with different xtick and xlim than the ones I defined for it (e.g., I define XLim([0 30]) , but the plot ends up with XLim([2 30])).

Hope that makes my problem clear!

Answer 1

[Walter Roberson]

You cannot use 0 as a limit on a log scale plot, as 0 would be infinitely far along the axis.

[Mahtab Farahbakhsh]

WOW! Basic math that I forgot to think about! Thank you so much!!!