Decreasing scale on graphs

I wish to graph Time Decay for an option price from 1 year to almost 1 day. The graph generated by MATLAB scales from 0 to 1 and I need 1 to 0.

Interval = 1/252;
Times = 1:-Interval:Interval;
[TDCall TDPut] = blsdelta(S0,K,r,Times,Sigma);
plot(Times,TDCall);

Answer 1

[Jan]

Can you change the values of the time?

plot(1 - Times, TDCall);

Perhaps FLIPLR is wanted to reorder TDCall?

[David]

Thanks for your help.

Answer 2

[Walter Roberson]

Okay, this is going to be a hack, but it'll get the job done for now:

plot(-Times,TDcall);
set(gca, 'XTickLabel', -get(gca, 'XTick'))

Tested, and it works.

[Jan]

But it fails at zooming.

[Walter Roberson]

True, and surmountable using known methods.

Good enough for someone who was falling asleep at the time.

[David]

Thanks for your help.

Answer 3

[Ned Gulley]

Is this what you're looking for?

plot(Times,TDCall)  
set(gca,'XDir','reverse')

[David]

Thanks for your help.