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Decreasing scale on graphs

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David on 11 Mar 2011
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);

Answers (3)

Jan on 11 Mar 2011
Can you change the values of the time?
plot(1 - Times, TDCall);
Perhaps FLIPLR is wanted to reorder TDCall?

Walter Roberson
Walter Roberson on 11 Mar 2011
Okay, this is going to be a hack, but it'll get the job done for now:
set(gca, 'XTickLabel', -get(gca, 'XTick'))
Tested, and it works.
Walter Roberson
Walter Roberson on 12 Mar 2011
True, and surmountable using known methods.
Good enough for someone who was falling asleep at the time.
David on 13 Mar 2011
Thanks for your help.

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Ned Gulley
Ned Gulley on 11 Mar 2011
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