recalculation with different rsult respect to previous one

Dear all.

Can any one help me about my problem in Mathlab code as following? I have obtained a result and drawn a plot . But, the problem is once I want to do, once again, THE SAME calculations with THE SAME INPUT PARAMETERS, I get DIFFERENT plot. It is very strange and confusing.

Answer 1

[Walter Roberson]

This can happen for a couple of different reasons:

• if the calculations involve random numbers. The random number use might not always be obvious: for example although it is not immediately obvious, kmeans() by default uses random initialization of cluster locations;
• if you have some kind of accumulation of results and your code forgets to explicitly initialize the variables;
• if your code relies upon expanding an array and your code does not remember to initialize the array. For example if you have code like A(end+1) = calculation; B = sum(A); then if the code does not remember to clear / truncate the array A then the second time you would be calculating based on results stored the first time through.

[Saeid Pourmasoud]

Thank you for your answer. But we do not have any random numbers in our calculations. In brief, we have some parameters with a clear value. By such parameters we draw a plot, and the second result is different with the previous one!!!

If you want I can sen the codes and two different plots.

[Walter Roberson]

You can post the code if you feel comfortable doing so.

[Saeid Pourmasoud]

I send you the code throu your private email address.

[Walter Roberson]

You did not send thue() or fib_bin() or rt_coefficient_te() or rt_coefficient_tm()

Saying

in one category you can put A=0; alpha=1.08, beta=1.86

in another category you can put A=0.2, alpha=1.01, beta=1.95

does not give me enough information about how the code should be run, or what should be plotted, or what I should be looking for when you say the second run returns different results.

[Saeid Pourmasoud]

Thank you so much. I solved the problem myself.

With the best wishes