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Demosthenis Kasastogiannis about 5 hours ago
Edited: Demosthenis Kasastogiannis about 2 hours ago
Dear All,
Kindly ask for your assistant, I am trying to generate a time series with approx 500 data with the following parameters
1)values between min=0 max=1500
2) 0-100 range 50% of total data, 101-200 25% of total data etc
3) x/x+1 data should be +/-10% at 20% of data, x/x+1 should be between +/-10% - +/-20 at 15% of total data etc
Any ideas will be highly appreciated
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Edited: John D'Errico 8 minutes ago
What does this mean:
3) x/x+1 data should be +/-10% at 20% of data, x/x+1 should be between +/-10% - +/-20 at 15% of total data etc
does it say something about the ratio of consecutive terms? And what exactly does it say? I'm sorry, but that line is highly confusing.
Demosthenis Kasastogiannis about 1 hour ago
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Edited: Demosthenis Kasastogiannis about 1 hour ago
Apologies for the poor description...
Concerning the third parameter let me provide an example.
100,120,135..... the percentage difference if 100 and 120 is 20% (100x 1,2) while the percentage difference of 120 and 135 is 12,5%. As such i would like to determine the number of % differences within the generated data series as let's say 0%-10% differences at 20% of the entire data (is 500*20% = 100 data), 10%-20% difference at 15% of the entire data (500*15% = 75 data) etc. Hope it is more clear now. As i do want to generate consecutive data with 50% and 60% differences, it will be usefull if the generated data of ranges (0-100, 101 -200, 201-300 etc) are not continuously ie 100,275,510 etc
Many thanks!!!
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Answers (1)
Amith 32 minutes ago
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Hi Demosthenis,
I understand that you want to generate random numbers based on a few rules/parameters.
The first and second conditions can be met using the `randi` function. For instance, you can generate 50% of the total data size (i.e., 500 numbers) within the range of 0-100. The next 20% of the data can be in the range of 101-200, while the remaining numbers can fall within the range of 201-1500. For example, to generate the first 100 numbers in the range of 0-100, you can use:
r = randi([0 100],1,100)
However, the third condition is unclear and somewhat confusing. It would be helpful if you could provide more details or elaborate further on it.
Hope this helps!
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Demosthenis Kasastogiannis about 1 hour ago
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Edited: Demosthenis Kasastogiannis about 1 hour ago
Thank you very much Amith!! It is Highly appreciated
Concerning the third parameter let me provide an example.
100,120,135..... the percentage difference if 100 and 120 is 20% (100x 1,2) while the percentage difference of 120 and 135 is 12,5%. As such i would like to determine the number of % differences within the generated data series as let's say 0%-10% differences at 20% of the entire data (is 500*20% = 100 data), 10%-20% difference at 15% of the entire data (500*15% = 75 data) etc. Hope it is more clear now. As i do want to generate consecutive data with 50% and 60% differences, it will be usefull if the generated data of ranges (0-100, 101 -200, 201-300 etc) are not continuously ie 100,275,510 etc
Many thanks!!!
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- random number generator
- discrete distribution
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