![]() While it is perfectly fine to reseed the generator each time you start up MATLAB, or before you run some kind of large calculation involving random numbers, it is actually not a good idea to reseed the generator too frequently within a session, because this can affect the statistical properties of your random numbers. Choosing a seed based on the current time does not improve the statistical properties of the values you'll get from rand, randi, and randn, and does not make them "more random" in any real sense. For most purposes, though, it is not necessary to use 'shuffle' at all. ![]() ![]() You might think that it's a good idea, or even necessary, to use it to get "true" randomness in MATLAB. 'shuffle' is a very easy way to reseed the random number generator. rng gives you an easy way to do that, by creating a seed based on the current time. One simple way to avoid repeating the same random numbers in a new MATLAB session is to choose a different seed for the random number generator. So when it's necessary to combine calculations done in two or more MATLAB sessions as if they were statistically independent, you cannot use the default generator settings. Obviously, calculations that use the same "random" numbers cannot be thought of as statistically independent. But as mentioned above, each time you restart MATLAB those functions are reset and return the same sequences of numbers. Non-RepeatabilityĮach time you call rand, randi, or randn, they draw a new value from their shared random number generator, and successive values can be treated as statistically independent. For now, it serves as a way to see what generator rand, randi, and randn are currently using. You can go check out the most common household appliances and the average watt hour draw to figure out which generator makes the most sense for you.You'll see in more detail below how to use the above output, including the State field, to control and change how MATLAB generates random numbers. Looking for more information on solar generators? Read our most in-depth solar generator buyer's guide ever written!īelow you will find a link to the solar calculator discussed at the end of the video. Battery Recharge Rate (From Panels or Outlet) = Battery size in watt hours / Total wattage input #2. Battery Bank Usage Time or "Run Time" = Battery size in watt hours / Load size in watts (Keep in mind the same logic applies to bigger off-grid battery banks as well).Īgain, to recap the video, these two off-grid solar sizing equations are: #1. The video explains the exact calculations you need to know in order to figure out the answers to the two questions above. How long will this solar generator last me? ![]() How long will it take to recharge this solar generator from the sun? The 2 most common off-grid solar questions we get asked are: Once you understand these two solar sizing equations, you will know how to choose the best solar generator for your needs. The video below explains the two most important solar sizing equations you need to know when shopping for ANY solar generator / off-grid (battery based) solar kit. Wondering how long a solar generator / solar battery will last in hours? Or how long it will take to charge a solar generator / solar battery bank from solar panels? Open Mon-Thurs: 10am-6pm & Friday's 10:30am-5pm Eastern
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |