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Storing Random Numbers to Variables to Calculate Percent of Change
I have a random number generator with a range from 800,000 to 900,000 linked to a text layer and it changes every second. I want to know is there a way of storing and holding previous values to a variable? Example: Lets say at second 1 the value of the text layer is 800,000 and on second 2 the value changes to 900,000. I want to store the first seconds value to a variable so I can calculate the percent of change.
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2 Replies
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Expressions have no memory, so variables don’t survive from one frame to the next. As a workaround, by manipulating the random number seed, you can recalculate the previous random number and use that to get the difference between the current and previous values. Something like this:
period = 1; // duration of each random number
seed = Math.floor(time/period);
seedRandom(seed,true);
nCur = random (800000,900000);
seedRandom(seed-1,true);
nPrev = random (800000,900000);
diff = nCur – nPrevDan
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Thank you will give this a try.
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