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Expressions that count
I have a job where I need to count between various integers both whole and with decimal places that start all over the place i.e. 135 – 166 or 4.2 – 8.3 etc.. As I suspect I might have to retime these quickly I was wondering if there was an expression that would enable me to do this, perhaps over the length of a layer or using a defined start and finish time within the comp?
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5 Replies
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The easiest way is probably to add a slider control to your text layer. Add a keyframe with the starting number as the value, and another keyframe with the ending value. Then it’s as simple as adding an expression to the text layer’s source text that links it to the value of the slider. As the slider value shifts from the start value to the end value, your text layer will display the value.
If you need whole numbers, just add “Math.floor(” before the expression, and be sure to close the parentheses. This will round the number down. -
That’s brilliant, thanks. Is it possible to specify the number of decimal places?
Once again – thanks!
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I think this should work – inside the parentheses for the Math.floor() portion take your value times 10, 100, 1000, one 0 for each decimal place, then divide the whole thing by the same number.
Math.floor(effect("Slider Control")("Slider")*1000) / 1000 -
I think you can also use .toFixed()
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Thanks very much for that – you’ve saved me bags of time on this job. Much respect 🙂
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