Preheat oven 400°F.Spread chopped pecans on a small cookie sheet and toast 5-7 minutes until toasted. Make sure to watch them closely so they don't burn.
Wash, peel, and grate your carrots using a food processor with a grater disc, a mandoline, or a hand grater. Use a fine grater if available.
In a large bowl, combine grated carrots, pineapple, yogurt, sugar, raisins, and pecans. Add a splash of pineapple juice if desired. Mix until fully incorporated.
Chill an hour up to overnight then serve.
Store in an airtight container in the refrigerator for up to 4 days.