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I'm trying to apply a rule-based approach to my data that considers both the positive or negative value and the value per se (from -66 to 77). I was able to apply a rule for negatives/positives (red and green, respectively), but how can I add the rule for symbol size considering the size of the number? (e.g., a value of 10 would have a bigger point symbol size than a value of 5).

What I did so far:

negative: "diff" < 0 (single red color)
positive: "diff" > 0 (single green color)
neutral: "diff" = 0 (single purple color)

I'm trying to do this for a point vector (I can't upload an image here; the server is bugged)

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  • What kind of vector data are we talking about?
    – Erik
    Commented Oct 13, 2022 at 13:00
  • Sorry, I'll edit with more information
    – hiperhiper
    Commented Oct 13, 2022 at 13:01
  • @Erik Ok, I added more info. Unfortunately, I cannot add a screenshot. StackExchange is not allowing me.
    – hiperhiper
    Commented Oct 13, 2022 at 13:07
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    Have you had a look at data-defined override?
    – Erik
    Commented Oct 13, 2022 at 13:09
  • I did not. How can I edit it on the size option to do what I'm asking? (i.e., bigger values = bigger symbol sizes)
    – hiperhiper
    Commented Oct 13, 2022 at 13:17

1 Answer 1

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Ok, after @Erik comment I got it pretty easy. All I had to do was to double click each of my point vector labels -> go to Size section -> click on the data defined override -> select diff (the column I'll be using for size labeling) and that's it.

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