MATLAB - 2D Plotting
You have data vector
data = [1,2,2,3,3,3,4,4,4,4]. How do you create a bar plot showing the count of each unique value?You have data vector data = [1,2,2,3,3,3,4,4,4,4]. How do you create a bar plot showing the count of each unique value?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Count frequencies of unique values
histcounts(data)returns counts of data in bins, which can be used to plot counts.Step 2: Plot counts as bar heights
Usingbar(histcounts(data))creates bars representing counts of each unique value.Final Answer:
Use bar(histcounts(data)) -> Option AQuick Check:
Count unique values with histcounts, plot with bar [OK]
Quick Trick: Use histcounts() to get counts, then bar() to plot [OK]
Common Mistakes:
- Using bar(unique(data)) which plots values, not counts
- Using histogram() which plots frequency bins automatically
- Using bar(data) which plots raw data values
Master "2D Plotting" in MATLAB
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