How to add Mean and Median to a Histogram
조회 수: 201 (최근 30일)
이전 댓글 표시
I have created a histogram from the array labelled DistanceMiles using the command histogram(DistanceMiles) . I need to find the mean and indicate it on the plot with a red "x", and find the median, and indicate that with a black "o"
댓글 수: 3
Rik
2021년 4월 11일
Why did you delete the question? Now the answer doesn't make sense anymore. Please restore it.
답변 (1개)
Image Analyst
2021년 4월 11일
편집: Image Analyst
2021년 4월 11일
The original question, before @Michael Kuhlow deleted it for some reason, asked how to indicate mean and median on a graph of the histogram of some data. Mean with a red x, and median with a black o.
Michael, try this. Adapt as needed.
data = randn(100, 1) + 10;
h = histogram(data)
dataMean = mean(data(:))
dataMedian = median(data(:))
grid on;
hold on;
% Put up vertical lines there
xline(dataMean, 'Color', 'r', 'LineWidth', 2);
xline(dataMedian, 'Color', 'k', 'LineWidth', 2);
% Find bin centers
binCenters = (h.BinEdges(1:end-1) + h.BinEdges(2:end))/2;
% Put up red x on top of the bar
[~, index] = min(abs(dataMean - binCenters))
plot(binCenters(index), h.Values(index), 'rx', 'LineWidth', 3, 'MarkerSize', 20);
[~, index] = min(abs(dataMedian - binCenters))
plot(binCenters(index), h.Values(index), 'ko', 'LineWidth', 3, 'MarkerSize', 20);
댓글 수: 2
Juan Sebastian
2024년 1월 13일
편집: Juan Sebastian
2024년 1월 13일
How can I estimade the mode for the histogram? I know that it is necesarry to estimate this parameters for data grouped.
Image Analyst
2024년 1월 13일
@Juan Sebastian you can do
modeValue = mode(h.Values)
modeBin = h.BinEdges == modeValue
참고 항목
카테고리
Help Center 및 File Exchange에서 Histograms에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!