Creating Bins in a Histogram
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I have a data set with the first column being the years and the second column being the distances. I need to create a histogram that bins how many of these distances occur during the same year, and then occurring every 10 years. (For example, 1880-1890 0, 1890-1900 1, 1900-1910 1).
I have attached the text file.
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Star Strider
2015년 10월 12일
You have one year recorded for each distance, so do the histogram on the years. This doesn’t account for the distances (I’m not exactly certain how to fit them into a histogram by year in the absence of plot3, if you want to somehow include them), but will plot the histogram of the discoveries by year and decade.
The code:
fidi = fopen('jgillis16 oo20copy.txt', 'rt');
Dc = textscan(fidi, '%f%f', 'CollectOutput',1, 'TreatAsEmpty','~');
fclose(fidi);
D = cell2mat(Dc);
years = D(:,1);
distances = D(:,2);
yrbin = [min(years):max(years)]-0.5;
dcbin = 10*[floor(min(years)/10) : 1 : floor(max(years)/10)]+5;
figure(1)
subplot(2,1,1)
hist(years, yrbin)
grid
subplot(2,1,2)
hist(years, dcbin)
grid
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Image Analyst
2015년 10월 12일
The data you posted really doesn't have enough observations per decade to make a good histogram. There are just a handful per decade and usually only one or 2 per year. Nonetheless, you can use hist3() in the Stats toolbox to give counts per decade, and then per year in each decade.
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