Histograms

Histograms Histograms - Start

2016-05-06 70K 70 0 0

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Jake Blanchard. Spring 2010. Uncertainty Analysis for Engineers. 1. Creating Histograms. Distribution functions are essentially histograms, so we should get some practice with histograms. We’ll use solar . ID: 307098 Download Presentation

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Histograms




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Slide1

Histograms

Jake BlanchardSpring 2010

Uncertainty Analysis for Engineers

1

Slide2

Creating Histograms

Distribution functions are essentially histograms, so we should get some practice with histogramsWe’ll use solar insolation as an exampleDaily insolation averaged over a monthData is for Madison, WIUnits are W-hr/m2

Uncertainty Analysis for Engineers

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Slide3

Small Set

Data on next slide is for January, years 1961-1966Divide results into binsCount instances in each binPlot, usually with bar chart

Uncertainty Analysis for Engineers

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Slide4

January Insolation – 1961-1966

YearInsolation (W-h/m2)1961185819621943196320031964193719651770

Uncertainty Analysis for Engineers

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Slide5

Categories

1700-1799 1 entry1800-1899 1 entry1900-1999 2 entries2000-2099 1 entry

Uncertainty Analysis for Engineers

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Slide6

Histogram for Full Data Set (Excel)

Uncertainty Analysis for Engineers

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Slide7

Excel

Go to Data/Data AnalysisThen pick Histogram

Uncertainty Analysis for Engineers

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Slide8

Matlab

data=xlsread('histograms.xlsx');hist(data(:,2), 30)

Uncertainty Analysis for Engineers

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Slide9

Matlab

What if we just want the month by month data?

Uncertainty Analysis for Engineers

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January

January June

Slide10

Script

z=find(data(:,1)==1);[N1,X1]=hist(data(z,2),10);z=find(data(:,1)==6);[N6,X6]=hist(data(z,2),10);bar(X1,N1)hold onbar(X6,N6)

Uncertainty Analysis for Engineers

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