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 agricolae: Statistical Procedures for Agricultural Research
 intervals.freq: Class intervals
Class intervals
Description
List class intervals.
Usage
1 
Arguments
x 
class graph.freq, histogram or numeric 
Value
classes 
matrix numeric 
Author(s)
Felipe de Mendiburu
See Also
polygon.freq
, table.freq
, stat.freq
,
graph.freq
, sturges.freq
, join.freq
,
ogive.freq
, normal.freq
Examples
1 2 3 4 5 6 7 8 9 10  library(agricolae)
# example 1
data(growth)
h<hist(growth$height,plot=FALSE)
intervals.freq(h)
# example 2
x<seq(10,40,5)
y<c(2,6,8,7,3,4)
intervals.freq(x)
histogram < graph.freq(x,counts=y)

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 agricolaepackage: Statistical Procedures for Agricultural Research
 AMMI: AMMI Analysis
 AMMI.contour: AMMI contour
 audpc: Calculating the absolute or relative value of the AUDPC
 audps: The Area Under the Disease Progress Stairs
 bar.err: Plotting the standard error or standard deviance of a...
 bar.group: Plotting the multiple comparison of means
 BIB.test: Finding the Variance Analysis of the Balanced Incomplete...
 carolina: North Carolina Designs I, II and III
 Chz2006: Data amendment Carhuaz 2006
 CIC: Data for late blight of potatoes
 clay: Data of Ralstonia population in clay soil
 ComasOxapampa: Data AUDPC Comas  Oxapampa
 consensus: consensus of clusters
 corn: Data of corn
 correl: Correlation Coefficient
 correlation: Correlation analysis. Methods of Pearson, Spearman, Kendall...
 cotton: Data of cotton
 cv.model: Coefficient of the experiment variation
 cv.similarity: Coefficient of the similarity matrix variation
 DAU.test: Finding the Variance Analysis of the Augmented block Design
 DC: Data for the analysis of carolina genetic design
 delete.na: Omitting the rows or columns with missing observations of a...
 design.ab: Design of experiments for a factorial
 design.alpha: Alpha design type (0,1)
 design.bib: Randomized Balanced Incomplete Block Designs. BIB
 design.crd: Completely Randomized Design
 design.cyclic: Cyclic designs
 design.dau: Augmented block design
 design.graeco: Graeco  latin square design
 design.lattice: Lattice designs
 design.lsd: Latin Square Design
 design.rcbd: Randomized Complete Block Design
 design.split: Split Plot Design
 design.strip: Strip Plot Design
 diffograph: Plotting the multiple comparison of means
 disease: Data evaluation of the disease overtime
 duncan.test: Duncan's new multiple range test
 durbin.test: Durbin test and multiple comparison of treatments
 friedman: Friedman test and multiple comparison of treatments
 frijol: Data of frijol
 genxenv: Data of potato yield in a different environment
 Glycoalkaloids: Data Glycoalkaloids
 graph.freq: Histogram
 grass: Data for Friedman test
 greenhouse: Data in greenhouse
 growth: Data growth of trees
 haynes: Data of AUDPC for nonparametrical stability analysis
 Hco2006: Data amendment Huanuco 2006
 hcut: Cut tree of consensus
 heterosis: Data of potato, Heterosis
 hgroups: groups of hclust
 HSD.test: Multiple comparisons: Tukey
 huasahuasi: Data: Rainfall thresholds as support for timing fungicide...
 indexAMMI: AMMI index and yield stability
 index.bio: Biodiversity Index
 index.smith: Uniformity soil. Smith's Index of Soil Heterogeneity
 intervals.freq: Class intervals
 join.freq: Join class for histogram
 kendall: Correlation of Kendall
 kruskal: Kruskal Wallis test and multiple comparison of treatments.
 kurtosis: Finding the Kurtosis coefficient
 lastC: Setting the last character of a chain
 lateblight: LATEBLIGHT  Simulator for potato late blight Version LB2004
 lineXtester: Line x Tester Analysis
 LSD.test: Multiple comparisons, "Least significant difference" and...
 LxT: Data Line by tester
 markers: Data of molecular markers
 melon: Data of yield of melon in a Latin square experiment
 montecarlo: Random generation by Montecarlo
 natives: Data of native potato
 nonadditivity: Nonadditivity model test
 normal.freq: Normal curve on the histogram
 ogive.freq: Plotting the ogive from a histogram
 order.group: Ordering the treatments according to the multiple comparison
 orderPvalue: Grouping the treatments averages in a comparison with a...
 order.stat: Grouping the treatments averages in a comparison with a...
 pamCIP: Data Potato Wild
 paracsho: Data of Paracsho biodiversity
 path.analysis: Path Analysis
 PBIB.test: Analysis of the Partially Balanced Incomplete Block Design
 plotAMMI: PLOT AMMI
 plot.graph.freq: Histogram
 plots: Data for an analysis in splitplot
 plrv: Data clones from the PLRV population
 polygon.freq: The polygon of frequency on the histogram
 potato: Data of cutting
 ralstonia: Data of assessment of the population in the soil...
 reg.homog: Homologation of regressions
 REGW.test: Ryan, Einot and Gabriel and Welsch multiple range test
 resampling.cv: Resampling to find the optimal number of markers
 resampling.model: Resampling for linear models
 rice: Data of Grain yield of rice variety IR8
 RioChillon: Data and analysis Mother and baby trials
 scheffe.test: Multiple comparisons, scheffe
 similarity: Matrix of similarity in binary data
 simulation.model: Simulation of the linear model under normality
 sinRepAmmi: Data for AMMI without repetition
 skewness: Finding the skewness coefficient
 SNK.test: StudentNewmanKeuls (SNK)
 soil: Data of soil analysis for 13 localities
 sp.plot: SplipPlot analysis
 ssp.plot: SplitsplitPlot analysis
 stability.nonpar: Nonparametric stability analysis
 stability.par: Stability analysis. SHUKLA'S STABILITY VARIANCE AND KANG'S
 stat.freq: Descriptive measures of grouped data
 strip.plot: StripPlot analysis
 sturges.freq: Class intervals for a histogram, the rule of Sturges
 summary.graph.freq: frequency Table of a Histogram
 sweetpotato: Data of sweetpotato yield
 table.freq: frequency Table of a Histogram
 tapply.stat: Statistics of data grouped by factors
 VanderWarden: Multiple comparisons. The van der Waerden (Normal Scores)
 vark: Variance K, ties, Kendall
 waller: Computations of Bayesian tvalues for multiple comparisons
 waller.test: Multiple comparisons, WallerDuncan
 wilt: Data of Bacterial Wilt (AUDPC) and soil
 yacon: Data Yacon
 zigzag: order plot in serpentine