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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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- agricolae-package: 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 split-plot
- 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: Student-Newman-Keuls (SNK)
- soil: Data of soil analysis for 13 localities
- sp.plot: Splip-Plot analysis
- ssp.plot: Split-split-Plot 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: Strip-Plot 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 t-values for multiple comparisons
- waller.test: Multiple comparisons, Waller-Duncan
- wilt: Data of Bacterial Wilt (AUDPC) and soil
- yacon: Data Yacon
- zigzag: order plot in serpentine