# h-index calculation

### Description

It calculates the authors' h-index and its variants.

### Usage

1 | ```
Hindex(M, authors, sep = ";")
``` |

### Arguments

`M` |
is a bibliographic data frame obtained by the converting function |

`authors` |
is a character vector. It contains the the authors' names list for which you want to calculate the H-index. The aurgument has the form C("SURNAME1 N","SURNAME2 N",...), in other words, for each author: surname and initials separated by one blank space.
i.e for the auhtors SEMPRONIO TIZIO CAIO and ARIA MASSIMO |

`sep` |
is the field separator character. This character separates auhtors in each string of AU column of the bibiographic data frame. The default is |

### Value

an object of `class`

"list". It contains two elements: H is a data frame with h-index, g-index and m-index for each author; CitationList is a list with the bibliographic collection for each author.

### See Also

`convert2df`

to import and convert an ISI or SCOPUS Export file in a bibliographic data frame.

`biblioAnalysis`

function for bibliometric analysis.

`summary`

to obtain a summary of the results.

`plot`

to draw some useful plots of the results.

### Examples

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | ```
### EXAMPLE 1: ###
data(scientometrics)
authors <- c("SMALL H", "CHEN DZ")
Hindex(scientometrics, authors, sep = ";")$H
### EXAMPLE 2: Garfield h-index###
data(garfield)
indices=Hindex(garfield, authors="GARFIELD E", sep = ";")
# h-index, g-index and m-index of Eugene Garfield
indices$H
# Papers and total citations
indices$CitationList[[1]]
``` |