Description Usage Arguments Details Value Author(s) Examples

View source: R/ConvertConcentration.R

Change the unit basis for a sample concentration, such as ng/g wet weight to ng/g dry weight, or pg/g lipid weight to pg/g wet weight.

1 | ```
ConvertConcentration(x, convert, percent)
``` |

`x` |
numeric value. The concentration to be converted. |

`convert` |
character string. One of |

`percent` |
numeric value. Either the percent moisture or percent lipid. See details. |

The `convert`

argument specifies the type of conversion,
for example `wet.to.dry`

is wet weight basis to dry weight basis.

Conversion between wet weight basis and dry weight basis requires
`percent`

to equal the percent moisture in the sample. Conversion
between wet weight basis and lipid weight basis requires
`percent`

to equal the percent lipid in the sample. The following
definitions for percent moisture and percent lipid are used.

*percent moisture = ((wet weight - dry weight) / wet weight) * 100*

*percent
lipid = (lipid weight / wet weight) * 100*

The unit prefixes (for example ng/g or pg/g) are not changed by the conversion.

Numeric vector of length 1. The unit prefixes are the same as for
`x`

, only the concentration basis is converted.

Nathan G. Dodder

1 2 3 4 | ```
## Convert a concentration of 15.3 ng/g wet weight,
## 5 percent lipid, to ng/g lipid weight.
ConvertConcentration(15.3, "wet.to.lipid", 5)
``` |

```
[1] 306
```

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