logSpaced {berryFunctions} R Documentation

## Logarithmically spaced points

### Description

Calculates values that are in logarithmic distance from each other e.g. to produce logarithmic interval borders.
For exact logarithmic spacing, use `10^seq(from=log10(1), to=log10(100), len=100)`

### Usage

```logSpaced(
base = 1.1708,
n = 20,
min = 1,
max = n,
plot = TRUE,
pch = 3,
las = 1,
ylab = "base",
...
)
```

### Arguments

 `base` Base for calculations, can be a vector to compare several bases. DEFAULT: 1.1708 `n` Number of values to be calculated. DEFAULT: 30 `min, max` Range where n values are to be distributed, single values each. DEFAULT: 1,n `plot` Should the points be plotted on a line? DEFAULT: TRUE `pch, las` PointCharacter and Label Axis Style. DEFAULT: 3,1 `ylab` Y axis label. DEFAULT: "base" `...` Further arguments passed to `plot`

### Value

Vector or matrix, depending on base input

### Note

base >1 concentrates points at low values, base<1 at high values. `base` does not relate to `base` in `log`!

### Author(s)

Berry Boessenkool, berry-b@gmx.de, Oct 2014

### See Also

`classify`, `log`, https://stackoverflow.com/a/29963530

### Examples

```
logSpaced()
logSpaced(base=c(1.1, 1.5, 2), n=6, min=5, max=10)
d <- logSpaced(seq(0.8, 1.2, 0.025), main="logarithmically spaced points")

# the default base for the default n (20) will give an approximately equal
# bin width across the range on a logarithmic scale:
d <- logSpaced()
plot(d, rep(1,20), log="x")

# For exactly spacing logarithmically, use
plot(10^seq(from=log10(1), to=log10(100), len=100), log="y")

```

[Package berryFunctions version 1.20.1 Index]