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Log-log scale plot

`loglog(`

plots
`X`

,`Y`

)*x*- and *y*-coordinates using a base 10 logarithmic
scale on the *x*-axis and the *y*-axis.

To plot a set of coordinates connected by line segments, specify

`X`

and`Y`

as vectors of the same length.To plot multiple sets of coordinates on the same set of axes, specify at least one of

`X`

or`Y`

as a matrix.

`loglog(`

plots `Y`

)`Y`

against
an implicit set of *x*-coordinates.

If

`Y`

is a vector, the*x*-coordinates range from 1 to`length(Y)`

.If

`Y`

is a matrix, the plot contains one line for each column in`Y`

. The*x*-coordinates range from 1 to the number of rows in`Y`

.

If `Y`

contains complex numbers,
`loglog`

plots the imaginary part of `Y`

versus the
real part of `Y`

. However, if you specify both `X`

and
`Y`

, MATLAB^{®} ignores the imaginary part.

`loglog(___,`

specifies
`Name,Value`

)`Line`

properties using one or more `Name,Value`

pair
arguments. The properties apply to all the plotted lines. Specify the
`Name,Value`

pairs after all the arguments in any of the previous
syntaxes. For a list of properties, see Line Properties.

`loglog(`

displays the plot
in the target axes. Specify the axes as the first argument in any of the previous
syntaxes.`ax`

,___)

`lineobj = loglog(___)`

returns a
`Line`

object or an array of `Line`

objects. Use
`lineobj`

to modify properties of the plot after creating it. For a
list of properties, see Line Properties.

Use

`NaN`

or`Inf`

to create breaks in the lines. For example, this code plots a line with a break between`y=2`

and`y=4`

.loglog([1 2 3 4 5],[1 2 NaN 4 5])

The

`loglog`

function uses colors and line styles based on the`ColorOrder`

and`LineStyleOrder`

properties of the axes.`loglog`

cycles through the colors with the first line style. Then, it cycles through the colors again with each additional line style.You can change the colors and the line styles after plotting by setting the

`ColorOrder`

or`LineStyleOrder`

properties on the axes. You can also call the`colororder`

function to change the color order for all the axes in the figure.

The `loglog`

function plots coordinates on a log scale by setting the
`XScale`

and `YScale`

properties of the axes to
`'log'`

. However, if the axes `hold`

state is `'on'`

before you call
`loglog`

, those properties do not change, and the plot might display on a
linear or semilog scale.