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# control number of points in a multi-decade log plot

## control number of points in a multi-decade log plot

(OP)
Hi all,
anyone knows the best way to control the number of points in a log plot, i want to specify a number of point per decade, normal way generates too many points.
Ty a bunch.

### RE: control number of points in a multi-decade log plot

What does the plot have to do with how many points you specified?

If you need a specific point distribution, create one and stick in a vector and plot against the vector.

TTFN

### RE: control number of points in a multi-decade log plot

I have used the following to generate a vector of currents (i) to plot on the X axis which are evenly spaced on a log plot:

x:=N/log(nmax/nmin)

where N is the number of points desired
nmin is the lowest multiple of a base current
nmax is the highest multiple of a base current

n:=0..N
in:=10·nmin·10^((n-x)/x)

in is a vector of currents in per unit of the base current

If you wanted 3 decades between 0.1 and 100, with 5 points per decade, you would make

nmin:=0.1
nmax:=100
N:=15

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