Qu

linspace

Builtin index · Signal processing

result = linspace([a=0], [b=1], [n=50])

Input: a, b, n · Output: result

What it is

a, b (optional numbers): the inclusive endpoints; n (optional number, integer count).

Overloads

One call shape — this function is not overloaded.

CodeInputOutputDescription
result = linspace([a=0], [b=1], [n=50])
a number, optional (default 0)a, b (optional numbers): the inclusive endpoints.
b number, optional (default 1)a, b (optional numbers): the inclusive endpoints.
n number, optional (default 50)n (optional number, integer count).
result vector
Returns a length-n real vector, n linearly spaced points from a to b inclusive — the standard companion for building a time or frequency axis to plot alongside a generated/transformed signal.

Examples

From the documentation, and run by the build -- the output and the figure below are what the engine actually produced. Simplest first.

t = linspace(0, 1, 50)
plot(t, sin(t), label = "sin(x)")
legend top left
output
· plot: figure 5 (50 points)
10−279 10−248 10−217 10−186 10−155 10−124 10−93 10−62 10−31 100 -100 -50 0 50 100 (0, 1.9) 6 dB = 1 bit sin(x) cos(x) sin(x)

from plotting

t = linspace(0, 1, 50)
plot(t, sin(t))
grid off
output
· plot: figure 6 (50 points)
10−279 10−248 10−217 10−186 10−155 10−124 10−93 10−62 10−31 100 -100 -50 0 50 100 (0, 1.9) 6 dB = 1 bit sin(x) cos(x) sin(x)

from plotting

x = linspace(0, 1, 12)
a = randn(3, 4, seed = 6)
b = randn(3, 4, seed = 7)
v = [1, 2, 3, 4, 5, 6]
n = 4
r = 3
c = 4
df = table(price = [10.0, 12.5, 9.75, 14.0], volume = [100, 80, 140, 60])

from core-math

t = linspace(0, 1, 50)
plot(t, sin(t))
grid off
grid()   # no-op -- gridlines stay off, not re-enabled
output
· plot: figure 7 (50 points)
10−279 10−248 10−217 10−186 10−155 10−124 10−93 10−62 10−31 100 -100 -50 0 50 100 (0, 1.9) 6 dB = 1 bit sin(x) cos(x) sin(x)

from plotting