Logarithmically Spaced Points
• logpts(minexp, dec, dnpts)—Returns a vector spanning dec decades of evenly-spaced points, starting at 10 minexp, with dnpts intervals per decade. The number of elements in the resulting vector is dec · dnpts.
The logpts function uses the first value in each decade as the first point, and does not produce the first value of the following decade. So, for example, logpts(-1, 1, 9) generates the sequence of values [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9], and does not include the value 1, which is the start of the next decade.
• logspace(min, max, npts)—Returns a vector of npts logarithmically-spaced points starting at min, ending at max.
Arguments
• minexp is the real exponent corresponding to the power of 10 at which the vector elements generated by logpts begins.
• dec is a positive integer.
• npts, dnpts are positive integers representing the total number of points and the points per decade respectively.
• min, max are positive, real numbers. They must have compatible units.