Nyquist plot, with only positive frequencies and 6dB circle around -1 point
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- Files
[[File: nyquist2.zip]
- Description
- Plot Frequency Response Function with
- Correct label sizes
- Optimized for MIMO systems
- Enable use of custom colors (lightgrey, darkgrey, pink, etc.)
- Adjustable linewidth and marker size
- Easy to adjust limits
- Plot only magnitude or phase using the frfmag() and frfphase() functions
Usage: frf(sys1,'color/linetype/linewidth/marker/markersize',sys2,'color/linetype/linewidth/marker/markersize',... ...{fmin,fmax,magmin,magmax,phasemin,phasemax,wraponoff,type})
Inputs: You can use custom colors, e.g. lightgrey, pink, etc. (see line ~315) To use the . marker give \. as marker (to distinguist from dots in linewidth specs) example strings: 'lightgrey--1.5o12' lightgrey dashed line with circle marker of size 12 'orange\.' orange solid line, dot marker 'b*10' blue markers size 10, no line All elements in the options-struct are optional fmin/fmax in Hz magmin/magmax in dB phasemin/phasemax in degrees wraponoff: [ 'on' | 'off' (default) ] type: [ 'mag' | 'phase' | 'magphase' (default) ]
Outputs: Plots the frf in the current figure. Note that the xticklabels might overlap the xlabel in the figure. In an exported pdf file they will be correct.
- Author
- Rob Hoogendijk