Graphics: Getting started
graphics library overview
2d plotting
- plot2d
 Plot a curve
Example:

- plot2d2
 Plot a curve as step function
Example:

- plot2d3
 Plot a curve with vertical bars
Example:

- plot2d4
 Plot a curve with arrows
Example:

- champ
 2D vector field
Example:

- fchamp
 Direction field of a 2D first order ODE
Example:

- contour2d
 Level curves of a surface on a 2D plot
- grayplot
 2D plot of a surface using colors
Example:

- fgrayplot
 2D plot of a surface defined by a function using colors
Example:

- Sgrayplot
 Smooth 2D plot of a surface using colors
Example:

- Sfgrayplot
 Smooth 2D plot of a surface defined by a function using colors
Example:

- xgrid
 Add a grid on a 2D plot
Example:

- errbar
 Add vertical error bars on a 2D plot
Example:

- histplot
 Plot a histogram
Example:

- Matplot
 2D plot of a matrix using colors
Example:

3d plotting
- plot3d
 Plot a surface
Example:

- plot3d1
 Plot a surface with gray or color level
Example:

- fplot3d
 Plot a surface defined by a function
Example:

- fplot3d1
 Plot a surface defined by a function with gray or color level
Example:

- param3d
 Plot one curve
Example:

- param3d1
 Plots curves
Example:

- contour
 Level curves on a 3D surface
Example:

- bar3d
 3D representation of a bar diagram
Example:

- genfac3d
 Compute facets of a 3D surface
Example:

- eval3dp
 Compute facets of a 3D surface
Example:

- geom3d
 Projection from 3D on 2D after a 3D plot
Example:

Line and polygon plotting
Rectangle plotting
Arc plotting
Arrow plotting
- xarrows
 Draw a set of arrows
Strings
Coordinates transformations
Colors
Graphics context
Save and load
- xsave
 Save graphics into a file
- xload
 Load a saved graphics
- xs2bmp
 Export graphics using the BMP format
- xs2emf
 Export graphics using the EMF format
Only under Windows.- xs2eps
 Export graphics using the EPS format
- xs2gif
 Export graphics using the GIF format
- xs2jpg
 Export graphics using the JPG format
- xs2pdf
 Export graphics using the PDF format
- xs2png
 Export graphics using the PNG format
- xs2ppm
 Export graphics using the PPM format
- xs2ps
 Export graphics using the PS format
- xs2svg
 Export graphics using the SVG format
Graphics primitives
- clf
 Clear or reset the current graphic figure (window) to default values
- driver
 Select a graphics driver
- xinit
 Initialisation of a graphics driver
- xend
 Close a graphics session
- replot
 Redraw the current graphics window with new boundaries
- show_window
 Raise the current graphics window
- close
 Close some graphic windows
- winsid
 Return the list of graphics windows
Mouse position
Interactive editor
- edit_curv
 Interactive graphics curve editor
Graphics functions for automatic control
- bode
 Bode plot
Example:

- gainplot
 Magnitude plot
Example:

- nyquist
 Nyquist plot
Example:

- hallchart
 Hall chart
Example:

- nicholschart
 Nichols chart
Example:

- black
 Black's diagram
Example:

- evans
 Evans root locus
Example:

- sgrid
 s-plane grid lines
Example:

- plzr
 pole-zero plot
Example:

- zgrid
 zgrid plot
Example:

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