drawaxis

draw an axis

Calling Sequence

drawaxis([options])
// options: x,y,dir,sub_int,fontsize,format_n,seg,textcolor,ticscolor,tics

Arguments

:dir=string used to specify the tics direction. string can be chosen

among ‘u’,’r’,’d’,’l’ and ‘l’ is the default value. the values ‘u’,’r’,’d’,’l’ stands respectively for up, right, down, left

: :tics=string A flag which describes how the tics are given. string

can be chosen among ‘v’,’r’, and ‘i’, and, ‘v’ is the default value

: :x,y two vectors which give tics positions. : :val= string matrix A string matrix, which, when given, gives the

string to be drawn along the axis at tics positions.

: :fontsize=int specifies the fontsize to use for displaying values

along the axis. Default value is -1 which stands for current fontsize

: :format_n=string format to use for displaying numbers along the

axis, where string gives the format according to the C language printf function format syntax (for example string=”%.3f”).

: :seg= 1 or 0 A flag which controls the display of the base segment

of the axis (default value is 1).

: :sub_int=integer an integer which gives the number of sub-intervals

to draw between large tics.

: :textcolor=integer specify the color to use for displaying values

along the axis. Default value is -1 which stands for current color.

: :ticscolor=integer specify the color to use for tics drawing.

Default value is -1 which stands for current color.

:

Description

drawaxis is used to draw an axis in vertical or horizontal direction. the direction of the axis is given by dir dir = ‘u’ or ‘d’ gives a horizontal axis with tics going up ( ‘u’) or down ( ‘d’). dir = ‘r’ or ‘l’ give a vertical axis with tics going right ( ‘r’) or left ( ‘l’).

x and y give the axis tics positions. If the axis is horizontal then y must be a scalar or can be omitted and x is a Scilab vector. The meaning of x is controlled by tics.

If tics=’v’ then x gives the tics positions along the x-axis.

If tics=’r’ then x must be of size 3. x=[xmin,xmax,n] and n gives the number of intervals.

If tics=’i’ then x must be of size 4, x=[k1,k2,a,n]. then xmin=k1*10^a, xmax=k2*10^a and n gives the number of intervals

If y is omitted then the axis will be positioned at the top of the frame if dir=’u’ or at the bottom if dir=’d’

By default, numbers are drawn along the axis. They are drawn using a default format which can be changed with format_n. It is also possible to display given strings and not numbers, this is done if val is provided. The size of val must match the number of tics.

Sample

Examples

`plot2d`_(1:10,1:10,1,"020")
// horizontal axis
drawaxis(x=2:7,y=4,`dir`_='u',tics='v')
// horizontal axis on top of the frame
drawaxis(x=2:7,`dir`_='u',tics='v')
// horizontal axis at the bottom of the frame
drawaxis(x=2:7,`dir`_='d',tics='v')

// horizontal axis given by a range
drawaxis(x=[2,7,3],y=4,`dir`_='d',tics='r')

// vertical axis
drawaxis(x=4,y=2:7,`dir`_='r',tics='v')
drawaxis(x=2,y=[2,7,3],`dir`_='l',tics='r')
drawaxis(y=2:7,`dir`_='r',tics='v')
drawaxis(y=2:7,`dir`_='l',tics='v')

// horizontal axis with strings displayed at tics positions
drawaxis(x=2:7,y=8,`dir`_='u',tics='v',val='A'+`string`_(1:6));
// vertical axis with strings displayed at tics positions
drawaxis(x=8,y=2:7,`dir`_='r',tics='v',val='B'+`string`_(1:6));

// horizontal axis given with a 'i' range.
drawaxis(x=[2,5,0,3],y=9,`dir`_='u',tics='i');
drawaxis(x=9,y=[2,5,0,3],`dir`_='r',tics='i',sub_int=5);

// horizontal axis again
drawaxis(x=2:7,y=4,`dir`_='u',tics='v',fontsize=10,textcolor=9,ticscolor=7,seg=0,sub_int=20)

See Also

• axis_properties description of the axis entity properties