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drawaxis — draw an axis
drawaxis([options]) // options: x,y,dir,sub_int,fontsize,format_n,seg,textcolor,ticscolor,tics
| 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 |
| 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. |
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.
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)
J.Ph.C.
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